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OHKOUCHI Naohiko  大河内 直彦

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大河内 直彦  オオコウチ ナオヒコ

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Researcher Number 00281832
Other IDs
Affiliation (Current) 2025: 国立研究開発法人海洋研究開発機構, 海洋機能利用部門, 部門長
Affiliation (based on the past Project Information) *help 2019 – 2024: 国立研究開発法人海洋研究開発機構, 海洋機能利用部門, 部門長
2015 – 2019: 国立研究開発法人海洋研究開発機構, 生物地球化学研究分野, 分野長
2016: 国立研究開発法人海洋研究開発機構, 基幹研究領域生物地球化学研究分野, 分野長/上席研究員
2015: 国立研究開発法人海洋研究開発機能, 生物地球科学研究分野, 分野長
2014: 独立行政法人海洋研究開発機構, 生物地球化学研究分野, プログラムディレクター … More
2014: 独立行政法人海洋研究開発機構, 生物地球化学研究分野, 上席研究員
2014: 独立行政法人海洋研究開発機構, 生物地球化学研究分野, 分野長
2013: 独立行政法人海洋研究開発機構, その他部局等, その他
2009 – 2013: Japan Agency for Marine-Earth Science and Technology, 海洋・極限環境生物圏領域, プログラムディレクター
2008: (独)海洋研究開発機構, 海洋・極限環境生物圏研究領域・海洋環境・生物圏変遷過程研究プログラム物圏研究領域, プログラムディレクター
2008: Japan Agency for Marine-Earth Science and Technology, 地球内部変動研究センター, ダループリーダー
2005 – 2008: 独立行政法人海洋研究開発機構, 地球内部変動研究センター, グループリーダー
2005 – 2007: (独)海洋研究開発機構, 地球内部変動研究センター, グループリーダー
2006: 海洋研究開発機構, 地球内部変動研究センター, グループリーダー
2005: IFREE, Researcher, 第4領域, 研究員
2005: IFREE, 第4領域, 領域長
2004: Japan Agency for Marine-Earth Science and Technology, Group Leader, 地球内部変動研究センター, グループリーダー
2004: 海洋研究開発機構, 地球内部変動研究センター, 研究員
2004: Institute for Frontier Research on Earth Evolution, Researcher, 地球内部変動研究センター, 研究員
2003: IFREE, 第4領域, 研究員
2003: 固体地球統合フロンティア研究システム, 研究員
2003: 海洋科学技術センター, 個体地球統合フロンティア研究システム, 研究員
2002: 固体地球統合フロンティア研究システム, 地球システム変動領域, 研究員
2002: 海洋科学技術センター, 固体地球統合フロンティア研究システム, 研究員
1999: 北大, 低温科学研究所, 助手
1998: 北海道大学, 低温研究所, 助手
1996 – 1998: 北海道大学, 低温科学研究所, 助手 Less
Review Section/Research Field
Principal Investigator
Medium-sized Section 17:Earth and planetary science and related fields / Stratigraphy/Paleontology / Geochemistry/Cosmochemistry / Geochemistry/Astrochemistry / 地球化学
Except Principal Investigator
Stratigraphy/Paleontology / Medium-sized Section 17:Earth and planetary science and related fields / Environmental dynamic analysis / 地球化学 / Stratigraphy/Paleontology … More / Basic Section 03050:Archaeology-related / Basic Section 17030:Human geosciences-related / Geochemistry/Cosmochemistry / Ecology/Environment / Geology / 固体地球物理学 / 広領域 / Evolutionary biology / Aquatic bioproduction science / Geochemistry/Astrochemistry / Science and Engineering / Solid earth and planetary physics / 分離・精製・検出法 Less
Keywords
Principal Investigator
窒素同位体比 / 同位体比 / アミノ酸 / 窒素サイクル / 堆積物 / 放射性炭素年代 / 三畳紀末 / 地球内部 / ポルフィリン / 生物アーカイブ … More / 人新世 / アーカイブ試料 / 琵琶湖 / 富栄養化 / 古海洋 / 生物地球化学 / 窒素 / 放射性炭素 / 物質循環 / 単離・精製 / 南極ロス海 / 脂肪酸 / ロス海 / 水素同位体比 / バイオマーカー / 完新世 / 西南極氷床 / 南極海 / 深海底堆積物 / U^K_<37> / アルケノン / 氷床融解期 / 表層水温 / 高緯度 / 北太平洋 … More
Except Principal Investigator
古気候 / 脂肪酸 / 白亜紀 / 古海洋 / 安定同位体 / アミノ酸 / 黒色頁岩 / 宇宙線生成核種 / Black Shale / Cretaceous / Aerosols / エアロゾル / 温暖化 / 地球温暖化 / 有機物 / PAH / 年代測定 / 南極氷床 / 氷床 / 安定同位体比 / 海洋無酸素事変 / 統合国際深海掘削計画(IODP) / 地下生物圏 / 地球化学 / オゾンホール / アイスコア / 低分子ジカルボン酸 / 光化学反応 / アゼライン酸 / バイオマーカー / 人口変動 / 古代DNA分析 / 同位体比分析 / 動物遺存体 / 遺跡 / 歴史生態学 / 出土動物骨 / マダラ / キタオットセイ / 同位体分析 / DNA分析 / 動物骨 / 海洋生産性 / 北海道 / 加速器質量分析 / 氷期間氷期 / 風化 / 侵食 / ベリリウム / 光学異性体 / 地球外 / 初期太陽系 / 小惑星 / 生命の起源 / 隕石 / リボース / 糖 / 古気候モデル / 古気候モデリング / 第四紀 / 氷期サイクル / Dansgaard-Oschger events / Ice sheet modelling / 大気海洋結合大循環モデル / paleoclimate modelling / 古環境モデル / 環境変動 / ミランコビッチ仮説の検証 / 地球温暖化と古気候のシミュレーション / 海洋深層循環と気候 / 地球軌道要素に対する氷床・海洋・大気の応答 / 気候と氷床と海水準変動 / ヤンガードリアス気候変化 / ダンスガードオシュガーイベント / 氷期―間氷期サイクル / 富士五湖 / 富士山 / 化合物レベル放射性炭素年代法 / 噴火史 / 山中湖 / 湖底堆積物 / 放射性炭素同位体 / 有機化合物 / 放射性炭素年代 / 湖沼堆積物 / 噴火履歴 / 完新世 / 揮発性元素 / 物質循環 / マントル / 炭素 / 氷床モデル / 大気海洋大循環モデル / 海洋大循環 / 大気大循環 / 急激な気候変化 / 気候変化 / 氷期間氷期サイクル / 食物網 / 生物標本 / 生態系 / WESTERN EQUATLRIAL PACIFAC / IMAGES PROJECT / CORALS / ENVIRONMENTS / LOW LATITUTDE / ICE SHEET / HIGH LATITUDE / TROPICAL / 炭素14年 / 表層水 / 低緯度海域 / 暖水塊 / アジアモンスーン / 炭素14年代 / 地球環境 / Stable isotopes / Global warming events / Philippines / Miyazaki Group / Kazusa Group / Glacioeustacy / Methane seep / Chemosynthetic fossil assemblages / 陸棚 / フィリピン / 宮崎層群 / 上総層群 / 氷河性海水準変動 / メタン湧水 / 化学合成化石群集 / Paleoceanography / Ocean Anoxic Event / 黒色頁画 / 古海洋学 / 黒色頁色 / glaciation / glacial sediments / Proterozoic / snowball Earth / 氷河堆積物 / 氷河期 / 氷河性堆積物 / 原生代 / スノーボールアース / climatic change / ice rafted debris / sea-level changes / fatty acid / ice melting water / marine sediments / Antarctic Ice sheet / Antarctic ocean / 有孔虫化石 / 珪藻化石 / 水素同位体比 / 放射性14C年代 / 海洋プランクトン / 南極海海底堆積物コア / 気候変動 / IRD / 海水準変動 / 脂質化合物 / 融氷水 / 海底堆積物 / 南極海 / Geochemical samaples / Preparative GC / Biomakers / Organic carbon age / Chronology / AMS / Radiocarbon / 堆積物 / 地球科学試料 / 加速器質量分析計 / 地球化学試料 / 分取ガスクロマトグラフ / 有機物年代 / 加速器質質量分析計 / 放射性炭素 / Blue Tide / Sulfur Isotope / Carbon Isotope / Cyanobacteria / Anoxic Event / Chalk / チヨーク / 青潮 / 硫黄同位体 / 炭素同位体 / ラン藻類 / 無酸素事件 / チョーク / Troposphere / Seawater / Marine atmosphere / Photochemical reaction / Bromine / Chlorine / Halogen / 対流圏 / 対流圏化学 / 海水 / 海洋大気 / 臭素 / 塩素 / ハロゲン / Tropospheric oxidizing capability / Stratospheric ozone destruction / Dicarboxylic acids / Fatty acids / Antarctic / Greenland / Ice core / 湿暖期 / 陸上植物 / 大気海洋相互作用 / ジカルボン酸 / グリーンランド / 海洋生物 / 脂質 / 微量分析 / 大気環境変化 / 大気輸送 / 炭化水素 / 大気酸化能力 / 成層圏オゾン / 人為起源有機物 / 南極アイスコア / グリーンランドアイスコア / 古環境 / 海水準 / 南極 / ステロール / 細胞膜 / 嫌気 / 原生生物 / 刺胞毒 / 東南アジア / 国際研究者交流 / 海洋生態学 / 国際情報交換(タイ、フィリピン) / 根口クラゲ / 生活史 / 無脊椎動物 / 国際情報交換 / クラゲ漁業 / 吸虫類 / クモヒトデ類 / 稚魚 / 共生 / クラゲ類 / 水産学 / 国際共同研究 / 安定同位体組成 / 物質進化 / 窒素同位体組成 / アミシ酸 / 異性体分子 / 非生物プロセス / 生物プロセス / エナンチオマー / 統合国際深海掘削計画(I0DP) / 海底地震計 / モホール掘削 / 地震発生帯掘削 / Project IBM / 大陸地殻 / 島孤超深度掘削 / モホ面 / 巨大マントルプルーム / 白亜紀温室期 / 大陸地殻形成 / 海洋島弧 / 地震発生帯 / 海洋生態系 / 光従属栄養 / 光合成細菌 / 地球シメテム / 地質学 / 地球システム / 地球史 / 堆積ファブリック解析 / 地球生命科学 / 微生物生態学 / 堆積ファブリック / 野いちご状パイライト / 硫化水素 / 海洋無酸素環境 / カルボン酸 / 不飽和脂肪酸 / 酸化能力 / 古大気 / 大気の酸化能力 / 紫外線照射 / OHラジカル / オゾン / オレイン酸 / 有機炭素 / 植物プランクトン / 安定炭素同位体比 / 安定窒素同位体比 / 原核生物 / 窒素同位体比 / ホパン酸 / ホパノール Less
  • Research Projects

    (36 results)
  • Research Products

    (257 results)
  • Co-Researchers

    (104 People)
  •  ポルフィリン窒素同位体比を用いた地球内部窒素の解析Principal Investigator

    • Principal Investigator
      大河内 直彦
    • Project Period (FY)
      2023 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 17:Earth and planetary science and related fields
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Long-term fluctuation of marine productivity and its impact on humans in Hokkaido

    • Principal Investigator
      高瀬 克範
    • Project Period (FY)
      2021 – 2024
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 03050:Archaeology-related
    • Research Institution
      Hokkaido University
  •  A study on Longterm Environmental changes and Wethering

    • Principal Investigator
      Yokoyama Yusuke
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 17:Earth and planetary science and related fields
    • Research Institution
      The University of Tokyo
  •  Analysis of Anthropocene with biological archives: A case study in Lake BiwaPrincipal Investigator

    • Principal Investigator
      Ohkouchi Naohiko
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 17:Earth and planetary science and related fields
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Reconstruction of eruption history of Mt. Fuji based on compound-specific radiocarbon dating of lake sediment

    • Principal Investigator
      Yamamoto Shinya
    • Project Period (FY)
      2018 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 17030:Human geosciences-related
    • Research Institution
      Mount Fuji Research Institute, Yamanashi Prefectural Government
  •  Presence and chirality of sugars formed in the early solar system: a new origin of biomolecule

    • Principal Investigator
      Furukawa Yoshihiro
    • Project Period (FY)
      2018 – 2020
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 17:Earth and planetary science and related fields
    • Research Institution
      Tohoku University
  •  A study on rapid climate and low latitude atmosphere and ocean coupling.

    • Principal Investigator
      Yokoyama Yusuke
    • Project Period (FY)
      2017 – 2019
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      The University of Tokyo
  •  Understanding the interaction between ice sheets, ocean and atmosphere under large scale climate changes of the past

    • Principal Investigator
      ABE-OUCHI AYAKO
    • Project Period (FY)
      2017 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (S)
    • Research Field
      Environmental dynamic analysis
    • Research Institution
      The University of Tokyo
  •  Deepen the nitrogen cycle in the paleoceanographyPrincipal Investigator

    • Principal Investigator
      OHKOUCHI Naohiko
    • Project Period (FY)
      2016 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Ice sheet fluctuations in the past and global climate changes

    • Principal Investigator
      Yokoyama Yusuke
    • Project Period (FY)
      2014 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      The University of Tokyo
  •  Detection of carbon from deep mantle

    • Principal Investigator
      HANYU Takeshi
    • Project Period (FY)
      2014 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geochemistry/Cosmochemistry
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Development of sediment chronologies with amino acid radiocarbon datingPrincipal Investigator

    • Principal Investigator
      Ohkouchi Naohiko
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geochemistry/Cosmochemistry
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Ecological roles of large-sized jellyfish in symbiosis

    • Principal Investigator
      Ohtsuka Susumu
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Aquatic bioproduction science
    • Research Institution
      Hiroshima University
  •  A search of novel surrogates of sterols in anaerobic eukaryotes

    • Principal Investigator
      TAKISHITA Kiyotaka
    • Project Period (FY)
      2013 – 2014
    • Research Category
      Grant-in-Aid for Challenging Exploratory Research
    • Research Field
      Evolutionary biology
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Development of molecular level isotope techniques to analyze ecosystems

    • Principal Investigator
      Tayasu Ichiro
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Ecology/Environment
    • Research Institution
      Research Institute for Humanity and Nature
      Kyoto University
  •  Understanding the interaction between abrupt climate change and glacial cycle using earth system modeling

    • Principal Investigator
      Abe-Ouchi Ayako
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Environmental dynamic analysis
    • Research Institution
      The University of Tokyo
  •  Investigation of paleo-nitrogen cyclePrincipal Investigator

    • Principal Investigator
      OHKOUCHI Naohiko
    • Project Period (FY)
      2010 – 2012
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geochemistry/Astrochemistry
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Development of enantiomer-specific isotope analysis (ESIA) of amino acids

    • Principal Investigator
      TAKANO Yoshinori
    • Project Period (FY)
      2008 – 2009
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Geochemistry/Astrochemistry
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  海洋表層における光従属栄養プロセスの解析

