toh akiko 藤亜希子

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Toh Akiko 藤亜希子

TO Akiko 藤亜希子

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Researcher Number	70587344
Other IDs
Affiliation (Current)	2025: 国立研究開発法人海洋研究開発機構, 海域地震火山部門(地震津波予測研究開発センター), 特任研究員
Affiliation (based on the past Project Information) *help	2025: 国立研究開発法人海洋研究開発機構, 海域地震火山部門(地震津波予測研究開発センター), 特任研究員 2019 – 2022: 東京大学, 大学院理学系研究科(理学部), 特別研究員 2015 – 2016: 国立研究開発法人海洋研究開発機構, 地震津波海域観測研究開発センター, 研究員 2014: 独立行政法人海洋研究開発機構, 地震津波海域観測研究開発センター, 研究員 2011 – 2013: 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 技術研究副主任
Review Section/Research Field	Principal Investigator Basic Section 17040:Solid earth sciences-related / Solid earth and planetary physics
Keywords	Principal Investigator 南海トラフ / スペクトル要素法 / 超低周波地震 / 微動 / スロー地震 / 広帯域海底地震計 / DONET / 広帯域海底地震計記録 / Tremor / 非火山性微動 … More / 低周波微動 / 海底広帯域地震計 / 震源と構造の相互作用 / 地震波散乱 / 海底地震計 / 海底下構造 / 階層クラスタリング / 分岐断層 / 浅部低周波地震 / Neighborhood algorithm / S波速度構造 / コアーマントル境界 / LLSVP / コア－マントル境界 / 地球内部構造 / 広域低速度領域 / 実体波 / コア-マントル境界 Less

Are small slow earthquakes just ordinary earthquakes occurring in characteristic structures?Principal Investigator
- Principal Investigator
  
  藤亜希子
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 17040:Solid earth sciences-related
- Research Institution
  Japan Agency for Marine-Earth Science and Technology
A new depiction of slow earthquake fault zone based on the quantitative evaluation of anomalous structures around tremor sourcesPrincipal Investigator
- Principal Investigator
  
  Toh Akiko
- Project Period (FY)
  2019 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 17040:Solid earth sciences-related
- Research Institution
  The University of Tokyo
Estimation of shear wave velocity structure at shallow ocean bottom, by using synthetic waveforms that rigorously handles the complex structures in the vicinity of seafloorPrincipal Investigator
- Principal Investigator
  
  TOH Akiko
- Project Period (FY)
  2015 – 2016
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Solid earth and planetary physics
- Research Institution
  Japan Agency for Marine-Earth Science and Technology
Detail structure of the large low shear velocity province at the base of the mantle, estimated by waveform modelling of S wavesPrincipal Investigator
- Principal Investigator
  
  TO Akiko
- Project Period (FY)
  2011 – 2014
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Solid earth and planetary physics
- Research Institution
  Japan Agency for Marine-Earth Science and Technology

All 2023 2022 2020 2019 2016 2015 2014 2013 2012 2011 Other

All Journal Article Presentation

[Journal Article] Strongly Scattering Medium Along Slow Earthquake Fault Zones Based on New Observations of Short‐Duration Tremors2023
- Author(s)
  Toh A.、Capdeville Y.、Chi W.‐C.、Ide S.
- Journal Title
  
  Geophysical Research Letters
  
  Volume: 50 Issue: 8
- DOI
  10.1029/2022gl101851
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010, KAKENHI-PROJECT-22KJ0503, KAKENHI-PLANNED-21H05201
[Journal Article] Influence of a Subducted Oceanic Ridge on the Distribution of Shallow VLFEs in the Nankai Trough as Revealed by Moment Tensor Inversion and Cluster Analysis2020
- Author(s)
  Toh A.、Chen W. J.、Takeuchi N.、Dreger D. S.、Chi W. C.、Ide S.
- Journal Title
  
