Probabilistic Earthquake Seismology for Broadband and Hierarchical Seismic Source

• Project/Area Number: 21H04505
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 17:Earth and planetary science and related fields
• Research Institution: The University of Tokyo
• Principal Investigator: 井出 哲 東京大学, 大学院理学系研究科(理学部), 教授 (90292713)
• Co-Investigator(Kenkyū-buntansha): 矢部 優 国立研究開発法人産業技術総合研究所, 地質調査総合センター, 主任研究員 (30802699) ; 麻生 尚文 東京理科大学, 先進工学部物理工学科, 講師 (70801223)
• Project Period (FY): 2021-04-05 – 2026-03-31
• Project Status: Granted (Fiscal Year 2025)
• Budget Amount: ¥41,340,000 (Direct Cost: ¥31,800,000、Indirect Cost: ¥9,540,000); Fiscal Year 2025: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000); Fiscal Year 2024: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000); Fiscal Year 2023: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000); Fiscal Year 2022: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000); Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
• Keywords: 地震 / スロー地震 / データ解析 / モデル計算 / 確率予測 / 地震学 / モデル解析

Outline of Research at the Start

地震の震源で発生するプロセス（破壊を伴う摩擦すべり運動）を、確率的現象として理解するためにデータ解析や理論計算などを用いた研究を行う。地震には普通の地震とともに数ヘルツから日単位の広周波数（周期）帯域にわたるスロー地震を含む。地震発生帯内部に存在する階層的な断層構造に着目して、確率的予測可能性を検討する。日本を中心に世界各地の地震現象を対象に研究を進めて、普遍的な地震の性質を明らかにする。

Outline of Annual Research Achievements

本研究では確率論的地震発生論構築を目指して、(A)階層的固有性と決定論的震源プロセスのデータ解析、(B)スロー地震のデータ分析フロンティアの開拓、(C)確率論的地震モデルの高度化、の３サブカテゴリでデータ解析やモデル計算を進めている。今年度は以下の研究実績があった。
(A) 地震の初期破壊プロセスにおける固有性の定量化を北カリフォルニアの地震データに対して行い、東北沖と同様の結果を得た。また断層成熟度と階層性との関係について示唆を得た。初期破壊が破壊全体に及ぼす影響について、解析方法を開発し、国内データに適用を開始した。東北沖の沈み込み帯での固有性の包括的検証のための解析スキームを開発した。また階層性と関連する応力場の不均一性について重要なアンチリピーターという新たな現象の同定に貢献した。
(B) 客観的なテクトニック微動の検出判別手法を開発し西日本に適用することで、1秒から100秒まで連続的な微動の特徴を明らかにした。同手法をチリの三重会合点でのデータにあてはめ微動の検出に成功した。 四国西部の深部低周波地震の活動について、独自に開発した手法を用いて空間分布を調べた。歪・傾斜・GNSSを統合した短期的SSEのすべりインバージョンについて、多数のイベントの網羅的解析に着手した。GNSSとInSARを統合した南海トラフ沈み込み帯と中央構造線の固着分布推定手法を開発した。
(C) 震源移動の特徴について、確率論的なモデリングをするための統計解析に着手した。西南日本の微動のマイグレーションの特徴を抽出するため、自他励起型のホークス過程モデルを構築した。石英脈濃集体による微動的地震波放出のモデル化を進めると同時に、他の地質環境におけるクラック濃集体にも類似のモデルが適用可能か検討を開始した。

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

本年度は6篇の論文を出版することができた。さらに10篇近い論文が査読中、準備中となっており、そのすべてを上記の研究実績概要に記載できないほどである。主な理由としては、国際共同研究が極めて活発化していることにある。今年度だけでカナダ、米国、チリ、フランス、台湾、中国から訪問学生・研究者が多数滞在し濃密な共同研究が繰り広げられている。