    • Principal Investigator
      浜崎 恒二
    • Project Period (FY)
      2007 – 2008
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas
    • Review Section
      Science and Engineering
    • Research Institution
      The University of Tokyo
  •  Reconstruction of West Antarctic Ice Sheet during the HolocenePrincipal Investigator

    • Principal Investigator
      OHKOUCHI Naohiko
    • Project Period (FY)
      2007 – 2009
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Promoting research in Integrated Ocean Drilling Program (IODP): towards establishing the international leadership

    • Principal Investigator
      TATSUMI Yoshiyuki
    • Project Period (FY)
      2007 – 2012
    • Research Category
      Grant-in-Aid for Creative Scientific Research
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
  •  Reconstruction and system analyses of the global events of the Earth during the Paleoproterozoic

    • Principal Investigator
      TAJIKA Eiichi
    • Project Period (FY)
      2006 – 2008
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Solid earth and planetary physics
    • Research Institution
      The University of Tokyo
  •  HIGH RESOLUTIONAL RECONSTRUCTION OF TROPICAL ENVIRONMENTS AND EVALUATION OF LINKAGE BETWEEN HIGHLATITUDE ICEASHEETSAND LOALATITUDE ENVIRONMENTS

    • Principal Investigator
      KAWAHATA Hodaka
    • Project Period (FY)
      2005 – 2007
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geology
    • Research Institution
      The University of Tokyo
  •  Shallow water chemosynthetic assemblages occur in response to glacio-eustasy

    • Principal Investigator
      MAJIMA Ryuichi
    • Project Period (FY)
      2004 – 2007
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      Yokohama National University
  •  High resolution analysis of paleoenvironment and material transport during the hot-house Earth system

    • Principal Investigator
      OKADA Hisatake
    • Project Period (FY)
      2003 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      HOKKAIDO UNIVERSITY
  •  The study of impact of Antarctic ice melting event since Last Glacial Maximum for global environmental change

    • Principal Investigator
      MIURA Hideki
    • Project Period (FY)
      2002 – 2004
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      広領域
    • Research Institution
      National institute of Polar Research
  •  Study of snowball Earth events and rise of the atmospheric oxygen based on geologicalg survey of glacial sediments of the Paleoproterozoic

    • Principal Investigator
      TAJIKA Eiichi
    • Project Period (FY)
      2002 – 2004
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      固体地球物理学
    • Research Institution
      The University of Tokyo
  •  硫化水素生物圏の提唱とその実態の解明 -地下生物圏に関する基礎的研究-

    • Principal Investigator
      KITAZATO Hiroshi
    • Project Period (FY)
      2001 – 2002
    • Research Category
      Grant-in-Aid for Exploratory Research
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      Japan Agency for Marine-Earth Science and Technology
      Shizuoka University
  •  北太平洋高緯度域における氷床触解期の海洋表層水温の変動特性の解明Principal Investigator

    • Principal Investigator
      大河内 直彦
    • Project Period (FY)
      1998 – 1999
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      地球化学
    • Research Institution
      Hokkaido University
  •  Studies on chemistry and cycles of halogens in the troposphere

    • Principal Investigator
      KAWAMURA Kimitaka
    • Project Period (FY)
      1998 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas (A)
    • Research Institution
      HOKKAIDO UNIVERSITY
  •  Environmental changes from greenhouse earth to icehouse earth through a study of chalk/black shale sequence

    • Principal Investigator
      TAIRA Asahiko
    • Project Period (FY)
      1998 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research (A).
    • Research Field
      Stratigraphy/Paleontology
    • Research Institution
      The University of Tokyo
  •  AMS radiocarbon measurements of individual organic molecules : making preparative capillary GC system and its application to geochemical samples

    • Principal Investigator
      KAWAMURA Kimitaka
    • Project Period (FY)
      1998 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      地球化学
    • Research Institution
      HOKKAIDO UNIVERSITY
  •  黒色頁岩の形成が地球環境へ及ぼしたインパクトの定量的評価

    • Principal Investigator
      河村 公隆
    • Project Period (FY)
      1997
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas
    • Research Institution
      Hokkaido University
  •  不飽和脂肪酸の光化学的変質に関する実験的研究:古大気の酸化能力推定法の検討

    • Principal Investigator
      河村 公隆
    • Project Period (FY)
      1997 – 1998
    • Research Category
      Grant-in-Aid for Exploratory Research
    • Research Field
      分離・精製・検出法
    • Research Institution
      Hokkaido University
  •  Organic geochemistry of polar ice and snow

    • Principal Investigator
      KAWAMURA Kimitaka
    • Project Period (FY)
      1997 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research (A).
    • Research Field
      地球化学
    • Research Institution
      HOKKAIDO UNIVERSITY
  •  黒色頁岩:その形成メカニズムと物質循環モデルの構築

    • Principal Investigator
      KAWAMURA Kimitaka
    • Project Period (FY)
      1996
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas
    • Research Institution
      Hokkaido University

All 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 Other

All Journal Article Presentation Book

  • [Book] 地球の履歴書2015

    • Author(s)
      大河内直彦
    • Total Pages
      218
    • Publisher
      新潮選書
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Book] Organic nitrogen: Sources, fates, and chemistry. In2014

    • Author(s)
      Ohkouchi, N._and Takano, Y.(分担執筆)(編者 K. H. Freeman and P. Falkowski)
    • Total Pages
      39
    • Publisher
      Elsevier,
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Book] 「地球のからくり」に挑む2012

    • Author(s)
      大河内直彦
    • Total Pages
      237
    • Publisher
      新潮社
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Book] 「地球のからくり」の謎に迫る2012

    • Author(s)
      大河内直彦
    • Total Pages
      237
    • Publisher
      新潮新書
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Book] Earth, Life, and Isotopes(edited by N.Ohkouchi, I. Tayasu, and K. Koba, Enantiomer-specific isotope analysis(ESIA) of D- and L-alanine: nitrogen isotopic hetero- and homogeneity by microbial process and chemical process.)2010

    • Author(s)
      Takano, Y., Chikaraishi, Y., Ohkouchi, N.
    • Publisher
      Kyoto University Press.(in press)
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Book] Earth, Life, and Isotopes2010

    • Author(s)
      Ohkouchi N, Tayasu I, Koba K (eds.)
    • Total Pages
      415
    • Publisher
      Kyoto University Press
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Book] Earth, Life, and Isotopes (edited by N. Ohkouchi, I. Tayasu, and K. Koba, Instrumental optimization for compound-specific nitrogen isotope analysis of amino acids by gas chromatography/combustion/isotope ratio mass spectrometry.)2010

    • Author(s)
      Chikaraishi Y., Takano Y., Ogawa O.N., Ohkouchi, N.
    • Publisher
      Kyoto University Press.(in press)
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Book] チェンジング・ブルー:気候変動の謎に迫る2008

    • Author(s)
      大河内直彦
    • Total Pages
      422
    • Publisher
      岩波書店
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] A new era of isotope ecology: Nitrogen isotope ratio of amino acids as an approach for unraveling modern and ancient food web2023

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Proceedings of the Japan Academy, Series B

      Volume: 99 Issue: 5 Pages: 131-154

    • DOI

      10.2183/pjab.99.009

    • ISSN
      0386-2208, 1349-2896
    • Year and Date
      2023-05-11
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-23H00153
  • [Journal Article] Stable isotopic investigation of the feeding ecology of wild Bornean orangutans.2022

    • Author(s)
      Tsutaya T, Wong A, Malim PT, Bernard H, Ogawa NO, Ohkouchi N, Hongo S, Tajima T, Kanamori T, Kuze N
    • Journal Title

      American Journal of Biological Anthropology

      Volume: 179 Issue: 2 Pages: 276-290

    • DOI

      10.1002/ajpa.24598

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K06100, KAKENHI-PROJECT-23K20512
  • [Journal Article] Origin of Deep Methane from Active Faults along the Itoigawa Shizuoka Tectonic Line between the Eurasian and North American Plates: 13C/12C and 14C/12C Methane Profiles from a Pull-Apart Basin at Lake Suwa2022

    • Author(s)
      Urai Atsushi、Takano Yoshinori、Matsui Yohei、Iwata Hiroki、Miyairi Yosuke、Yokoyama Yusuke、Miyabara Yuichi、Ohkouchi Naohiko、Park Ho-Dong
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 6 Issue: 7 Pages: 1689-1697

    • DOI

      10.1021/acsearthspacechem.1c00392

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-20H02019, KAKENHI-PROJECT-21J00787, KAKENHI-PROJECT-23K21248
  • [Journal Article] Metal contamination in a sediment core from Osaka Bay during the last 400 years2022

    • Author(s)
      Nitzsche Kai Nils、Yoshimura Toshihiro、Ishikawa Naoto F.、Kajita Hiroto、Kawahata Hodaka、Ogawa Nanako O.、Suzuki Katsuhiko、Yokoyama Yusuke、Ohkouchi Naohiko
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 9 Issue: 1 Pages: 58-58

    • DOI

      10.1186/s40645-022-00517-z

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-21H04784, KAKENHI-PROJECT-23K22598
  • [Journal Article] Compound-Specific Nitrogen Isotope Analysis of Amino Acids in Eye Lenses as a New Tool to Reconstruct the Geographic and Trophic Histories of Fish2022

    • Author(s)
      Harada Y, Ito S, Ogawa NO, Yoshikawa C, Ishikawa NF, Yoneda M and Ohkouchi N
    • Journal Title

      Front. Mar. Sci

      Volume: 8:796532 Pages: 796532-796532

    • DOI

      10.3389/fmars.2021.796532

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21K14910, KAKENHI-PROJECT-21H04735, KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-21H04784, KAKENHI-PROJECT-19H04247
  • [Journal Article] Integrative assessment for amino acid nitrogen isotopic composition in biological tissue samples determined by GC/C/IRMS, LC x EA/IRMS, and LC x GC/C/IRMS.2022

    • Author(s)
      Ishikawa, N. F., Ogawa, N. O., Sun, Y., Chikaraishi, Y., Takano, Y., and Ohkouchi, N.
    • Journal Title

      Limnology and Oceanography, Method

      Volume: 20 Issue: 9 Pages: 531-542

    • DOI

      10.1002/lom3.10502

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-20H02019, KAKENHI-PROJECT-22KJ0593, KAKENHI-PROJECT-21H04784
  • [Journal Article] Isotopic insights into the early Medieval (600-1100 CE) diet in the Luistari cemetary at Eura, Finland2022

    • Author(s)
      Etu-Sihvola, H., Salo, K., Naito, Y. I., Kytoekari, M., Ohkouchi, N., Oinonen, M., Heyd, V., and Arppe, L.
    • Journal Title

      Archaeological and Anthropological Sciences

      Volume: 14 Issue: 8

    • DOI

      10.1007/s12520-022-01613-3

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20512
  • [Journal Article] Abyssal fauna, benthic microbes, and organic matter quality across a range of trophic conditions in the western Pacific ocean2021

    • Author(s)
      Nomaki Hidetaka、Rastelli Eugenio、Alves Andreia、Suga Hisami、Ramos Sandra、Kitahashi Tomo、Tsuchiya Masashi、Ogawa Nanako O.、Matsui Yohei、Seike Koji、Miyamoto Norio、Corinaldesi Cinzia、Manea Elisabetta、Ohkouchi Naohiko、Danovaro Roberto、Nunoura Takuro、Amaro Teresa
    • Journal Title

      Progress in Oceanography

      Volume: 195 Pages: 102591-102591

    • DOI

      10.1016/j.pocean.2021.102591

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H04859, KAKENHI-PROJECT-20H00208
  • [Journal Article] Origin of Deep Methane Associated with a Unique Community of Microorganisms in an Organic- and Iodine-Rich Aquifer2021

    • Author(s)
      Urai Atsushi、Takano Yoshinori、Imachi Hiroyuki、Ishii Shun’ichi、Matsui Yohei、Ogawara Miyuki、Tasumi Eiji、Miyairi Yosuke、Ogawa Nanako O.、Yoshimura Toshihiro、Inagaki Fumio、Yokoyama Yusuke、Kawano Kenjiro、Murai Daisuke、Park Ho-Dong、Ohkouchi Naohiko
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 5 Issue: 1 Pages: 1-11

    • DOI

      10.1021/acsearthspacechem.0c00204

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H01005, KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-20H02019
  • [Journal Article] Beryllium isotopes in sediments from Lake Maruwan Oike and Lake Skallen, East Antarctica, reveal substantial glacial discharge during the late Holocene2021

    • Author(s)
      Sproson Adam D.、Takano Yoshinori、Miyairi Yosuke、Aze Takahiro、Matsuzaki Hiroyuki、Ohkouchi Naohiko、Yokoyama Yusuke
    • Journal Title

      Quaternary Science Reviews

      Volume: 256 Pages: 106841-106841

    • DOI

      10.1016/j.quascirev.2021.106841

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18F18791, KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-20H02019
  • [Journal Article] Dating Lake Sediments Using Compound‐Specific 14 C Analysis of C 16 Fatty Acid: A Case Study From the Mount Fuji Volcanic Region, Japan2021

    • Author(s)
      Yamamoto Shinya、Nishizawa Fumikatsu、Yoshimoto Mitsuhiro、Miyairi Yosuke、Yokoyama Yusuke、Suga Hisami、Ohkouchi Naohiko
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 22 Issue: 5 Pages: 1-9

    • DOI

      10.1029/2020gc009544

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03769, KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-21H01581
  • [Journal Article] Influences of ocean currents on the diets of demersal fish communities in the western North Pacific revealed by their muscle carbon and nitrogen isotopic compositions2021

    • Author(s)
      Naoto F Ishikawa, Nanako O Ogawa, Yoshito Chikaraishi, Moto-omi Yamaguchi, Katsunori Fujikura, Yosuke Miyairi, Yusuke Yokoyama, Toshi Nagata, Naohiko Ohkouchi
    • Journal Title

      Frontiers in Marine Science

      Volume: 8 Pages: 465-465

    • DOI

      10.3389/fmars.2021.641282

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H02513, KAKENHI-PROJECT-20H00193, KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-19K22463
  • [Journal Article] Analytical development of seamless procedures on cation-exchange chromatography and ion-pair chromatography with high-precision mass spectrometry for short-chain peptides.2021

    • Author(s)
      Takano, Y., Oba, Y., Furota, S., Naraoka, H., Ogawa, N., Blattmann, T. M. and Ohkouchi, N.
    • Journal Title

      Inter. J. Mass Spectrom.