  Geophysical Research Letters
  
  Volume: 47 Issue: 15 Pages: 1-9
- DOI
  10.1029/2020gl087244
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010, KAKENHI-PROJECT-18K03798, KAKENHI-PLANNED-16H06477, KAKENHI-PROJECT-22KJ0503, KAKENHI-PROJECT-16H02219
[Journal Article] Small size very low frequency earthquakes in the Nankai accretionary prism, following the 2011 Tohoku-Oki earthquake2015
- Author(s)
  Akiko To*, Koichiro Obana, Hiroko Sugioka, Eiichiro Araki, Narumi Takahashi, Yoshio Fukao
- Journal Title
  
  Physics of the Earth and Planetary Interiors
  
  Volume: in press
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-23740345
[Journal Article] Anomalously low amplitude of S waves produced by the 3D structures in the lower mantle2015
- Author(s)
  Akiko To, Yann Capdeville, Barbara Romanowicz
- Journal Title
  
  Physics of the Earth and Planetary Interiors
  
  Volume: 256 Pages: 26-36
- DOI
  10.1016/j.pepi.2016.04.001
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Journal Article] Source characteristics of ocean infragravity waves in the Philippine Sea: Analysis of three-year continuous network records of seafloor motion and pressure2014
- Author(s)
  Yoko Tono, Kiwamu Nishida, Yoshio Fukao, Akiko To, Narumi Takahashi
- Journal Title
  
  Earth Planets and Space
  
  Volume: 66 Issue: 1 Pages: 1-8
- DOI
  10.1186/1880-5981-66-99
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23740345, KAKENHI-PROJECT-25247074, KAKENHI-PROJECT-26400448
[Journal Article] Development of a SeisComP3 module for detecting micro earthquakes and its application to ocean bottom network data2014
- Author(s)
  Akiko To, Jan Becker, Bernd Weber, Morifumi Takaesu, Narumi Takahashi, Yoshio Fukao, Seiji Tsuboi
- Journal Title
  