Strategy for Future Research Activity

引き続き、(A)階層的固有性と決定論的震源プロセスのデータ解析、(B)スロー地震のデータ分析フロンティアの開拓、(C)確率論的地震モデルの高度化、の３サブカテゴリでデータ解析やモデル計算を進めていく。
(A) 初期破壊による破壊全体の特徴の予測可能性についての分析結果をまとめる。北海道・東北沖の沈み込み帯の階層的固有性を定量化する。世界の沈み込み帯の階層的固有性分析法を開発する。日本及びカリフォルニアでメカニズムがほぼ完全に反転した地震、アンチリピーター地震の検出を試みる。
(B) 火山性地震について開発した分析法を四国地方の低周波地震に適用する。サンアンドレアス断層の低周波地震のメカニズム解析についてこれまでの研究をまとめる。歪・傾斜データによるSSEの時空間滑りインバージョンを網羅的に実施するとともに、sub-daily時間スケールのスロースリップの探索を行う。低周波地震のマイグレーションにおける確率論的表現を検討する。微動の潮汐依存性によるメカニズム推定法を開発・検証する。
(C) スロースリップと巨大地震の相互作用モデルを現実的プレート形状を用いて構築する。階層性モデルにおける現実的地震サイクル計算において、静的核形成と動的核形成の違いに注目した分析を行う。広帯域スロー地震のうち微動クラスターの確率的表現を検討し、その地域的な性質の違いを用いた予測モデルを開発する。