      Volume: 462 Pages: 116529-116529

    • DOI

      10.1016/j.ijms.2021.116529

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00202, KAKENHI-PROJECT-17H04862, KAKENHI-PROJECT-20H02019, KAKENHI-PROJECT-17H06087, KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-21H04501, KAKENHI-PLANNED-20H05846
  • [Journal Article] Compound-Specific Radiocarbon Analysis of Organic Compounds from Mount Fuji Proximal Lake (Lake Kawaguchi) Sediment, Central Japan2020

    • Author(s)
      Yamamoto Shinya、Miyairi Yosuke、Yokoyama Yusuke、Suga Hisami、Ogawa Nanako O、Ohkouchi Naohiko
    • Journal Title

      Radiocarbon

      Volume: 62 Issue: 2 Pages: 439-451

    • DOI

      10.1017/rdc.2019.158

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03769, KAKENHI-PROJECT-16H01824, KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-17K05676
  • [Journal Article] Timing and pathways of East Antarctic Ice Sheet retreat2020

    • Author(s)
      Prothro Lindsay O.、Majewski Wojciech、Yokoyama Yusuke、Simkins Lauren M.、Anderson John B.、Yamane Masako、Miyairi Yosuke、Ohkouchi Naohiko
    • Journal Title

      Quaternary Science Reviews

      Volume: 230 Pages: 106166-106166

    • DOI

      10.1016/j.quascirev.2020.106166

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-17K05676
  • [Journal Article] A method for stable carbon isotope measurement of underivatized individual amino acids by multi‐dimensional high‐performance liquid chromatography and elemental analyzer/isotope ratio mass spectrometry2020

    • Author(s)
      Sun Yuchen、Ishikawa Naoto F.、Ogawa Nanako O.、Kawahata Hodaka、Takano Yoshinori、Ohkouchi Naohiko
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 34 Issue: 20

    • DOI

      10.1002/rcm.8885

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18H02513, KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-20H02019
  • [Journal Article] Combined use of radiocarbon and stable carbon isotopes for the source mixing model in a stream food web.2020

    • Author(s)
      Ishikawa, N. F., Finlay, J. C., Uno, H., Ogawa, N. O., Ohkouchi, N., Tayasu, I., and Power, M. E.
    • Journal Title

      Limnology and Oceanography Letters

      Volume: 65 Pages: 2688-2696

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Journal Article] Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids2020

    • Author(s)
      Matsubayashi J., Osada Y., Tadokoro K., Abe Y., Yamaguchi A., Shirai K., Honda K., Yoshikawa C., Ogawa N. O., Ohkouchi N., Ishikawa N. F., Nagata T., Miyamoto H., Nishino S., Tayasu I.
    • Journal Title

      Ecology Letters

      Volume: なし Issue: 5 Pages: 881-890

    • DOI

      10.1111/ele.13496

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-15H05822, KAKENHI-PROJECT-16H02524, KAKENHI-PROJECT-17J04991, KAKENHI-PROJECT-19J01087, KAKENHI-PROJECT-20K21343, KAKENHI-PROJECT-18H02513, KAKENHI-PROJECT-19H04247, KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-20H00428, KAKENHI-PROJECT-19K20495
  • [Journal Article] Trophic hierarchy of coastal marine fish communities viewed via compound-specific isotopic analysis of amino acids.2020

    • Author(s)
      Xing, D., Choi, B., Takizawa, Y., Fan, R., Sugaya, S., Tsuchiya, M., Ohkouchi, N., and Chikaraishi, Y.
    • Journal Title

      Marine Ecology Progress Series

      Volume: 652 Pages: 137-142

    • DOI

      10.3354/meps13475

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Journal Article] New insights into isotopic fractionation for central metabolism and biosynthesis in organisms: based on 15N/14N and 13C/12.C of amino acids from four consumer-diet combinations.2020

    • Author(s)
      Takizawa, Y., Takano, Y., Choi, B., Dharampal, P. S., Steffan, S. A., Ogawa, N. O., Ohkouchi, N., Wada, E., and Chikaraishi, Y.
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 7 Issue: 1 Pages: 1-13

    • DOI

      10.1186/s40645-020-00364-w

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208, KAKENHI-PROJECT-20H02019
  • [Journal Article] Extraterrestrial ribose and other sugars in primitive meteorites2019

    • Author(s)
      Furukawa Yoshihiro、Chikaraishi Yoshito、Ohkouchi Naohiko、Ogawa Nanako O.、Glavin Daniel P.、Dworkin Jason P.、Abe Chiaki、Nakamura Tomoki
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 116 Issue: 49 Pages: 24440-24445

    • DOI

      10.1073/pnas.1907169116

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K21888, KAKENHI-PROJECT-18H03728, KAKENHI-PROJECT-18H03729, KAKENHI-PLANNED-17H06459
  • [Journal Article] Nutritional sources of meio- and macrofauna at hydrothermal vents and adjacent areas: natural-abundance radiocarbon and stable isotope analyses2019

    • Author(s)
      Nomaki H、Uejima Y、Ogawa NO、Yamane M、Watanabe HK、Senokuchi R、Bernhard JM、Kitahashi T、Miyairi Y、Yokoyama Y、Ohkouchi N、Shimanaga M
    • Journal Title

      Marine Ecology Progress Series

      Volume: 622 Pages: 49-65

    • DOI

      10.3354/meps13053

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-17K05697
  • [Journal Article] Efficient recycling of nutrients in modern and past hypersaline environments2019

    • Author(s)
      Isaji Y.、Kawahata H.、Ogawa N. O.、Kuroda J.、Yoshimura T.、Jimenez-Espejo F. J.、Makabe A.、Shibuya T.、Lugli S.、Santulli A.、Manzi V.、Roveri M.、Ohkouchi N.
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 3718-3718

    • DOI

      10.1038/s41598-019-40174-9

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PLANNED-17H06455, KAKENHI-PROJECT-15H02142, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-16H04067, KAKENHI-PROJECT-17H04580, KAKENHI-PROJECT-16H05883, KAKENHI-PROJECT-19K04054
  • [Journal Article] Enhancing insights into foraging specialization in the world's largest fish using a multi-tissue, multi-isotope approach2019

    • Author(s)
      Wyatt Alex S.J.、Matsumoto Rui、Chikaraishi Yoshito、Miyairi Yosuke、Yokoyama Yusuke、Sato Keiichi、Ohkouchi Nao、Nagata Toshi
    • Journal Title

      Ecological Monographs

      Volume: 89 Issue: 1

    • DOI

      10.1002/ecm.1339

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Journal Article] Small- to ultra-small-scale radiocarbon measurements using newly installed single-stage AMS at the University of Tokyo2019

    • Author(s)
      Yamane Masako、Yokoyama Yusuke、Hirabayashi Shoko、Miyairi Yosuke、Ohkouchi Naohiko、Aze Takahiro
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

      Volume: 455 Pages: 238-243

    • DOI

      10.1016/j.nimb.2019.01.035

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-17K05676
  • [Journal Article] Improved Method for Isolation and Purification of Underivatized Amino Acids for Radiocarbon Analysis2018

    • Author(s)
      Ishikawa Naoto F.、Itahashi Yu、Blattmann Thomas M.、Takano Yoshinori、Ogawa Nanako O.、Yamane Masako、Yokoyama Yusuke、Nagata Toshi、Yoneda Minoru、Haghipour Negar、Eglinton Timothy I.、Ohkouchi Naohiko
    • Journal Title

      Analytical Chemistry

      Volume: 90 Issue: 20 Pages: 12035-12041

    • DOI

      10.1021/acs.analchem.8b02693

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K12562, KAKENHI-PROJECT-16H01956, KAKENHI-PROJECT-16H03106, KAKENHI-PROJECT-18H00740, KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-18H02513
  • [Journal Article] Changes in detrital input, ventilation and productivity in the central Okhotsk Sea during the marine isotope stage 5e, penultimate interglacial period2018

    • Author(s)
      F. J. Jimenez-Espejo, A. Garcia-Alix, N. Harada, A. Bah, S. Sakai, K. Iijima, Q. Chang, K. Sato, K. Suzuki and N. Ohkouchi
    • Journal Title

      Journal of Asian Earth Sciences

      Volume: 156 Pages: 189-200

    • DOI

      10.1016/j.jseaes.2018.01.032

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H02142, KAKENHI-PROJECT-16K01322, KAKENHI-PLANNED-15H05830, KAKENHI-PROJECT-17H06104, KAKENHI-PROJECT-18H04142
  • [Journal Article] 1.1 billion years old porphyrins and their isotopic composition establish a marine ecosystem dominated by bacterial primary producers.2018

    • Author(s)
      Gueneli, N., McKenna, A. M., Ohkouchi, N., Boreham, C., Beghin, J., Javaux, E. J., and Brocks, J. J.
    • Journal Title

      Proceedings of the National Academy of Science, USA

      Volume: 115 Issue: 30

    • DOI

      10.1073/pnas.1803866115

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Journal Article] Frequent and abrupt cold episodes around 4.2 ka in the Yangtze delta: collapse of the earliest rice cultivating civilization2018

    • Author(s)
      Kajita, H., Kawahata, H., Wang, K., Zheng, H., Yang, S., Ohkouchi, N., Utsunomiya, M., Zhou, B., Zheng, B
    • Journal Title

      Quaternary Science Reviews

      Volume: 201 Pages: 418-428

    • DOI

      10.1016/j.quascirev.2018.10.035

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18J21788, KAKENHI-PROJECT-15H02139, KAKENHI-PROJECT-17H06104
  • [Journal Article] Nitrate isotope distributions in the subarctic and subtropical North Pacific.2018

    • Author(s)
      Yoshikawa, C., Makabe, A., Matsui, Y., Nunoura, T., and Ohkouchi, N.
    • Journal Title

      Geochemistry Geophysics Geosystems

      Volume: 19 Issue: 7 Pages: 2212-2224

    • DOI

      10.1029/2018gc007528

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-15H05471, KAKENHI-PROJECT-17H06104
  • [Journal Article] Fractionation of stable nitrogen isotopes (<sup>15</sup>N/<sup>14</sup>N) during enzymatic deamination of glutamic acid: Implications for mass and energy transfers in the biosphere2018

    • Author(s)
      A.S Goto, M.T. Miura, T. Korenaga, T. Hasegawa, N. Ohkouchi, Y. Chikaraizhi
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 52 Issue: 3 Pages: 273-280

    • DOI

      10.2343/geochemj.2.0513

    • NAID

      130007379059

    • ISSN
      0016-7002, 1880-5973
    • Year and Date
      2018-05-30
    • Language
      English
    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K00519, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-16K13897, KAKENHI-PROJECT-26247086
  • [Journal Article] Orbital-scale environmental and climatic changes recorded in a new 200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula2018

    • Author(s)
      Camuera, J., Jimenez-Moreno, G., Ramos-Roman, M.J., Garcia-Alix, A., Toney, J.L., Anderson, R.S., Jimenez-Espejo, F., Kaufman, D., Bright, J., Webster, C., Yanes, Y., Carrien, J.S., Ohkouchi, N., Suga, H., Yamane, M., Yokoyama, Y., and Martenez-Ruiz, F.
    • Journal Title

      Quaternary Science Reviews

      Volume: 198 Pages: 91-114

    • DOI

      10.1016/j.quascirev.2018.08.014

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15KK0151, KAKENHI-PROJECT-17H06104, KAKENHI-PROJECT-17H01168
  • [Journal Article] Insight into anaerobic methanotrophy from 13C/12C-amino acids and 14C/12C-ANME cells in seafloor microbial ecology2018

    • Author(s)
      Takano Yoshinori、Chikaraishi Yoshito、Imachi Hiroyuki、Miyairi Yosuke、Ogawa Nanako O.、Kaneko Masanori、Yokoyama Yusuke、Kr?ger Martin、Ohkouchi Naohiko
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 14070-14070

    • DOI

      10.1038/s41598-018-31004-5

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H02419, KAKENHI-PROJECT-17H02988, KAKENHI-PROJECT-15H05332, KAKENHI-PROJECT-15KK0151, KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-18H01322
  • [Journal Article] Altervalent substitution of sodium for calcium in biogenic calcite and aragonite.2017

    • Author(s)
      Yoshimura, T., Tamenori, Y., Suzuki, A., Kawahata, H., Iwasaki, N., Hasegawa, H., Nguyen, L. T., Kuroyanagi, A., Yamazaki, T., Kuroda, J., and Ohkouchi, N.
    • Journal Title

      Geochimica et Cosmochimica Acta,

      Volume: 202 Pages: 21-38

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H06104
  • [Journal Article] Nitrogen isotopic fractionation in ammonia during adsorption on silicate surface.2017

    • Author(s)
      Sugahara, H., Takano, Y., Ogawa, N.O., Chikaraishi, Y. and Ohkouchi, N.
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 1 Issue: 1 Pages: 24-29

    • DOI

      10.1021/acsearthspacechem.6b00006

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PLANNED-25108006, KAKENHI-PROJECT-16K13916, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-16H04083
  • [Journal Article] Influence of biological processes on the chemical composition of the brine along increasing salinity in the shallow hypersaline environment of the Trapani (Italy).2017

    • Author(s)
      Isaji, Y., Kawahata, H., Kuroda, J., Yoshimura, T., Ogawa, N. O., Suzuki, A., Shibuya, T., Jimenez-Espero, F. J., Lugli, S., Santulli, A., Manzi, V., Roveri, M., and Ohkouchi, N.
    • Journal Title

      Geochimica et Cosmochimica Acta,

      Volume: 208 Pages: 354-367

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H06104
  • [Journal Article] High-precision simultaneous 18O/16O, 13C/12 C and 17O /16O analyses for ug-quantities of CaCO 3 by tunable infrared laser absorption spectroscopy.2017

    • Author(s)
      Sakai, S., Matsuda, S., Hikita, T., Shimono, A., McManus, J. B., Zahniser, M., Nelson, D., Dettman, D. L., Yang, D., and Ohkouchi, N.
    • Journal Title

      Analytical Chemistry

      Volume: 89 Pages: 11846-11852

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H06104
  • [Journal Article] 化合物レベル放射性炭素年代法.地球化学2017

    • Author(s)
      大河内直彦
    • Journal Title

      地球化学

      Volume: 51 Pages: 135-152

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H06104
  • [Journal Article] Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies2017

    • Author(s)
      Ohkouchi Naohiko、Chikaraishi Yoshito、Close Hilary G.、Fry Brian、Larsen Thomas、Madigan Daniel J.、McCarthy Matthew D.、McMahon Kelton W.、Nagata Toshi、Naito Yuichi I.、Ogawa Nanako O.、Popp Brian N.、Steffan Shawn、Takano Yoshinori、Tayasu Ichiro、Wyatt Alex S.J.、Yamaguchi Yasuhiko T.、Yokoyama Yusuke
    • Journal Title

      Organic Geochemistry

      Volume: 113 Pages: 150-174

    • DOI

      10.1016/j.orggeochem.2017.07.009

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15KK0151, KAKENHI-PLANNED-16H06409, KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-17H05018, KAKENHI-PROJECT-16H04083
  • [Journal Article] Fractionation of nitrogen isotopes during amino acid metabolism in heterotrophic and chemolithoautotrophic microbes across Eukarya, Bacteria, and Archaea: Effects of nitrogen sources and metabolic pathways2017

    • Author(s)
      Yamaguchi Yasuhiko T.、Chikaraishi Yoshito、Takano Yoshinori、Ogawa Nanako O.、Imachi Hiroyuki、Yokoyama Yusuke、Ohkouchi Naohiko
    • Journal Title