  JAMSTEC Report of Research and Development
  
  Volume: 18 Pages: 1-15
- NAID
  130004707758
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] Strongly scattering medium along the slow earthquake fault zones, inferred by new observations of short-duration tremors2022
- Author(s)
  Toh, A., Capdeville, Y., Chi, W.-C., Ide, S
- Organizer
  AGU Fall meeting
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Short-duration tremorが示唆する、スロー地震断層帯の異常構造2022
- Author(s)
  藤亜希子、戚正務、Capdeville Yann、井出哲
- Organizer
  日本地震学会 2022年度秋季大会
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] The anomalous structure along the slow earthquake fault zone, inferred from short signal duration tremors2022
- Author(s)
  藤亜希子、戚正務、Capdeville Yann、井出哲
- Organizer
  日本地球惑星科学連合2022年大会
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Toward a comprehensive catalogue of tremors in shallow subduction zones that enable to identify tremor missing regions2022
- Author(s)
  藤亜希子、井出哲
- Organizer
  日本地球惑星科学連合2022年大会
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Shallow slow earthquakes and mechanical properties at the Guerrero seismic Gap, Mexico2020
- Author(s)
  Raymundo Omar Plata Martinez, Satoshi Ide, Masanao Shinohara, Emmanuel Garcia, Naoto Mizuno, Luis A Dominguez, Taka'aki Taira, Yusuke Yamashita, Akiko Toh, Tomoaki Yamada, Jorge Arturo Real, Victor M Cruz-Atienza, Allen Leroy Husker, Yoshihiro Ito
- Organizer
  AGU Fall Meeting 2020
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] 南海トラフ東部に沈み込む海嶺と浅部超低周波地震の震源分布2020
- Author(s)
  藤亜希子
- Organizer
  新学術領域「スロー地震学」Slow Earthquakes WS 2020 Virtual
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] 南海トラフ東部に沈み込む海嶺と浅部超低周波地震の震源分布2020
- Author(s)
  藤亜希子
- Organizer
  新学術領域「スロー地震学」C01班オンライン研究集会
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] First insight in OBS data and shallow tremor detection at the Guerrero Gap, Mexico2019
- Author(s)
  Martinez R. O. P., S. Ide, N. Mizuno, M. Shinohara, T. Yamada, A. L. Husker, J. A. Real, V. M. Cruz-Atienza, Y. Yamashita, A. Toh, Y. Ito,
- Organizer
  AGU Fall meeting 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Further evidence for the influence of a subducting-ridge on the distribution of shallow VLFEs in the eastern Nankai Trough2019
- Author(s)
  Toh A., W. Chen, D. Dreger, W. Chi, S. Ide
- Organizer
  AGU Fall meeting 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Further evidence for the influence of a subducting-ridge on the spatial strain accumulation and release pattern in the shallow eastern Nankai Trough, based on VLFE distribution2019
- Author(s)
  Toh A., W. Chen, D. Dreger, W. Chi, S. Ide
- Organizer
  JpGU2019
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] 南海トラフ東部に沈み込む海嶺と浅部超低周波地震の震源分布2019
- Author(s)
  Toh A., W. Chen, D. Dreger, W. Chi, S. Ide
- Organizer
  2019年日本地震学会秋季大会
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Further evidence for the influence of a subducting-ridge on the distribution of shallow VLFEs in the eastern Nankai Trough2019
- Author(s)
  Toh A., W. Chen, D. Dreger, W. Chi, S. Ide
- Organizer
  International Joint Workshop on Slow Earthquakes 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K04010
[Presentation] Distribution of shallow very low frequency earthquakes in the eastern Nankai trough influenced by a subducted oceanic ridge: Results from cluster analysis applied to ocean bottom seismographs.2016
- Author(s)
  To, A., Obana, K. and Araki E.
- Organizer
  AGU Fall meeting 2016
- Place of Presentation
  San Francisco, USA
- Year and Date
  2016-12-15
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Influence of a subducted ridge on the distribution of very low frequency earthquakes in the Nankai accretionary prism: results from cluster analysis of ocean bottom seismographs2016
- Author(s)
  To, A., Obana, K. and Araki E.
- Organizer
  Joint Workshop on Slow Earthquakes 2016
- Place of Presentation
  東京大学地震研究所, 東京都文京区
- Year and Date
  2016-09-13
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Spatio-temporal distribution of very low frequency earthquakes in the eastern Nankai accretionary prism revealed by hierarchical clustering analysis of ocean bottom seismometer record2016
- Author(s)
  To, A., Obana, K. and Araki E.
- Organizer
  JpGU meeting 2016
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Year and Date
  2016-05-22
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Possible shallow episodic slowslip in the Nankai Trough seismogenic zone detected by seafloor borehole observatory.2016
- Author(s)
  Araki, E., To, A., M., Kimura, T. Machida, Y. and Saffer, D. M
- Organizer
  JpGU meeting 2016
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Year and Date
  2016-05-24
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Sequence of slow slip events and low frequency earthquakes in the shallow part of the Nankai Trough seismogenic zone observed by seafloor observation network2016
- Author(s)
  Araki, E., Saffer, D. M., Kopf, A., To, A., Ide, S., Nakano, M., Kimura, T. and Machida, Y.
- Organizer
  AGU Fall meeting 2016
- Place of Presentation
  San Francisco, U.S.A.
- Year and Date
  2016-12-13
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] 沈み込む海嶺に影響された南海トラフ東部の浅部超低周波地震分布2016
- Author(s)
  藤亜希子、尾鼻浩一郎、荒木英一郎
- Organizer
  日本地震学会2016年度秋季大会
- Place of Presentation
  名古屋国際会議場、愛知県名古屋市
- Year and Date
  2016-10-05
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Amplitude Anomalies of S Waves Caused by Low Shear Velocity Structures at the Base of the Mantle.2015
- Author(s)
  To, A., Capdeville, Y. and Romanowicz, B
- Organizer
  AGU Fall meeting 2015
- Place of Presentation
  San Francisco, USA
- Year and Date
  2015-12-18
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H06904
[Presentation] Development of a SeisComP3 module for detecting micro earthquakes and its application to ocean bottom network data2013
- Author(s)
  Akiko To, Jan Becker, Bernd Weber, Morifumi Takaesu, Narumi Takahashi, Yoshio Fukao, Seiji Tsuboi
- Organizer
  AGU 2013 Fall Meeting
- Place of Presentation
  サンフランシスコ, Moscone Convention Center,　アメリカ合衆国
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] 2011年東北地方太平洋沖地震により誘発された東南海付加体の低周波微動2012
- Author(s)
  藤亜希子尾鼻浩一郎、高橋成実、深尾良夫
- Organizer
  日本地球惑星科学連合 2012年度連合大会
- Place of Presentation
  千葉　幕張
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] Low frequency tremors in the Tonankai accretionary prism, triggered by the 2011 Tohoku-Oki earthquake2012
- Author(s)
  To A., Obana K., Takahashi N., Fukao Y.
- Organizer
  2012 AGU Fall Meeting
- Place of Presentation
  San Francisco, USA
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] Constraints on the 3D shape of the ultra-low shear velocity zone at the base of the mantle beneath the central Pacific2011
- Author(s)
  A. To and Y. Capdeville
- Organizer
  AGU fall meeting 2011
- Place of Presentation
  San Francisco, USA
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] Constraints on the 3D shape of the ultra low shear velocity zone at the base of the mantle beneath the central Pacific2011
- Author(s)
  A. To
- Organizer
  JPGU 2011 meeting
- Place of Presentation
  幕張メッセ, 千葉県
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] On the estimation of the wavelength and amplitude of the heterogeneous structure near the core-mantle boundary2011
- Author(s)
  A. To
- Organizer
  The 4th YESA workshop in Ehime University(招待講演)
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-23740345
[Presentation] Broadband features of the shallow low frequency events in Nankai trough, excited after the 2011 Tohoku-Oki earthquake
- Author(s)
  Akiko To, Koichiro Obana, Narumi Takahashi, Yoshio Fukao
- Organizer
  日本地球惑星科学連合大会
- Place of Presentation
  千葉県　幕張メッセ
- Data Source
  KAKENHI-PROJECT-23740345

