Rchr
J-GLOBAL ID：201801000235596863   Update date: Oct. 27, 2025

Toh Akiko

Toh Akiko
Affiliation and department：
Japan Agency for Marine-Earth Science and Technology Research and Development Center for Earthquake and Tsunami Forecasting

About Japan Agency for Marine-Earth Science and Technology Research and Development Center for Earthquake and Tsunami Forecasting


Research field  (1)： Solid earth science
Research theme for competitive and other funds  (6)：
  • 2025 - 2028 小さなスロー地震は、特徴的なサブ波長構造の中で発生する普通地震か?
  • 2020 - 2024 震源域近傍の異常構造を考慮した地震波形モデリングによる、スロー地震の新しい震源像
  • 2019 - 2022 Tremor震源近傍の異常構造の定量的評価に基づく、スロー地震断層の新しい描像
  • 2015 - 2017 Estimation of shear wave velocity structure at shallow ocean bottom, by using synthetic waveforms that rigorously handles the complex structures in the vicinity of seafloor
  • 2011 - 2015 Detail structure of the large low shear velocity province at the base of the mantle, estimated by waveform modelling of S waves
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Papers (16)：
  • Yi-Hsuan Wu, Wu-Cheng Chi, Liam Chai, Akiko Toh, M. Megawati, Chin-Jen Lin. Mechanism of Dynamic Triggering for Slab-Related Fluid-Induced Tremors Occurred in Nanao, Taiwan. Bulletin of the Seismological Society of America. 2025
  • A. Toh, Y. Capdeville, W.-C. Chi, S. Ide. Strongly Scattering Medium Along Slow Earthquake Fault Zones Based on New Observations of Short-Duration Tremors. Geophysical Research Letters. 2023. 50. 8
  • R. Plata-Martinez, S. Ide, M. Shinohara, E. S. Garcia, N. Mizuno, L. A. Dominguez, T. Taira, Y. Yamashita, A. Toh, T. Yamada, et al. Shallow slow earthquakes to decipher future catastrophic earthquakes in the Guerrero seismic gap. Nature Communications. 2021. 12. 1
  • A. Toh, W. J. Chen, N. Takeuchi, D. S. Dreger, W. C. Chi, S. Ide. Influence of a Subducted Oceanic Ridge on the Distribution of Shallow VLFEs in the Nankai Trough as Revealed by Moment Tensor Inversion and Cluster Analysis. Geophysical Research Letters. 2020. 47. 15
  • Akiko Toh, Koichiro Obana, Eiichiro Araki. Distribution of very low frequency earthquakes in the Nankai accretionary prism influenced by a subducting-ridge. Earth and Planetary Science Letters. 2018. 482. 342-356
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MISC (19)：
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Lectures and oral presentations  (9)：
  • Classification of Ordinary Earthquakes and Tectonic Tremors in the Shallow Subduction Zone Based on New Indicators
    (AOGS2025 2025)
  • Development of a Quasi-Real-Time Analysis System for Seismic Activity in the Shallow Subduction Zone Using Seafloor DAS and OBS Records
    (Japan Geoscience Union Meeting 2025 2025)
  • Strongly scattering medium along the slow earthquake fault zones, inferred by new observations of short-duration tremors
    (AGU Fall Meeting 2022 (T46A-06) 2022)
  • The anomalous structure along the slow earthquake fault zone, inferred from short signal duration tremors
    (日本地球惑星科学連合大会予稿集(Web) 2022)
  • Strongly scattering medium along slow earthquake fault zones, inferred by the new observations of short-duration tremors
    (日本地震学会秋季大会講演予稿集(CD-ROM) 2022)
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Education (3)：
  • 2000 - 2006 カルフォルニア大学バークレー校 地球惑星科学学科
  • 1998 - 2000 The University of Tokyo Graduate School of Science
  • 1994 - 1998 Kyushu University School of Sciences Department of Earth and Planetary Sciences
Work history (12)：
  • 2024/03 - 現在 Japan Agency for Marine-Earth Science and Technology
  • 2024/01 - 2024/03 The University of Tokyo Earthquake Research Institute Earthquake Prediction Research Center
  • 2020/04 - 2023/10 The University of Tokyo
  • 2018/06 - 2020/03 The University of Tokyo
  • 2017/06 - 2018/05 中央研究院(台湾) 地球科学研究所 客座専家
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