      Organic Geochemistry

      Volume: 111 Pages: 101-112

    • DOI

      10.1016/j.orggeochem.2017.04.004

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15KK0151, KAKENHI-PROJECT-15H02419, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-17H01168, KAKENHI-PROJECT-16H04083
  • [Journal Article] Biological and physical modification of carbonate system parameters along the salinity gradient in shallow hypersaline solar salterns in Trapani, Italy2017

    • Author(s)
      Isaji Y., H. Kawahata, J. Kuroda, T. Yoshimura, N. O. Ogawa, A. Suzuki, T. Shibuya, F. J. Jimenez-Espejo, S. Lugli, A. Santulli, V. Manzi, M. Roveri, and N. Ohkouchi
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 印刷中 Pages: 354-367

    • DOI

      10.1016/j.gca.2017.04.013

    • Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16J07844, KAKENHI-PROJECT-16H04067, KAKENHI-PLANNED-17H06455, KAKENHI-PROJECT-15H02142, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-17H04580
  • [Journal Article] Distributions and compound-specific isotopic signatures of sedimentary chlorins reflect the composition of phototrophic communities and carbon and nitrogen sources in Swiss lakes and the Black Sea2016

    • Author(s)
      Naeher S, Suga H, Ogawa NO, Takano Y, Grice K, Ohkouchi N
    • Journal Title

      Chemical Geology

      Volume: 443 Pages: 198-209

    • DOI

      10.1016/j.chemgeo.2016.04.029

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-16H04083
  • [Journal Article] Widespread collapse of the Ross Ice Shelf during the late Holocene.2016

    • Author(s)
      Yokoyama, Y., Anderson, J. B., Yamane, M., Simikins, L. M., Miyairi, Y., Yamazaki, T., Koizumi, M., Suga, H., Kusahara, K., Prothro, L., Hasumi, H., Southon, J. R., and Ohkouchi, N.
    • Journal Title

      Proceedings of National Academy of Science, USA

      Volume: 113 Issue: 9 Pages: 2354-2359

    • DOI

      10.1073/pnas.1516908113

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25247092, KAKENHI-PROJECT-16H02236, KAKENHI-PROJECT-26247080, KAKENHI-PROJECT-26247085, KAKENHI-PROJECT-15KK0151, KAKENHI-PLANNED-15H05825, KAKENHI-PROJECT-15H02131
  • [Journal Article] Terrestrial-;aquatic linkage in stream food webs along a forest chronosequence: multi-isotopic evidence2016

    • Author(s)
      Ishikawa N. F., H. Togashi, Y. Kato, M. Yoshimura, Y. Kohmatsu, C. Yoshimizu, N.O. Ogawa, N. Ohte, N. Tokuchi, N. Ohkouchi, I. Tayasu.
    • Journal Title

      Ecology

      Volume: - Issue: 5 Pages: 1146-1158

    • DOI

      10.1890/15-1133.1

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-25244046, KAKENHI-PROJECT-13J01021, KAKENHI-PROJECT-25660120, KAKENHI-PROJECT-25291101
  • [Journal Article] Compound-specific carbon and nitrogen isotopic compositions of chlorophyll a and its derivatives reveal the eutrophication history of Lake Zurich (Switzerland)2016

    • Author(s)
      Naeher S, Suga H, Ogawa NO, Schubert CJ, Grice K, Ohkouchi N
    • Journal Title

      Chemical Geology

      Volume: 443 Pages: 210-219

    • DOI

      10.1016/j.chemgeo.2016.09.005

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Journal Article] Isolation of underivatized amino acids by ion pair high performance liquid chromatography for high precision measurement of nitrogen isotopic composition of amino acids.2015

    • Author(s)
      Takano, Y., Chikaraishi, Y., and _Ohkouchi, N._
    • Journal Title

      International Journal of Mass Spectrometry

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Chlorophyll a-specific Δ14C, δ13C and δ15N values in stream periphyton: implications for aquatic food web studies.2015

    • Author(s)
      Ishikawa, N.F., Yamane, M., Suga, H., Ogawa, N.O., Yokoyama, Y., and Ohkouchi, N.
    • Journal Title

      Biogeosciences

      Volume: 12 Pages: 6781-6789

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Biochemical and physiological bases for the application of carbon and nitrogen isotopes to the environmental and ecological studies.2015

    • Author(s)
      Ohkouchi, N._, Ogawa, N. O., Chikaraishi, Y., Tanaka, H., and Wada, E.
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 2 Issue: 1

    • DOI

      10.1186/s40645-015-0032-y

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Different response to Indian monsoon between inner and outer region of the Gulf of Aden recorded in the deep-sea sediments2015

    • Author(s)
      Isaji, Y., Kawabata, H., Ohkochi, N., Murayama, M., and Tamaki, K.
    • Journal Title

      Journal of Geophysical Research-Ocean

      Volume: 120 Pages: 7253-7270

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Terrestrial environmental changes around the Gulf of Aden over the last 210 kyr deduced from the sediment n-alkane record: Implications for the dispersal of Homo sapiens2015

    • Author(s)
      Isaji, Y., Kwahata, H., Ohkouchi, N., Murayama, M., and Tamaki, K.
    • Journal Title

      Geophysical Research Letters

      Volume: 42 Pages: 1880-1887

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Sources of dissolved organic carbon in two headwater streams with different bedrock geology: constraints from dual carbon isotopes.2015

    • Author(s)
      Ishikawa, N. F, Tayasu, I., Yamane, M., Miyairi, Y., Yokoyama, Y., and _Ohkouchi, N._
    • Journal Title

      Radiocarbon

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Varying responses to Indian monsoons during the past 220 kyr recorded in deep-sea sediments in inner and outer regions of the Gulf of Aden2015

    • Author(s)
      Isaji, Y., Kawahata, H., Ohkouchi, N., Ogawa, N. O., Murayama, M., Inoue, K., and Tamaki, K.
    • Journal Title

      Journal of Geophysical Research-Ocean

      Volume: 120 Issue: 11 Pages: 7253-7270

    • DOI

      10.1002/2015jc010982

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Sources of dissolved inorganic carbon in two small streams with different bedrock geology: insights from carbon isotopes2015

    • Author(s)
      Ishikawa NF, Tayasu I, Yamane M, Yokoyama Y, Sakai S, Ohkouchi N
    • Journal Title

      Radiocarbon

      Volume: 57 Issue: 3 Pages: 439-448

    • DOI

      10.2458/azu_rc.57.18348

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-13J01021, KAKENHI-PROJECT-25247092, KAKENHI-PROJECT-25291101
  • [Journal Article] Sources of dissolved inorganic carbonin two small streams with different bedrock geology: Insights from carbon isotopes.2015

    • Author(s)
      Ishikawa, N., Tayasu, I., Yamane, M., Yokoyama, Y., Sakai, S., and Ohkouchi, N.
    • Journal Title

      RADIOCARBON

      Volume: 57 Pages: 1-10

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] An approach for measuring the 129I/127I ratio in fish samples.2015

    • Author(s)
      Kusuno, H., Matsuzaki, H., Nagata, T., Miyairi, Y., Yokoyama, Y., Ohkouchi, N., and Tokuyama, H.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research B

      Volume: 361 Pages: 414-418

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Biochemical and physiological bases for the application of carbon and nitrogen isotopes to the environmental and ecological studies.2015

    • Author(s)
      Ohkouchi, N., Ogawa, N. O., Chikaraishi, Y., Tanaka, H., and Wada, E.
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 2 Pages: 1-17

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Terrestrial environmental changes around the Gulf of Aden over the last 210 kyr deduced from the sediment n-alkane record: Implications for the dispersal of Homo sapiens.2015

    • Author(s)
      Isaji, Y., Kawahata, H., Ohkouchi, N., Murayama, M., and Tamaki, K.
    • Journal Title

      Geophysical Research Letters

      Volume: 42 Issue: 6 Pages: 1880-1887

    • DOI

      10.1002/2015gl063196

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Chlorophyll a specific Δ14C, δ13C, and δ15N values in stream periphyton: implications for aquatic food web studies.2015

    • Author(s)
      Ishikawa, N. F., Yamane, M., Suga, H., Ogawa, N. O., Yokoyama, Y., and Ohkouchi, N.
    • Journal Title

      Biogeosciences

      Volume: 12 Issue: 22 Pages: 6781-6789

    • DOI

      10.5194/bg-12-6781-2015

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-25247092, KAKENHI-PROJECT-13J01021
  • [Journal Article] Organic nitrogen: Sources, fates, and chemistry2014

    • Author(s)
      Ohkouchi N and Takano Y
    • Journal Title

      Treatise on Geocheimstry 2nd edition

      Volume: 12 Pages: 251-289

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Compound-specific 14C dating of IODP Expedition 318 core U1357A obtained off the Wilkes Land coast, Antarctica2014

    • Author(s)
      Yamane M, Yokoyama Y, Miyairi Y, Suga H, Matsuzaki H, Dunbar R, Ohkouchi N
    • Journal Title

      Radiocarbon

      Volume: 56 Pages: 1009-1017

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Organic nitrogen: Sources, fates, and chemistry2014

    • Author(s)
      Ohkouchi N, Takano Y
    • Journal Title

      Treatise on Geochemistry vol. 2

      Volume: 2 Pages: 251-289

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Quantitative Compound-specific ^14 C dating of IODP Expedition 318 core U1357A obtained off the Wilkes Land, Antarctica.2014

    • Author(s)
      Yamane, M., Yokoyama, Y., Miyairi, Y., Suga, H., Matsuzaki, H., Dunbar, R., and _Ohkouchi, N._
    • Journal Title

      Radiocarbon

      Volume: 56 Pages: 1009-1017

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Journal Article] Influences of nitrogen substrates and substrate C:N ratios on the nitrogen isotopic composition of amino acids from the marine bacterium Vibrio harveyi2014

    • Author(s)
      Maki K, Ohkouchi N, Chikaraishi Y, Fukuda H, Miyajima T, Nagata T
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 140 Pages: 521-530

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Journal Article] Refinement of reconstructed ancient food webs based on the nitrogen isotopic compositions of amino acids from bone collagen: A case study of archaeological herbivores from Tell Ain el-Kerkh, Syria2014

    • Author(s)
      Yu ITAHASHI, Yoshito CHIKARAISHI, Naohiko OHKOUCHI, Minoru YONEDA
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 48 Issue: 4 Pages: e15-e19

    • DOI

      10.2343/geochemj.2.0318

    • NAID

      130004857873

    • ISSN
      0016-7002, 1880-5973
    • Language
      English
    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-12J06510, KAKENHI-PROJECT-25247092
  • [Journal Article] High-resolution food webs based on nitrogen isotopic composition of amino acids2014

    • Author(s)
      Chikaraishi Y, Steffan SA, Ogawa NO, Ishikawa NF, Sasaki Y, Tsuchiya M, Ohkouchi N
    • Journal Title

      Ecology and Evolution

      Volume: 4 Issue: 12 Pages: 2423-2449

    • DOI

      10.1002/ece3.1103

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-13J01021, KAKENHI-PROJECT-24340131, KAKENHI-PROJECT-25247092
  • [Journal Article] Organic nitrogen: Sources, fates, and chemistry2013

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Treatise in Geochemistry

      Volume: 2nd edition

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Organic nitrogen : Sources, fates and chemistry2013

    • Author(s)
      Ohkouchi N and Takano Y
    • Journal Title

      Treatise in Geochemistry, 2^<nd> ed

      Volume: (in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Lead isotopic record of Barremian -Aptian marine sediments: Implications for large igneous provinces and the Aptian climatic crisis2011

    • Author(s)
      Kuroda, J., Tanimizu, M., Hori, R.S., Suzuki, K., Ogawa, N.O., Tejada, M.L.G., Coffin, M.F., Coccioni, R., Erba, E., and Ohkouchi, N.
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 307 Issue: 1-2 Pages: 126-134

    • DOI

      10.1016/j.epsl.2011.04.021

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211, KAKENHI-PLANNED-20109006, KAKENHI-PROJECT-20340158, KAKENHI-PROJECT-23740387
  • [Journal Article] Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation2011

    • Author(s)
      Sekine, Y., Suzuki, K., Senda, R., Tajika, E., Tada, R., Goto, K., Yamamoto, S., Ohkouchi, N., and Ogawa, N.O
    • Journal Title

      Nature Communications 2

      Volume: 502 Issue: 1 Pages: 502-502

    • DOI

      10.1038/ncomms1507

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19GS0211, KAKENHI-PLANNED-20109006, KAKENHI-PROJECT-20340158, KAKENHI-PROJECT-21241001, KAKENHI-PROJECT-22740352, KAKENHI-PLANNED-23103003, KAKENHI-PROJECT-15KK0180
  • [Journal Article] Direct evidence for the alternation of 13C natural abundances during early diagenesis in Lake Kasumigaura2011

    • Author(s)
      A. Kohzu, A. Imai, N. Ohkouchi, T. Fukushima, K. Kamiya, K. Komatsu, N. Tomioka, N. Kawasaki, S. Miura, and T. Satou
    • Journal Title

      Japan. Geochemistry Geophysics Geosystems

      Volume: 12,10 Issue: 10 Pages: 1-14

    • DOI

      10.1029/2011gc003532

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21241001, KAKENHI-PROJECT-21241008, KAKENHI-PROJECT-22244071
  • [Journal Article] Seasonal variations in the nitrogen isotope composition of Okinotori coral in the tropical Western Pacific : A new proxy for marine nitrate dynamics2011

    • Author(s)
      Yamazaki, A., T.Watanabe, N.Ogawa, N.Ohkouchi, K.Shirai, M.Toratani, M.Uematsu
    • Journal Title

      Journal of Geophysical Research-Biogeosciences

      Volume: 116 Issue: G4

    • DOI

      10.1029/2011jg001697

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-10J02320, KAKENHI-PROJECT-21684031, KAKENHI-PROJECT-22244071
  • [Journal Article] New organic reference materials for carbon- and nitrogen-stable isotope ratio measurements provided by Center for Ecological Research, Kyoto University, and Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology2011

    • Author(s)
      Tayasu I, Hirasawa R, Ogawa NO, Ohkouchi N, Yamada K
    • Journal Title

      Limnology

      Volume: 12 Issue: 3 Pages: 261-266

    • DOI

      10.1007/s10201-011-0345-5

    • NAID

      10030457056

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071, KAKENHI-PROJECT-22370011, KAKENHI-PROJECT-22510006
  • [Journal Article] 白亜紀における大規模火山活動と地球環境変動のリンク2010

    • Author(s)
      黒田潤一郎,鈴木勝彦,大河内直彦
    • Journal Title

      地学雑誌

      Volume: 119 Pages: 534-555

    • NAID

      10030369598

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Marine osmium isotope record across the Triassic-Jurassic boundary from a Pacific pelagic site2010

    • Author(s)
      Kuroda, J., Hori, R. S., Suzuki, K., Grocke, D. R., and Ohkouchi, N
    • Journal Title

      Geology

      Volume: 38 Issue: 12 Pages: 1095-1098

    • DOI

      10.1130/g31223.1

    • NAID

      130004596377

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Developing ultra small-scale radiocarbon sample measurement at University of Tokyo.2010

    • Author(s)
      Yokoyama Y, Koizumi M, Matsuzaki H, Miyairi Y, Ohkouchi N
    • Journal Title

      Radiocarbon.