1. 平井敬 (00708373)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
2. CAPDEVILLE Yann

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results

toh akiko 藤 亜希子

Toh Akiko 藤 亜希子

TO Akiko 藤 亜希子

Research Projects

Research Products

Co-Researchers

Are small slow earthquakes just ordinary earthquakes occurring in characteristic structures?Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

A new depiction of slow earthquake fault zone based on the quantitative evaluation of anomalous structures around tremor sourcesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Estimation of shear wave velocity structure at shallow ocean bottom, by using synthetic waveforms that rigorously handles the complex structures in the vicinity of seafloorPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Detail structure of the large low shear velocity province at the base of the mantle, estimated by waveform modelling of S wavesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Strongly Scattering Medium Along Slow Earthquake Fault Zones Based on New Observations of Short‐Duration Tremors2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Influence of a Subducted Oceanic Ridge on the Distribution of Shallow VLFEs in the Nankai Trough as Revealed by Moment Tensor Inversion and Cluster Analysis2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Small size very low frequency earthquakes in the Nankai accretionary prism, following the 2011 Tohoku-Oki earthquake2015

Author(s)

Journal Title

Data Source

[Journal Article] Anomalously low amplitude of S waves produced by the 3D structures in the lower mantle2015

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Source characteristics of ocean infragravity waves in the Philippine Sea: Analysis of three-year continuous network records of seafloor motion and pressure2014

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Development of a SeisComP3 module for detecting micro earthquakes and its application to ocean bottom network data2014

Author(s)

Journal Title

NAID

Data Source

[Presentation] Strongly scattering medium along the slow earthquake fault zones, inferred by new observations of short-duration tremors2022

Author(s)

Organizer

Data Source

[Presentation] Short-duration tremorが示唆する、スロー地震断層帯の異常構造2022

Author(s)

Organizer

Data Source

[Presentation] The anomalous structure along the slow earthquake fault zone, inferred from short signal duration tremors2022

Author(s)

Organizer

Data Source

[Presentation] Toward a comprehensive catalogue of tremors in shallow subduction zones that enable to identify tremor missing regions2022

Author(s)

Organizer

Data Source

[Presentation] Shallow slow earthquakes and mechanical properties at the Guerrero seismic Gap, Mexico2020

Author(s)

Organizer

Data Source

[Presentation] 南海トラフ東部に沈み込む海嶺と浅部超低周波地震の震源分布2020

toh akiko 藤亜希子

Toh Akiko 藤亜希子

TO Akiko 藤亜希子