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Instrument optimization for compound-specific nitrogen isotope analysis of amino acids by gas chmatography/ combustion/ isotope ratio mass spectrometry. in Earth, Life, and Isotopes (Eds. Ohkouchi N, Tayasu I, Koba K)2010

    • Author(s)
      Chikaraishi Y, Takano Y, Ogawa NO, Ohkouchi N
    • Journal Title

      Kyoto University Press

      Pages: 367-386

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Chlorin specific carbon and nitrogen isotopes track aquatic change over the last deglaciation in Lake Suigetsu, Japan2010

    • Author(s)
      Tyler, J., Y.Kashiyama, N.Ohkouchi, N.Ogawa, Y.Yokoyama, Y.Chikaraishi, R.A.Staff, M.Ikehara, C.Bronk Ramsey, C.Bryant, F.Brock, K.Gotanda, T.Haraguchi, H.Yonenobu, T.Nakagawa
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 11 Issue: 9

    • DOI

      10.1029/2010gc003186

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18101001, KAKENHI-PLANNED-21101002, KAKENHI-PROJECT-22244071
  • [Journal Article] Isolation and desaltation with ion-exchange chromatography for compound-specific nitrogen isotope analysis of amino acids2010

    • Author(s)
      Takano Y, Kashiyama Y, Ogawa NO, Chikaraishi Y, Ohkouchi N
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 24 Pages: 2317-2323

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Nitrogen and carbon isotopic compositions of copper, nickel, and vanadyl porphyrins in Cretaceous OAE black shales. in Earth, Life, and Isotopes (Eds. Ohkouchi N, Tayasu I, Koba K)2010

    • Author(s)
      Kashiyama Y, Ogawa NO, Kitazato H, Ohkouchi N
    • Journal Title

      Kyoto University Press

      Pages: 313-335

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Journal Article] Organic analysis of peridotite rocks from Ashadze and Logatchev hydrothermal sites2009

    • Author(s)
      Bassez, M.-P., Takano, Y. and Ohkouchi, N.
    • Journal Title

      International Journal of Molecular Sciences (in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Journal Article] アミノ酸(N-ピバロイル-イソプロピルエステル誘導体)のGC/MSによる解析.2009

    • Author(s)
      力石嘉人, 高野淑識, 大河内直彦
    • Journal Title

      Researches in Organic Geochemistry 25

      Pages: 61-70

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Journal Article] Compound-specific nitrogen isotope analysis of D-alanine, L-alanine, and valine: application of diastereomer separation toδ15N and microbial peptidoglycan studies.2009

    • Author(s)
      Takano, Y., Chikaraishi, Y., Ogawa, O.N., Kitazato, H., Ohkouchi, N.
    • Journal Title

      Analytical Chemistry 81

      Pages: 394-399

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Journal Article] Ontong Java Plateau eruption as a trigger for the early Aptian oceanic anoxic event2009

    • Author(s)
      Tejada, M. L. G., Suzuki, K., Kuroda, J., Coccioni, R., Mahoney, J. J., Ohkouchi, N., Sakamoto, T., and Tatsumi, Y
    • Journal Title

      Geology

      Volume: 37 Issue: 9 Pages: 855-858

    • DOI

      10.1130/g25763a.1

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211, KAKENHI-PROJECT-20340146
  • [Journal Article] Osmium evidence for relationship between atmospheric oxygenation and paleoproterozoic glaciation, Geochimi2009

    • Author(s)
      Sekine, Y., Suzuki, K., Senda, R., Tajika, E., Tada, R., Goto, K., Yamamoto,S., Ohkouchi, N., Ogawa, N.O.
    • Journal Title

      Cosmochim. Acta, Suppl. (in press)

    • Data Source
      KAKENHI-PROJECT-18340128
  • [Journal Article] 化合物レベル放射性炭素年代法の原理と南極縁辺海堆積物への応用2009

    • Author(s)
      大河内直彦
    • Journal Title

      第四紀研究 41

      Pages: 131-142

    • NAID

      10025190510

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] 化合物レベル放射性炭素年代法の原理と南極縁辺海堆積物への応用.2009

    • Author(s)
      大河内直彦
    • Journal Title

      第四紀研究 48

      Pages: 131-142

    • NAID

      10025190510

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Organic analysis of peridotite rocks from Ashadze and Logatchev hydrothermal sites.2009

    • Author(s)
      Bassez, M-P., Takano, Y., Ohkouchi, N.
    • Journal Title

      International Journal of Molecular Sciences 10

      Pages: 2986-2998

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Journal Article] Amino acid trophic level (ATL): elucidation of aquatic food web structure based on compound-specific nitrogen isotopic composition of amino acids.2009

    • Author(s)
      Chikaraishi, Y., Ogawa, O.N., Kashiyama, Y., Takano, Y., Suga, H., Tomitani, A., Miyashita, H., Kitazato, H., Ohkouchi, N.
    • Journal Title

      Limnology and Oceanography: Method 7

      Pages: 740-750

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Journal Article] Ontong Java Plateau eruption as a trigger for the Early Aptian oceanic anoxic event2009

    • Author(s)
      Tejada, M. L. G., Suzuki, K., Kuroda, J., Coccioni, R., Ohkouchi, N., Sakamoto, T., Tatsumi, Y., Mahoney, J. J.
    • Journal Title

      Geology 37

      Pages: 855-858

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Fractionation of hydrogen isotopes during phytol biosynthesis.2009

    • Author(s)
      Chikaraishi Y, Tanaka R, Tanaka A, Ohkouchi N
    • Journal Title

      Organic Geochemistry 40

      Pages: 569-573

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Diastereomerization and cation-exchange for the precise determination of nitrogen isotopic composition of alanine enantiomers2009

    • Author(s)
      Takano, Y., Chikaraishi, Y., Ogawa, N.O., Kitazato, H. and Ohkouchi, N.
    • Journal Title

      Analytical Chemistry 81

      Pages: 394-399

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Journal Article] Carbon isotopic composition of the tetrapyrrole nucleus in chloropigments from a saline me2008

    • Author(s)
      Ohkouchi N.
    • Journal Title

      romictic lake: A mechanistic view for interpreting the isotopic signature of alkyl porphyrins in geological samples Organic Geochemistry 39

      Pages: 521-531

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Microbially induced coated grains in the Late Cretaceous methane-seep deposit at the Nakagawaarea, Hokkaido, northern Japan2008

    • Author(s)
      N. Ohkouchi, S.
    • Journal Title

      Isl. Arc (未定)(in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events: Nitrogen and carbon isotopic evidence from sedimentary porphyrin2008

    • Author(s)
      Kashiyama, Y., Ogawa, N. O., Kuroda, J., Shiro, M., Nomoto, S., Tada, R., Kitazato, H and Ohkouchi, N
    • Journal Title

      Organic Geochemistry

      Volume: 39 Issue: 5 Pages: 532-549

    • DOI

      10.1016/j.orggeochem.2007.11.010

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Evidence for the global distribution of Chlorophyll-d.2008

    • Author(s)
      Kashiyama, Y., Miyashita, H., Ohkubo, S., Ogawa, O.N., Chikaraishi, Y., Takano, Y., Suga, H., Toyohuku, T., Nomaki, H., Kitazato, H., Nagata, T., Ohkouchi, N.
    • Journal Title

      Science 321

      Pages: 658-658

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Journal Article] Compound-specific radiocarbon dating of Ross Sea sediments: A prospect for constructing chronologies in high-latitudinal oceanic sediments.2008

    • Author(s)
      Ohkouchi N, Eglinton TI
    • Journal Title

      Quaternary Geochronology 3

      Pages: 235-243

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Carbon isotopic composition of the tetrapyrrole nucleus in chloropigments from a saline meromictic lake: A mechanistic view for interpreting the isotopic signature of alkyl porphyrins in geological samples2008

    • Author(s)
      Ohkouchi, N.,
    • Journal Title

      Organic Geochem. (未定)(in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Origins of archaeal tetraether lipids in sediments: Insights from radiocarbon analysis.2008

    • Author(s)
      Shah SR, Mollenhauer G, Ohkouchi N, Eglinton TI, Pearson A
    • Journal Title

      Geochimica et Cosmochimica Acta 72

      Pages: 4577-4594

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Compound-specific radiocarbon dating of Ross Sea sediments: A prospect for constructing chronologies in high-latitudinal oceanic sediments2008

    • Author(s)
      Ohkouchi N,
    • Journal Title

      Quat. Geochronol. (未定)(in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Acompound-specific isotope method formeasuring the stable nitrogen isotopiccomposition of tetrapyrroles2008

    • Author(s)
      Chikaraishi, Y., Kashiyama, Y., Ogawa,N. O., Kitazato, H., Satoh, M., Nomoto,S. and Ohkouchi, N.
    • Journal Title

      Organic Geochemistry 39

      Pages: 510-520

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Journal Article] Compound-specific radiocarbon dating of Ross Sea sediments : A prospect for constructing chronologies in high-latitudinal oceanic sediments2008

    • Author(s)
      Ohkouchi, N
    • Journal Title

      Quaternary Geochronology 3

      Pages: 235-243

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Carbon isotopic composition of tetrapyrrole nucleus in chloropigments from a saline meromictic lake : A mechanistic view for interpreting isotopic signature of alkyl porphyrins in geological samples2008

    • Author(s)
      Ohkouchi, N., Nakajima, Y., Ogawa, N.O., Suga, H., Chikaraishi, Y., Sakai, S. and Kitazato, H.
    • Journal Title

      Organic Geochemistry 39

      Pages: 521-531

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Journal Article] Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxicevents: Nitrogen and carbon isotopic evidence from sedimentary porphyrin2008

    • Author(s)
      N. Ohkouchi
    • Journal Title

      Organic Geochem. (未定)(in press)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] 深海底堆積物の解析による最終氷期以降の西南極氷床の消長.2007

    • Author(s)
      能美仁博, 横山祐典, 三浦英樹, 大河内直彦
    • Journal Title

      第四紀研究 46

      Pages: 103-117

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Sources and transformation processes of pheopigments: Carbon and hydrogen isotopic evidence from Lake Haruna, Japan.2007

    • Author(s)
      Chikaraishi Y, Matsumoto K, Kitazato H, Ohkouchi N
    • Journal Title

      Organic Geochemistry 38

      Pages: 985-1001

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Journal Article] Contemporaneous massive subaerial volcanism and Late Cretaceous oceanic anoxic event 22007

    • Author(s)
      N. Ohkouchi
    • Journal Title

      Earth Planet. Sci. Lett. 256

      Pages: 211-223

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Journal Article] Links between Asian Monsoon and North Atlantic climate during the last 23,000 years inferred from concentrations of Lipid biomarker in the Japan Sea sediment core.2006

    • Author(s)
      Yokoyama, Y., Naruse, T., Ogawa, N.O., Tada, R., Kitazato, H., Ohkouchi, N.
    • Journal Title

      Global Planetary Change (印刷中)

    • Data Source
      KAKENHI-PROJECT-17253006
  • [Journal Article] Hydrogen, carbon and nitrogen isotopic fractionations during chlorophyll biosynthesis in C3 higher plants.2005

    • Author(s)
      Chikaraishi, Y., Matsumoto, K., Ogawa, Ohkouchi, N.
    • Journal Title

      Phytochemistry (印刷中)

    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Hydrogen, carbon and nitrogen isotopic fractionations during chlorophyll biosynthesis in C3 higher plants2005

    • Author(s)
      Chikaraishi, Y., Matsumoto, K., Ogawa, N.O., Suga, H., Kitazato, H., Ohkouchi, N.
    • Journal Title

      Phytochemistry (in press)

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Lamina-scale variations in sedimentary components in Cretaceous black shales by chemical compositional mapping : Implications forpaleoenvironmental changes during Oceanic Anoxic Events2005

    • Author(s)
      Kuroda, J., Ohkouchi, N., Ishii, T., Tokuyama, H., Taira, A.
    • Journal Title

      Geochimica et Cosmochimica Acta (in press)

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] 近未来の海面変動:古海洋学から示唆されるもの2005

    • Author(s)
      豊田倫子, 大河内直彦
    • Journal Title

      Ship & Ocean Newsletter 106

      Pages: 4-5

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Copper-chelated bacteriochlorophyll e homologues in the sediments from anoxic Lake Abashiri (Japan).2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Org. Geochem. 36

      Pages: 1576-1580

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Copper-chelated bacteriochlorophyll e homologues in the sediments from anoxic Lake Abashiri (Japan).2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Org.Geochem. 36

      Pages: 1576-1580

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Biogeochemical processes in the meronictic Lake Kaiike : Implications from carbon and nitrogen isotopic compositions2005

    • Author(s)
      Ohkouchi, N., Nakajima, Y., Okada, H., Ogawa, N.O., Suga, H., Oguri
    • Journal Title

      Environmental Microbiology (in press)

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Biogeochemical processes in the saline meromictic Lake Kaiike, Japan - implications from molecular isotopic evidences of photosynthetic pigments.2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Environ.Microbiol 7(7)

      Pages: 1009-1016

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Radiocarbon dating of alkenones from marine sediments - I.Isolation protocol2005

    • Author(s)
      Ohkouchi, N., Xu, L., Reddy, C.M., Montlucon, D., Eglinton, T.I.
    • Journal Title

      Radiocarbon 47

      Pages: 401-412

    • Data Source
      KAKENHI-PROJECT-17253006
  • [Journal Article] Biogeochemical processes in the saline meromictic Lake Kaiike, Japan- implications from molecular isotopic evidences of photosynthetic pigments.2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Environ. Microbiol. 7・7

      Pages: 1009-1016

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Radiocarbon dating of alkenones from marine sediments - I.Isolation protocol.2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Radiocarbon 47

      Pages: 401-412

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Radiocarbon dating of alkenones from marine sediments - I. Isolation protocol.2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Radiocarbon 47

      Pages: 401-412

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] 近未来の海面変動:古海洋学から示唆されるもの2005

    • Author(s)
      豊田倫子, 大河内直彦
    • Journal Title

      Ship & Ocean Newsletter 106

      Pages: 4-5

    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Biogeochemical processes in the saline meromictic Lake Kaiike, Japan - implications from molecular isotopic evidences of photosynthetic pigments.2005

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Environ.Microbiol. 7・7

      Pages: 1009-1016

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Vertical distribution of stable isotopic compositions and bacteriochlorophyll homologues in suspended particulate matter in a saline meromictic Lake Abashiri2004

    • Author(s)
      Nakajima, Y., Shimizu, H., Ogawa, N., Sakamoto, T., Okada, H., Koba, K., Kitazato, H., N.Ohkouchi
    • Journal Title

      Limnology 5

      Pages: 185-189

    • NAID

      10014221136

    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Innovative methods for determining alkenone unsaturation ratios.2003

    • Author(s)
      Johnson, C.G., Frysinger, G.S., Nelson, R.K., Gaines, R.B., Ohkouchi, N.
    • Journal Title

      Marine Chemistry 83

      Pages: 5-22

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Innovative methods for determining alkenone unsaturation ratios.2003

    • Author(s)
      Johnson, C.G, Frysinger, G S., Nelson, R.K., Gaines, R.B., Ohkouchi, N
    • Journal Title

      Marine Chemistry 83

      Pages: 5-22

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Radiocarbon dating of individual fatty acids as a tool for refining Antarctic margin sediment chronologies.2003

    • Author(s)
      Ohkouchi, N.
    • Journal Title

      Radiocarbon 45

      Pages: 17-24

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15253007
  • [Journal Article] Radiocarbon dating of individual fatty acids as a tool for refining Antarctic margin sediment chronologies.2003

    • Author(s)
      Ohkouchi, N., Eglinton, T.I., Hayes, J.M.
    • Journal Title

      Radiocarbon 45

      Pages: 17-24

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Comparison of water column [CO2aq] with sedimentary alkenone-based estimates : A test of the alkenone-CO2 proxy.2002

    • Author(s)
      Pagani, M., Freeman, K., Ohkouchi, N., Caldeira, K.
    • Journal Title

      Paleoceanography

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14390056
  • [Journal Article] Comparisonof water column [CO2aq] with sedimentary alkenone-basedestimates: Atest of the alkenone-CO2 proxy.2002

    • Author(s)
      Pagani, M., Freeman, K., Ohkouchi, N., Caldeira, K.
    • Journal Title

      eanography PA000756

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14390056
  • [Presentation] 細胞の同位体地球化学:恒常性が生み出す自律システムの研究2023

    • Author(s)
      大河内直彦
    • Organizer
      日本地球化学会
    • Invited
    • Data Source
      KAKENHI-PROJECT-23H00153
  • [Presentation] 分子レベル同位体比計測の最先端技術:地球物質循環と生態環境解析のための有機化合物の炭素・窒 素・硫黄同位体比分析法2023

    • Author(s)
      小川奈々子、高野淑識、大河内直彦
    • Organizer
      第71回質量分析総合討論会
    • Invited
    • Data Source
      KAKENHI-PROJECT-23H00153
  • [Presentation] Amino acid nitrogen isotope ratio as a tool for ecological study2022

    • Author(s)
      N. Ohkouchi
    • Organizer
      8th China National Symposium of Stable Isotope Ecology
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] 同位体生態学 ver. 2.1:アミノ酸窒素同位体比,さらにその先へ2022

    • Author(s)
      大河内直彦
    • Organizer
      同位体環境学シンポジウム
    • Invited
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] A novel application of Mg and Li isotopes reveals a link between erosion, chemical weathering, and atmospheric CO2 during the expansion of Antarctica’s ice sheets (ca. 34 Ma)2022

    • Author(s)
      Adam David Sproson, Toshihiro Yoshimura, Takahiro Aze, Shigeyuki Wakaki, Tsuyoshi Ishikawa, Yusuke Yokoyama, Nao Ohkouchi
    • Organizer
      Goldschmidt2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] 断層湖堆積盆から湧出する深部メタンの起源と表層生態系への影響:糸魚川静岡構造線と中央構造線の交点のカーボンサイクル2022

    • Author(s)
      浦井 暖史, 高野 淑識, 松井 洋平, 岩田 拓記, 宮入 陽介, 横山 祐典, 宮原 裕一, 大河内 直彦, 朴 虎東
    • Organizer
      日本地球惑星科学連合2022年大会
    • Invited
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] Radiocarbon geochemistry of amino acids in marine sediments2022

    • Author(s)
      Blattmann T, Ishikawa N, Keil R, Yokoyama Y, Ogawa N, Haghipour N, Sun Y, Neibauer J, Duffy M, Suga H, Miyairi Y, Eglinton T, Takano Y, Ohkouchi N
    • Organizer
      24th Radiocarbon
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] Can Mg and Li isotopes in the authigenic and detrital fractions of sediments be used to trace paleoweathering Case study: The EOT2022

    • Author(s)
      Adam David Sproson, Toshihiro Yoshimura, Takahiro AZE, Shigeyuki Wakaki, Tsuyoshi Ishikawa, Yusuke Yokoyama, Naohiko Ohkouchi
    • Organizer
      日本地球惑星科学連合2022年大会
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] Antarctic slope current intensification following Last Glacial Maximum ice retreat2022

    • Author(s)
      Bethany C. Behrens, Yusuke Yokoyama, Yosuke Miyairi, Alexandra L Post, Leanne K Armand, Stephen P Obrochta, Naohiko Ohkouchi, Hisami Suga, Takato Takemura, Philip E O'Brien
    • Organizer
      日本地球惑星科学連合2022年大会
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] Development and applications of a liquid chromatography method for the compound- and enantiomer-specific stable carbon isotope analysis of amino acids in environmental samples2022

    • Author(s)
      Y. Sun, N. F. Ishikawa, N. O.O gawa, Y.Takano, N. Ohkouchi
    • Organizer
      Ocean Sciences Meeting 2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] Microbial Reworking of Organic Matter in Marine Sediments Revealed by Carbon Isotopic Compositions of Individual Amino Acids2022

    • Author(s)
      Y. Sun, N. F. Ishikawa, N. O. Ogawa, J. Kuroda, Y.Takano, N. Ohkouchi
    • Organizer
      日本地球化学会 2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] The Mg and Li isotopic compositions of authigenic and detrital sedimentary phases record Antarctic chemical silicate weathering across the EOT2021

    • Author(s)
      Adam David Sproson, Toshihiro Yoshimura, Takahiro Aze, Shigeyuki Wakaki, Tsuyoshi Ishikawa, Yusuke Yokoyama, Nao Ohkouchi
    • Organizer
      Goldschmidt2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] 同位体で解く生態系2021

    • Author(s)
      大河内直彦
    • Organizer
      西アジア考古学会
    • Invited
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] Development and applications of a liquid chromatography method for the compound- and enantiomer-specific stable carbon isotope analysis of amino acids in environmental samples2021

    • Author(s)
      Yuchen Sun, Naoto F. Ishikawa, Thomas M. Blattmann, Nanako O. Ogawa, Hodaka Kawahata, Yoshinori Takano, Naohiko Ohkouchi
    • Organizer
      Ocean Science Meeting 2021
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] 水晶体の同位体分析による魚類の回遊経路復元手法の開発2021

    • Author(s)
      原田洋太,伊藤進一,小川奈々子,吉川千里,石川尚人,大河内直彦
    • Organizer
      JpGU 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] Nitrogen isotope mapping in the North Pacific using a marine nitrogen isotope model2021

    • Author(s)
      Chisato Yoshikawa, Masahito Shigemitsu, Akitomo Yamamoto, Akira Oka, Naohiko Ohkouchi
    • Organizer
      JpGU 2021
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] 富士五湖の湖底堆積物を用いた富士山の噴火履歴の高精度化2021

    • Author(s)
      山本真也, 西澤文勝, 吉本充宏, 太田耕輔, 宮入陽介, 横山祐典, 菅寿美, 大河内直彦
    • Organizer
      日本地質学会第128年学術大会
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] Authigenic and detrital Mg and Li isotopes as a tracer of Antarctic chemical silicate weathering across the EOT2021

    • Author(s)
      Adam David Sproson, Toshihiro Yoshimura, Yusuke Yokoyama, Takahiro AZE, Tsuyoshi Ishikawa, Shigeyuki Wakaki, Naohiko Ohkouchi,
    • Organizer
      日本地球惑星科学連合2021年大会
    • Data Source
      KAKENHI-PROJECT-20H00193
  • [Presentation] High-precision compound-specific carbon isotopic analysis of underivatized amino acids using a multidimensional-HPLC and nano-EA/IRMS2020

    • Author(s)
      Yuchen Sun, Naoto F. Ishikawa, Nanako O.Ogawa, Hodaka Kawahata, Yoshinori Takano, Naohiko Ohkouchi
    • Organizer
      Eauropean Geoscience Union 2020
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H00208
  • [Presentation] Compound-specific 14C analyses of fatty acids as potential dating tools for lake sediments: A case study from Lake Kawaguchi, central Japan2020

    • Author(s)
      Yamamoto, S., Nishizawa, F., Yoshimoto, M., Miyairi, Y., Yokoyama, Y., Suga, H., Ohkouchi, N.
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] 化合物レベル14C年代法による富士山北麓・河口湖堆積物コア中の火山噴出物の年代推定2019

    • Author(s)
      山本真也・西澤文勝・吉本充宏・宮入陽介・横山祐典・菅寿美・大河内直彦
    • Organizer
      日本地球化学会2019年年会
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] Deep Methagenesis and Iodine-Rich Aquifer: Insight from Organic Geochemical Approach2019

    • Author(s)
      A Urai, Y Takano, H Imachi, S Ishii, Y Matsui, M Ogawara, Y Miyairi, NO Ogawa, T Yoshimura, F Inagaki, Y Yokoyama, HD Park, D Murai, K Kawano, N Ohkouchi
    • Organizer
      29th International Meeting on Organic Geochemistry
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] Compound-specific radiocarbon analysis of lipid biomarkers in surface sediment from Lake Kawaguchi, central Japan2019

    • Author(s)
      山本 真也, 宮入 陽介, 横山 祐典, 菅 寿美, 小川 奈々子, 大河内 直彦
    • Organizer
      2019年度地球惑星連合大会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] Compound-specific radiocarbon analysis of lipid biomarkers in surface sediment from Lake Kawaguchi, central Japan2019

    • Author(s)
      Shinya Yamamoto, Yosuke Miyairi, Yusuke Yokoyama, Hisami Suga, Nanako Ogawa Naohiko Ohkouchi
    • Organizer
      日本地球惑星科学連合2019年大会
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] 河口湖堆積物コア中の直鎖脂肪酸の化合物レベル放射性炭素年代2019

    • Author(s)
      山本真也・西澤文勝・吉本充宏・宮入陽介・横山祐典・菅寿美・大河内直彦
    • Organizer
      日本有機地球化学2019金沢シンポジウム
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] 表層水圏と深部地下圏のメタンサイクル:有機地球化学的・微生物生態学的手法による断層湖の研究(予察)2019

    • Author(s)
      浦井 暖史, 高野 淑識, 松下 慎, 井町 寛之, 松井 洋平, 宮入 陽介, 岩田 拓記, 朴 虎東, 横山 祐典, 大河内 直彦
    • Organizer
      2019年度日本地球化学会年会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] 半化石骨安定同位体分析による後期完新世マダガスカルにおける絶滅大型動物の古生態・古気候復元2019

    • Author(s)
      畑中 美沙希, 横山 祐典, Geoffrey Clark, 宮島 利宏, 小川 奈々子, 宮入 陽介, 大河内 直彦
    • Organizer
      2019年度日本地球化学会年会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] 化合物レベル14C年代法による富士山北麓・河口湖堆積物コア中の火山噴出物の年代推定2019

    • Author(s)
      山本 真也, 西澤 文勝, 吉本 充宏, 宮入 陽介, 横山 祐典, 菅 寿美, 大河内 直彦
    • Organizer
      2019年度日本地球化学会年会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] 河口湖表層堆積物中の直鎖脂肪酸の化合物レベル放射性炭素年代2018

    • Author(s)
      山本真也・宮入陽介・横山祐典・ 菅寿美・大河内直彦
    • Organizer
      日本有機地球化学2018品川シンポジウム
    • Data Source
      KAKENHI-PROJECT-18K03769
  • [Presentation] Duration of the maximum extent of the East Antarctic Ice Sheet grounding line in the Ross Sea, Antarctica, and subsequent complex retreat2018

    • Author(s)
      Lindsay O Prothro, Wojcieh Majeski, Yusuke Yokoyama, Laure Mille Simkins, John B Andeson, Masako Yamane and Naohiko Ohkouchi
    • Organizer
      2018 American Geophysical Union Fall Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] 骨コラーゲンの同位体分析によるマダガスカル絶滅種の食性解析2017

    • Author(s)
      畑中美沙希,横山 祐典,小川奈々子,宮入陽介,Geoffrey Clark,大河内直彦,
    • Organizer
      日本第四紀学会2017年大会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] Heinrich events and sea level changes: records from uplifted coral terraces and marginal seas2017

    • Author(s)
      Yokoyama,Y.Esat,T..Suga,H.Obrochta,S.and Ohkouchi,N.
    • Organizer
      2017 American Geophysical Union Fall Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] Marine evidence of a deconvolving Antarctic Ice Sheet during post-LGM retreat of the Ross Sea sector2017

    • Author(s)
      Pronthro,L..Yokoyama,Y.Simkins,L..Anderson,J..Majewski,W.Yamane,M.and Ohkouchi
    • Organizer
      2017 American Geophysical Union Fall Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] Radiocarbon measurements for marine fish to understand their ecology2017

    • Author(s)
      Miyairi,Y.Yokoyama,Y.Ohkouchi,N.Ogawa,N.Matsuzaki,H.Kusuno,H.and Nagata,T.
    • Organizer
      2017 14th International Conference on Accelerator Mass Spectrometry
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] ポルフィリン窒素同位体比から明らかにする地中海塩分危機時の窒素循環2017

    • Author(s)
      伊左治 雄太、川幡 穂高、高野 淑識、小川 奈々子、黒田 潤一郎、吉村 寿紘、Francisco J. Jimenez-Espejo, Stefono Lugli, Vinicio Manzi, Marco Roveri, 大河内 直彦
    • Organizer
      第35回有機地球化学シンポジウム
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Presentation] Multi-element, compound-specific isotope analysis of chloropigments: Insights into the biogeochemical cycle of the microbial mat in the shallow hypersaline environment2017

    • Author(s)
      Isaji, Y., Kawahata, H., Kuroda, J., Yoshimura, T., Ogawa, N.O., Araoka, D., Makabe, A., Suzuki, A., Shibuya, T., Jimenez-Espejo, F.J., Takano, Y., Lugli, S., Santulli, A., Manzi, V., Roveri, M., Ohkouchi, N
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Presentation] 骨コラーゲンの同位体分析によるマダガスカル絶滅種の食性解析2017

    • Author(s)
      畑中 美沙希,横山 祐典,小川 奈々子,宮入 陽介,Geoffrey Clark,大河内 直彦,
    • Organizer
      2017年度地球惑星科学連合大会
    • Data Source
      KAKENHI-PROJECT-17H01168
  • [Presentation] 有機物の同位体組成:最近の展開2016

    • Author(s)
      大河内直彦
    • Organizer
      第64回質量分析総合討論会
    • Place of Presentation
      ホテル阪急エキスポパーク(大阪府吹田市)
    • Year and Date
      2016-05-19
    • Invited
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Presentation] Meteoric 10Be and Compound Specifc 14C Revealed Timing of Colossal Antarctic Ice-Shelf Collapse2016

    • Author(s)
      Yokoyama, Y., Anderson, J.B., Yamane, M., Simkins, L., Miyairi, Y., Yamazaki, T., Koizuki, M., Suga, H., Kusahara, K., Protiro, L., Hasumi, H., Southon, J.R., and Ohkouchi, N.
    • Organizer
      Goldschmidt Conference 2016
    • Place of Presentation
      パシフィコ横浜、神奈川県横浜市
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Widening the Application of Compound-Specific Isotope Analysis to Less Volatile Molecules2016

    • Author(s)
      N. OHKOUCHI
    • Organizer
      Goldschmidt Conference 2016
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2016-06-29
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Presentation] Widening the application of compound-specific isotope analysis to less volatile molecules2016

    • Author(s)
      Ohkouchi, N.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Pacifico Yokohama, Yokohama, Kanagawa
    • Year and Date
      2016-06-29
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] 炭素窒素安定同位体,放射性炭素同位体から明らかにした熱水噴出域のメイオファウナの食性と熱水域での分布パターンとの関連2016

    • Author(s)
      野牧 秀隆, 上島 優貴, 小川 奈々子, ,山根 雅子, 渡部 裕美, 瀬之口 れいな, 北橋 倫, 横 山 祐典, 大河内 直彦, 嶋永 元裕
    • Organizer
      2016年度地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ、千葉県千葉市
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Widespread collapse of the Ross Ice Shelf during the late Holocene reconstructed from compound specific C-14 and meteoric Be-102016

    • Author(s)
      Yokoyama, Y., Anderson, J.B., Yamane, M., Simkins, L.M., Miyairi, Y., Yamazaki, T., Koizumi, M., Kusahara, K., Suga, H., Protiro, L.O., Hasumi, H., Southon, J.R., Ohkouchi, N.
    • Organizer
      American Geophysical Union Fall Meeting 2016
    • Place of Presentation
      Moscone Convention Center, SanFrancisco, USA
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Isolation and Purification of Individual Amino Acids by HPLC for Precise Small-Scale Radiocarbon Dating of Archaeological Bones2016

    • Author(s)
      Itahashi, Y., Takano, Y., Chikaraishi, Y., Ogawa, N., Ohkouchi, N., Yamane, M., Yokoyama, Y., Nagata, T., and Yoneda, M.
    • Organizer
      Goldschmidt Conference 2016
    • Place of Presentation
      パシフィコ横浜、神奈川県横浜市
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Tracing the Iodine Source of Marine Biota Using Iodine 129 Isotopic Ratio2016

    • Author(s)
      Kusuno, H., Matsuzaki, H., Nagata, T., Miyairi, Y., Yokoyama, Y., Ohkouchi, N., Tanaka, E., Kawamoto, M., and Tokuyama, H.
    • Organizer
      Goldschmidt Conference 2016
    • Place of Presentation
      パシフィコ横浜、神奈川県横浜市
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Nutrition sources of deep-sea meiofauna at hydrothermal vent and adjacement non-vent areas revealed by stable carbon and nitrogen isotope ratios and natural radiocarbon abundances2016

    • Author(s)
      Nomaki, H., Uejima, Y., Ogawa, N.O., Yamane, M., Watanabe, H.K., Senokuchi, R., Kitahashi, T., Yokoyama, Y., Ohkouchi, N., and Shimanaga, M.
    • Organizer
      IsoEcol 2016
    • Place of Presentation
      伊藤謝恩ホール、東京都文京区
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] 特定有機化合物C-14と大気生成Be-10により明らかになった過去の世界最大のロス海棚氷崩壊イ ベント2016

    • Author(s)
      横山祐典、Anderson, J.B., 宮入陽介、山根雅子、菅寿美、Simkins, L., 大河内直彦
    • Organizer
      2016年度日本地球化学会 第63回年会
    • Place of Presentation
      大阪市立大学、大阪府大阪市
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Radiocarbon measurements for marine fish to understand their ecology2016

    • Author(s)
      Miyairi, Y., Yokoyama, Y., Ohkouchi, N., Ogawa, N., Matsuzaki, H., Kusuno, H., and Nagata, T.
    • Organizer
      IsoEcol 2016
    • Place of Presentation
      伊藤謝恩ホール、東京都文京区
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Preliminary Results of Radiocarbon Dating of Amino Acids: A Novel Tool for Biogeochemistry and Chronology2016

    • Author(s)
      Yamane, M., Yokoyama, Y., Miyairi, Y., Suga, H., Matsuzaki, H., Dunbar, R., and Ohkouchi, N.
    • Organizer
      Goldschmidt Conference 2016
    • Place of Presentation
      パシフィコ横浜、神奈川県横浜市
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] 最終氷期以降における西南極氷床の融解史:批判的レビュー2016

    • Author(s)
      大河内直彦
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ(千葉県千葉市)
    • Year and Date
      2016-05-24
    • Invited
    • Data Source
      KAKENHI-PROJECT-16H02236
  • [Presentation] 極微量長半減期同位体を用いた海洋生態系・物質動態解明2015

    • Author(s)
      横山 祐典,宮入 陽介,大河内 直彦,小川 奈々子,松崎 浩之,楠野 葉瑠香,永田 俊
    • Organizer
      2015年度 地球惑星科学連合大会
    • Place of Presentation
      日本 千葉 幕張メッセ
    • Year and Date
      2015-05-24
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] Terrestrial-aquatic linkage on stream food webs along a forest chronosequence: multi-isotopic evidence2015

    • Author(s)
      Ishikawa, N.F., Togashi, H., Kato, Y., Yoshimura, M., Kohmatsu, Y., Yoshimizu, C., Ogawa, N.O., Ohkouchi, N., Ohte, N., Tokuchi, N. and Tayasu, I.
    • Organizer
      第62回日本生態学会鹿児島大会
    • Place of Presentation
      鹿児島大学,鹿児島
    • Year and Date
      2015-03-19
    • Data Source
      KAKENHI-PROJECT-25291101
  • [Presentation] Organic Molecules as tools for Quaternary paleoclimatology2015

    • Author(s)
      Ohkouchi, N.
    • Organizer
      XIX INQUA Congress
    • Place of Presentation
      The Nagoya Congress Center, Nagoya, Aichi
    • Year and Date
      2015-07-27
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] Compound-specific radiocarbon analysis (CSRA) as a chronological tool for Antarctic margin sediments : An update2015

    • Author(s)
      Ohkouchi, Y Yokoyama, M Yamane, H Suga, T Nagata, TI Eglinton
    • Organizer
      NIPR Symposium
    • Place of Presentation
      National Institute of Polar Research, Tachikawa, Tokyo
    • Year and Date
      2015-11-17
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] 炭素安定同位体比と放射性炭素天然存在比を用いた河川溶存無機炭素の起源推定2015

    • Author(s)
      石川尚人,陀安一郎,山根雅子,坂井三郎,大河内直彦
    • Organizer
      日本陸水学会第80回大会
    • Place of Presentation
      北海道大学函館キャンパス,函館
    • Year and Date
      2015-09-28
    • Data Source
      KAKENHI-PROJECT-25291101
  • [Presentation] Compound-specific 14C dating of IODP Expedition 318 core U1357A obtained off the Wilkes Land coast, Antarctica.2015

    • Author(s)
      Masako Yamane, Yusuke Yokoyama, Yosuke Miyairi, Hisami Suga, Hiroyuki Matsuzaki, Robert B Dunbar, Naohiko Ohkouchi.
    • Organizer
      THE INTERNATIONAL UNION FOR QUATERNARY RESEARCH:INQUA XIX CONGRESS
    • Place of Presentation
      日本 名古屋 国際会議場
    • Year and Date
      2015-07-26
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] 「軽い」アミノ酸と地球化学の接点2014

    • Author(s)
      高野淑識・力石嘉人・大河内直彦
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2014-05-02
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] アミノ酸の安定同位体比を正確かつ感度良く測定するための分析法2014

    • Author(s)
      力石嘉人,高野淑識,大河内直彦
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2014-05-02
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] 有機物から最大限の情報を引き出すために2014

    • Author(s)
      大河内直彦,力石嘉人,高野淑識,小川奈々子
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2014-05-02
    • Invited
    • Data Source
      KAKENHI-PROJECT-25247092
  • [Presentation] Use of radiocarbon natural abundances and compound-specific isotope analyses for stream food web research2014

    • Author(s)
      Naoto F. Ishikawa, Masako Yamane, Yosuke Miyairi, Yusuke Yokoyama, Ichiro Tayasu, Naohiko Ohkouchi
    • Organizer
      Radiocarbon Conference
    • Place of Presentation
      Belfast, UK
    • Year and Date
      2014-08-21
    • Data Source
      KAKENHI-PROJECT-25291101
  • [Presentation] シングルステージ加速器質量分析装置(AMS)を用いた微量放射性炭素分析による古気候研究,2014

    • Author(s)
      横山祐典, 宮入陽介, 山根雅子, 平林頌子, 石輪健樹, 沢田近子, 阿瀬貴博, 大河内直彦
    • Organizer
      2014年度日本地球化学会年会
    • Place of Presentation
      富山大学 富山県
    • Year and Date
      2014-09-18
    • Data Source
      KAKENHI-PROJECT-26247085
  • [Presentation] A novel approach for studying marine nutrient cycling : application in the Adélie Basin (East Antarctica) for the last 2,000 years BP2013

    • Author(s)
      Etourneau J, Ogawa NO, Suga H, Campagne P, Djouraev I, Bouloubassi I, Massé G, Crosta X, Ohkouchi N
    • Organizer
      International Conference on Paleoceanography
    • Place of Presentation
      Barcelona-Sitges, Spain
    • Year and Date
      2013-09-01
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] Plio-Pleistocene evolution of nutrient cycling in the Benguela upwelling system : a chlorin-specificδ^<15>N approach2013

    • Author(s)
      Leduc G, Suga H, Ogawa N, Etourneau J, Schneider R, Ohkouchi N
    • Organizer
      International Conference on Paleoceanography
    • Place of Presentation
      Barcelona-Sitges, Spain
    • Year and Date
      2013-09-01
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] Interspecific relationships among jellyfish, trematodes and fish juveniles in the Seto Inland Sea, Japan2013

    • Author(s)
      Yusuke Kondo, Takeshi Hirabayashi, Shoma Okada, Susumu Ohtsuka, Nanako O. Ogawa, Naohiko Ohkouchi, Takeshi Shimazu
    • Organizer
      Fourth International Jellyfish Bloom Symposium
    • Place of Presentation
      広島市
    • Data Source
      KAKENHI-PROJECT-25304031
  • [Presentation] Symbiotic relationships among jellyfish, fish and invertebrates in Asian waters2013

    • Author(s)
      Susumu Ohtsuka, Yusuke Kondo, Jun Nishikawa, Nanako Ogawa, Naohiko Ohkouchi, Khwanruan Srinui, Ho Young Soh, B. A. Venmathi Maran, Shuhei Nishida
    • Organizer
      Fourth International Jellyfish Bloom Symposium
    • Place of Presentation
      広島市
    • Data Source
      KAKENHI-PROJECT-25304031
  • [Presentation] Fate of atmospheric nitrate and nitrogen biogeochemical processes in Lake Biwa elucidated by multiple oxygen isotopes2012

    • Author(s)
      Makabe A, Koba K, Yoshimizu C, Tayasu I, Ogawa NO, Ohkouchi N, Toyoda S, Yoshida N, Nagata T
    • Organizer
      ASLO
    • Place of Presentation
      滋賀県, 滋賀県立びわ湖ホール
    • Year and Date
      2012-07-10
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] クロロフィルとポルフィリン2012

    • Author(s)
      大河内直彦
    • Organizer
      日本地球化学会
    • Place of Presentation
      九州大学,福岡県
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] What nitrogenous geomolecules tell about Earth's history?2012

    • Author(s)
      Ohkouchi, N.
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ,千葉県
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] What nitrogenous geomolecules tell about Earth's history?2012

    • Author(s)
      Ohkouchi N
    • Organizer
      地球惑星連合大会
    • Place of Presentation
      千葉県,幕張メッセ国際会議場
    • Year and Date
      2012-05-24
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] クロロフィルとポルフィリン2012

    • Author(s)
      大河内直彦
    • Organizer
      日本地球化学会
    • Place of Presentation
      九州大学,福岡県
    • Year and Date
      2012-09-17
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] 地球生物学入門2011

    • Author(s)
      大河内直彦
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ(招待講演)
    • Year and Date
      2011-05-24
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] 地球生物学入門2011

    • Author(s)
      大河内直彦
    • Organizer
      地球惑星科学連合大会スペシャルレクチャー
    • Place of Presentation
      千葉県,幕張メッセ国際会議場
    • Year and Date
      2011-05-24
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] Nitrogen isotopic compositions of sedimentary chlorophylls and porphyrins for reconstructing paleo nitrogen cycle2010

    • Author(s)
      Ohkouchi N
    • Organizer
      International Conference on Paleoceanography
    • Place of Presentation
      La Jolla, USA
    • Year and Date
      2010-08-30
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] Nitrogen isotopic compositions of sedimentary chlorophylls and porphyrins for reconstructing paleo nitrogen cycle2010

    • Author(s)
      Ohkouchi, N
    • Organizer
      International Conference on Paleoceanography
    • Place of Presentation
      La Jolla, California, USA
    • Year and Date
      2010-08-31
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] Stable isotopic compositions of chlorophylls as tools for tracing natural processes2010

    • Author(s)
      Ohkouchi N, Ogawa NO, Chikaraishi Y, Suga H, Kashiyama Y
    • Organizer
      Sixth International Workshop on Supramolecular Nanoscience of Chemically Programmed Pigments
    • Place of Presentation
      京都府, 立命館大学
    • Year and Date
      2010-06-10
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244071
  • [Presentation] 生きている指標とされるIntact Polar Lipidsとその地球化学的意味2009

    • Author(s)
      高野淑識, Julius Lipp, 山口保彦, Kai-Uwe Hinrichs, 大河内直彦
    • Organizer
      日本有機地球化学会
    • Place of Presentation
      松江
    • Year and Date
      2009-08-05
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 原生代初期における有機炭素同位体比変動 : 大酸化イベントにおける炭素循環と気候環境変動への示唆2009

    • Author(s)
      関根康人, 大河内直彦, 小川奈々子, 田近英一, 多田隆治, 後藤和久, 山本信治
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      千葉
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Presentation] 地下生物圏の生細胞識別法および代謝活性評価法の開発:シグナルを分子レベルで分ける2009

    • Author(s)
      高野淑識, 小川奈々子, 力石嘉人, 大河内直彦
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Year and Date
      2009-05-23
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 海底堆積物中の古細菌が生きている直接の証拠2009

    • Author(s)
      高野淑識, 力石嘉人, 小川奈々子, 野牧秀隆, 大河内直彦
    • Organizer
      日本地球化学会
    • Place of Presentation
      広島
    • Year and Date
      2009-09-15
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Enantiomer-specific isotope analysis (ESIA) of D- and L-alanine for nitrogen isotopic composition (15N/14N) in bacterial and chemical processes2009

    • Author(s)
      Y. Takano, Y. Chikaraishi, N.O. Ogawa, N. Ohkouchi
    • Organizer
      24th International Meeting on Organic Geochemistry Bremen
    • Place of Presentation
      Organic Geochemistry Bremen
    • Year and Date
      2009-09-07
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Development of ultra-small scale radiocarbon sample measurement at MALT AMS2009

    • Author(s)
      Koizumi, M., Yokoyama, Y., Matsuzaki, H., Miyairi, Y., Ohkouchi, N.
    • Organizer
      Tokyo University.
    • Place of Presentation
      Radiocarbon Conference, Rome.
    • Year and Date
      2009-06-12
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Elucidation of food web structures based on compound-specific nitrogen isotopic composition of amino acids2009

    • Author(s)
      Yoshito Chikaraishi, Nanako O. Ogawa, Yuichiro Kashiyama, Yoshinori Takano, Yasuhiko Yamaguchi, Hiroshi Kitazato, Naohiko Ohkouchi
    • Organizer
      24th International Meeting on Organic Geochemistry Bremen
    • Place of Presentation
      Organic Geochemistry Bremen
    • Year and Date
      2009-09-08
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 海洋の生物地球化学的循環の変動2009

    • Author(s)
      大河内直彦
    • Organizer
      地球惑星連合大会
    • Place of Presentation
      千葉市, 幕張メッセ
    • Year and Date
      2009-05-22
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] 「アミノ酸栄養段階」古食性解析に向けた殻体内アミノ酸同位体分析法の開発2009

    • Author(s)
      柏山祐一郎, 力石嘉人, 高野淑識, 小川奈々子, 北里洋, 大河内直彦
    • Organizer
      日本古生物学会
    • Place of Presentation
      沖縄
    • Year and Date
      2009-02-01
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 原生代初期ヒューロニアン氷河期と大酸化イベントの因果関係2009

    • Author(s)
      関根康人, 田近英一, 鈴木勝彦, 仙田量子, 大河内直彦, 小川奈々子, 多田隆治, 後藤和久, 山本信治
    • Organizer
      日本地球惑星科学連合2009年大会
    • Place of Presentation
      千葉
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Presentation] Methods for detecting Holocene sea level signals in Antarctica.2009

    • Author(s)
      Yokoyama, Y. Yamane, M., Ohkouchi, N., Matsuzaki, H.
    • Organizer
      Geological Society of America.
    • Year and Date
      2009-11-06
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Nitrogen isotopic compositions of amino acids from microorganisms as a tool for studying microbial processes.2009

    • Author(s)
      Yamaguchi, Y.T., Y. Takano, Y. Chikaraishi, Y. Yokoyama, N. Ohkouchi
    • Organizer
      19th International Symposium on Environmental Biogeochemistry
    • Place of Presentation
      Humburg
    • Year and Date
      2009-09-14
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Future directions in probing global biogeochemical cycles.2009

    • Author(s)
      Ohkouchi, N.
    • Organizer
      IVENST keynote lecture
    • Place of Presentation
      Bremen
    • Year and Date
      2009-11-23
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] 微生物のアミノ酸窒素同位体組成:微生物食物連鎖の解明へ向けて2009

    • Author(s)
      山口保彦, 高野淑識, 力石嘉人, 大河内直彦
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      幕張
    • Year and Date
      2009-05-23
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] In-situ 13C-tracer experiments for deep-sea benthic Archaea: evidence of active metabolism by membrane lipid biomarkers2009

    • Author(s)
      Y. Takano, N.O. Ogawa, H. Nomaki, Y. Chikaraishi, H. Kitazato, N. Ohkouchi
    • Organizer
      24th International Meeting on Organic Geochemistry
    • Place of Presentation
      Bremen
    • Year and Date
      2009-09-07
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 海洋の生物地球化学的循環の変動.2009

    • Author(s)
      大河内直彦
    • Organizer
      地球惑星科学連合大会2009
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2009-05-20
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] アミノ酸の窒素同位体比を用いた新しい古食性解析法:応用と展望2008

    • Author(s)
      柏山祐一郎, 力石嘉人, 高野淑識, 小川奈々子, 北里洋, 大河内直彦, 冨田武照, 棚部一成
    • Organizer
      2008年古生物学会年会
    • Place of Presentation
      仙台
    • Year and Date
      2008-07-05
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Application of compound-specific radiocarbon dating for Antarctic margin sediments2008

    • Author(s)
      大河内直彦
    • Organizer
      American Geophysical Union
    • Place of Presentation
      サンフランシスコモスコン・センター
    • Year and Date
      2008-12-18
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] 西南極氷床変動史の復元に向けた化合物レベル放射性炭素年代測定法の開発.2008

    • Author(s)
      小泉真認, 横山祐典, Anderson, J., 大河内直彦
    • Organizer
      日本地球化学会
    • Place of Presentation
      東大
    • Year and Date
      2008-09-15
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] 原核生物のペプチドグリカンに含まれるD-, L-アラニンの立体異性体分子レベル窒素同位体比2008

    • Author(s)
      高野淑識, 力石嘉人, 小川奈々子, 北里洋, 大河内直彦
    • Organizer
      2008年度日本有機地球化学会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-07-24
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] 海底での同位体トレーサー培養実験からみた古細菌の代謝活性2008

    • Author(s)
      高野淑識, 野牧秀隆, 小川奈々子, 力石嘉人, 稲垣史生, 北里洋, 大河内直彦
    • Organizer
      2008年度日本地球化学会
    • Place of Presentation
      駒場
    • Year and Date
      2008-09-18
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] In-situ tracer experiment for benthic archaea: carbon isotopic evidence of active metabolism from caldarchaeol and crenarchaeol of archaeal membrane lipids2008

    • Author(s)
      Yoshinori Takano, Hidetaka Nomaki, Nanako O. Ogawa, Yoshito Chikaraishi, Hiroshi Kitazato, Naohiko Ohkouchi
    • Organizer
      7th International Symposium for Subsurface Microbiology (ISSM)
    • Place of Presentation
      Shizuoka
    • Year and Date
      2008-11-16
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] カナダ・原生代初期ヒューロニアン累層群における氷河性堆積物層のオスミウム同位体変動:酸素増大イベントと気候変動の因果関係に与える示唆2008

    • Author(s)
      関根康人, 鈴木勝彦, 仙田量子, 田近英一, 多田隆治, 後藤和久, 山本信治, 大河内直彦, 小川奈々子
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      東京
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Presentation] アミノ酸の窒素同位体比を用いた新しい古食性解析法:原理2008

    • Author(s)
      大河内直彦, 力石嘉人, 小川奈々子, 柏山祐一郎, 高野淑識, 北里洋
    • Organizer
      2008年古生物学会年会
    • Place of Presentation
      仙台
    • Year and Date
      2008-07-05
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] アミノ酸の窒素同位体比を用いた食物連鎖解析2008

    • Author(s)
      力石嘉人, 小川奈々子, 柏山祐一郎, 高野淑識, 北里洋, 大河内直彦
    • Organizer
      2008年度日本地球化学会
    • Place of Presentation
      駒場
    • Year and Date
      2008-09-18
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Application of compound-specific radiocarbon dating for Antarctic margin sediments2008

    • Author(s)
      Ohkouchi N.
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      米国(モスコーニコンベンションセンター/サンフランシスコ)
    • Year and Date
      2008-12-15
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] 分子レベルから立体異性体分子レベル窒素同位体比への展開2008

    • Author(s)
      高野淑識, 力石嘉人, 小川奈々子, 北里洋, 大河内直彦
    • Organizer
      2008年度日本地球化学会
    • Place of Presentation
      駒場
    • Year and Date
      2008-09-18
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Absolute trophic level estimated from nitrogen isotopic composition of amino acids2008

    • Author(s)
      Ohkouchi N.
    • Organizer
      Memorial Symposium of the 24th International Prize for Biology "Ecology for the Changing World"
    • Place of Presentation
      宮城(仙台国際センター)
    • Year and Date
      2008-12-10
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] Radiocarbon calibration between 30 and 45ka: Evidence from laminated sediments form Janan Sea2008

    • Author(s)
      Ohkouchi N.
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      米国(モスコーニコンベンションセンター/サンフランシスコ)
    • Year and Date
      2008-12-15
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] アミノ酸の窒素同位体比分析を用いた北海道縄文時代人の食性解析2008

    • Author(s)
      内藤裕一, Noah V. Honch, 大河内直彦, 小川奈々子, 力石嘉人, 高野淑識, 柏山祐一郎, 米田穣
    • Organizer
      2008年度日本地球化学会
    • Place of Presentation
      駒場
    • Year and Date
      2008-09-18
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Intramolecular carbon isotopic signature in tetrapyrrole nucleus of chlorophylls2008

    • Author(s)
      Ohkouchi N.
    • Organizer
      The 4th International Symposium on Isotopomers (ISI)
    • Place of Presentation
      東京(科学未来館)
    • Year and Date
      2008-10-01
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] Site-specific 13C/12C analysis of alanine by NMR2008

    • Author(s)
      Y.C. Saigusa, Y. Chikaraishi, Y. Takano, H. Kitazato, N. Ohkouchi
    • Organizer
      4th International Symposium on Isotopomers (ISI)
    • Place of Presentation
      Tokyo
    • Year and Date
      2008-10-05
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] アミノ酸の窒素同位体比を用いた新しい古食性解析法:原理2008

    • Author(s)
      大河内直彦
    • Organizer
      2008年古生物学会年会
    • Place of Presentation
      東北大学,仙台
    • Year and Date
      2008-07-30
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Development a novel method to isolate fatty acids for compound-specific radiocarbon dating to reconstruct West Antarctic Ice Sheet melting history.2008

    • Author(s)
      Koizumi, M., Yokoyama, Y., Anderson, J.B., Ohkouchi, N.
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2008-12-18
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Application of NMR to characterize intact polar lipids in deep biosphere2008

    • Author(s)
      Yoshinori Takano, Fumio Inagaki, Yuki Morono, Nanako O. Ogawa, Hiroshi Kitazato, Naohiko Ohkouchi
    • Organizer
      Goldschmidt conference
    • Place of Presentation
      Vancover, Canada
    • Year and Date
      2008-07-15
    • Data Source
      KAKENHI-PROJECT-20740316
  • [Presentation] Application of compound-specific radiocarbon dating for Antarctic margin sediments.2008

    • Author(s)
      Ohkouchi, N., Koizumi, M., Anderson, J.B., Eglinton, T.I., Miura, H., Yokoyama, Y.
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2008-12-17
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] 西南極氷床の完新世における融解.2008

    • Author(s)
      大河内直彦, 横山祐典, 三浦英樹, 豊田倫子, 力石嘉人, 小泉真認, Eglinton, T.I., 北里洋
    • Organizer
      日本第四紀学会シンポジウム「第四紀後期の気候変動と地球システムの挙動ーその原因とメカニズムの解明に向けてー」
    • Place of Presentation
      東京大学小柴ホール
    • Year and Date
      2008-08-25
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Sea-level changes during the time into and out of the Last Glacial Maximum.2008

    • Author(s)
      Yokoyama, Y., Suga, H., Esat, T.M., Ohkouchi, N., Lambeck, K.
    • Organizer
      PAGES/IMAGES Workshop“Empirical Constraints on Future Sea-Level Rise
    • Place of Presentation
      Bern
    • Year and Date
      2008-08-25
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Pb and C isotopes in Paleoproterozoic carbonates in North America : Implications for the correlation with asnowball Earth at 2.2Ga2007

    • Author(s)
      Sekine, Y., E. Tajika, M. Tanimizu, N.Ohkouchi, N. O. Ogawa, R. Tada, K. Goto,S. Nakai, K. Kanai, S. Yamamoto
    • Organizer
      日本地球惑星科学連合2007年大会
    • Place of Presentation
      千葉
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Presentation] Application of compound-specific radiocarbon dating for studying West Antarctic Ice Sheet during the Late Quaternary.2007

    • Author(s)
      Ohkouchi N, Eglinton TI, Toyoda M, Chikaraishi Y, Koizumi M, Tokuyama H, Miura H, Yokoyama Y
    • Organizer
      oldschmidt Conference
    • Place of Presentation
      Cologne
    • Year and Date
      2007-08-22
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Reconstruction of sedimentary environment in early Pleistocene using archaeon biomarkers2007

    • Author(s)
      Misato, Tsuboi, Eiko, Nakamura, Ryuichi, Majima, Hiroshi, Kitazato, Hisami, Suga, Kohei, Matsumoto, Yoshito, Chikaraishi, Naohiko, Ohkouchi
    • Organizer
      Japan Geoscience Union Meeting 2007
    • Place of Presentation
      Makuhari Mess
    • Year and Date
      2007-05-22
    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16204041
  • [Presentation] Core observations of a cold seep assemblage occurring in the lower Pleistocene fore-arc fill deposits at Segami, Pacific side of central Japan2007

    • Author(s)
      Ryuichi, Majima, Atsuro, Kouda, Misato, Tsuboi, Kazuhiro, Kato, Hideki, Wada, Hiroshi, Kitazato, Nohiko, Ohkouchi, Eiko, Nakamura, Kouji, Kameo
    • Organizer
      Japan Geoscience Union Meeting 2007
    • Place of Presentation
      Makuhari Mess
    • Year and Date
      2007-05-22
    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16204041
  • [Presentation] Large negative excursion of organic carbon isotope in the aftermath of the Paleoproterozoic glaciation in North America : methane-hydrate destabilization, climate recovery, and the Great Oxidation Event2007

    • Author(s)
      Sekine, Y., Tajika, E., Ohkouchi, N.,Ogawa, N.O., Goto, K., Tada, R., Kanai,K. and Yamamoto, S.
    • Organizer
      AmericanGeophysical Union Fall Meeting
    • Place of Presentation
      San Francisco
    • Data Source
      KAKENHI-PROJECT-18340128
  • [Presentation] Treibs' scheme re-evaluated with nitrogen and carbon isotopic compositions of sedimentary porphyrins2007

    • Author(s)
      Ohkouchi, N.,
    • Organizer
      International Meeting on Org. Geochem.
    • Place of Presentation
      トーキー(英国) European Association of Organic Geochemists
    • Year and Date
      2007-09-09
    • Data Source
      KAKENHI-PROJECT-19GS0211
  • [Presentation] Application of compound-specific radiocarbon dating for studying West Antarctictic Ice Sheet during the Late Quaternary2007

    • Author(s)
      Ohkouchi, N.
    • Organizer
      Goldschmidt Conference 2007
    • Place of Presentation
      ドイツ・ケルン
    • Year and Date
      2007-08-20
    • Data Source
      KAKENHI-PROJECT-19340158
  • [Presentation] Associations of fish juveniles and benthic animals with large-sized jellyfish in Asian waters: key issues in pelagic realms

    • Author(s)
      Susumu Ohtsuka, Yusuke Kondo, Shoma Okada, Jun Nishikawa, Khwanruan Srinui, Ephrime Meitllo, Fatimah Md. Yusoff, Nanako O. Ogawa, Naohiko Ohkouchi, Shuhei Nishida
    • Organizer
      IOC/WESTPAC
    • Place of Presentation
      Nha Trang, Vietnam
    • Year and Date
      2014-04-21 – 2014-04-24
    • Data Source
      KAKENHI-PROJECT-25304031
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