Research Products

• [Int'l Joint Research] Stanford University/University of Michigan/Massachusetts Institute of Technology(米国)
• [Int'l Joint Research] ENS, Paris/Universite Grenoble Alpes(フランス)
• [Int'l Joint Research] Universidad de Chile(チリ)
• [Int'l Joint Research] UNAM(メキシコ)
• [Int'l Joint Research] GFZ(ドイツ)
• [Int'l Joint Research]
• [Int'l Joint Research] Stanford University/University of Michigan/Massachusetts Institute of Technology(米国)
• [Int'l Joint Research] ENS, Paris/Universite Grenoble Alpes(フランス)
• [Int'l Joint Research] Universidad de Chile(チリ)
• [Int'l Joint Research] UNAM(メキシコ)
• [Int'l Joint Research] GNS Science(ニュージーランド)
• [Int'l Joint Research]
• [Int'l Joint Research] Stanford University/University of Michigan/United States Geological Survey(米国)
• [Int'l Joint Research] BRGM/ENS, Paris/Universite Grenoble Alpes(フランス)
• [Int'l Joint Research] Universidad de Chile(チリ)
• [Int'l Joint Research] UNAM(メキシコ)
• [Int'l Joint Research] GNS Science(ニュージーランド)
• [Int'l Joint Research]
• [Int'l Joint Research] Universidad de Chile(チリ)
• [Int'l Joint Research] BRGM/ENS, Paris/Universite Grenoble Alpes(フランス)
• [Int'l Joint Research] Stanford University/University of Michigan/USGS(米国)
• [Int'l Joint Research] UNAM(メキシコ)
• [Int'l Joint Research] GNS Science(ニュージーランド)
• [Int'l Joint Research]
• [Journal Article] Fault material heterogeneity controls deep interplate earthquakes (2025)
  • Author(s): Huang Yihe、Ide Satoshi、Kato Aitaro、Yoshida Keisuke、Jiang Chengxin、Zhai Peng
  • Journal Title: Science Advances Volume: 11 Issue: 9
  • DOI: 10.1126/sciadv.adr9353
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Feature of cascading rupture frequently observed in Northern California (2025)
  • Author(s): Lu Weifan、Ide Satoshi、Yue Han
  • Journal Title: Communications Earth & Environment Volume: 6 Issue: 1
  • DOI: 10.1038/s43247-025-02138-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fast and Slow Subduction Earthquakes in Latin America (2025)
  • Author(s): Ruiz S.、Ide S.、Potin B.、Madariaga R.
  • Journal Title: Annual Review of Earth and Planetary Sciences Volume: 53 Issue: 1 Pages: 511-538
  • DOI: 10.1146/annurev-earth-040522-121945
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Kinematic Source Modeling Using Radiation-Corrected Empirical Green’s Functions in Waveform Inversion (2025)
  • Author(s): Shibata Ritsuya、Aso Naofumi
  • Journal Title: Bulletin of the Seismological Society of America Volume: - Issue: 3 Pages: 1212-1232
  • DOI: 10.1785/0120240077
  • Peer Reviewed
• [Journal Article] Crafting Rotatable Focal Sphere for Visualizing Focal Mechanism Solution (2024)
  • Author(s): IKURA Masato、ASO Naofumi
  • Journal Title: Zisin (Journal of the Seismological Society of Japan. 2nd ser.) Volume: 77 Issue: 0 Pages: 81-86
  • DOI: 10.4294/zisin.2024-8
  • ISSN: 0037-1114, 1883-9029, 2186-599X
  • Year and Date: 2024-11-26
  • Peer Reviewed
• [Journal Article] Event‐Feature‐Based Clustering Reveals Continuous Distribution of Tectonic Tremors of 0.3-100 s: Application to Western Japan (2024)
  • Author(s): Yano Seiya、Ide Satoshi
  • Journal Title: Geophysical Research Letters Volume: 51 Issue: 19
  • DOI: 10.1029/2024gl108874
  • Peer Reviewed / Open Access
• [Journal Article] Spatiotemporal Characteristics of Tectonic Tremors in the Collisional Orogen of Taiwan (2024)
  • Author(s): Ide Satoshi、Chen Kate Huihsuan
  • Journal Title: Geophysical Research Letters Volume: 51 Issue: 4
  • DOI: 10.1029/2023gl106759
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Correction to: Cubic moment?duration relationship of low-frequency earthquakes (2024)
  • Author(s): Genki Oikawa, Naofumi Aso
  • Journal Title: Geophysical Journal International Volume: 237 Issue: 2 Pages: 1249-1250
  • DOI: 10.1093/gji/ggae105
  • Peer Reviewed / Open Access
• [Journal Article] Anti-repeating earthquakes and how to explain them (2024)
  • Author(s): Cesca Simone、Niemz Peter、Dahm Torsten、Ide Satoshi
  • Journal Title: Communications Earth & Environment Volume: 5 Issue: 1
  • DOI: 10.1038/s43247-024-01290-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Slow earthquake scaling reconsidered as a boundary between distinct modes of rupture propagation (2023)
  • Author(s): Ide Satoshi、Beroza Gregory C.
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 120 Issue: 32
  • DOI: 10.1073/pnas.2222102120
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Single‐Station Method for Seismic Detection of Slow Earthquakes: Applications to Japan and the Mexican Subduction Zone (2023)
  • Author(s): Masuda Koki、Ide Satoshi
  • Journal Title: Journal of Geophysical Research: Solid Earth Volume: 128 Issue: 11
  • DOI: 10.1029/2023jb027311
  • Peer Reviewed / Open Access
• [Journal Article] Dynamic nucleation as a cascade-up of earthquakes depending on rupture propagation velocity (2023)
  • Author(s): Uemura Kansuke、Ide Satoshi、Aochi Hideo
  • Journal Title: Earth, Planets and Space Volume: 75 Issue: 1
  • DOI: 10.1186/s40623-023-01866-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Earthquake Magnitude With DAS: A Transferable Data‐Based Scaling Relation (2023)
  • Author(s): Yin Jiuxun、Zhu Weiqiang、Li Jiaxuan、Biondi Ettore、Miao Yaolin、Spica Zack J.、Viens Lo?c、Shinohara Masanao、Ide Satoshi、Mochizuki Kimihiro、Husker Allen L.、Zhan Zhongwen
  • Journal Title: Geophysical Research Letters Volume: 50 Issue: 10
  • DOI: 10.1029/2023gl103045
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Eight-year catalog of deep short-term slow slip events at the Nankai trough based on objective detection algorithm using strain and tilt records (2023)
  • Author(s): Yabe Suguru、Ochi Tadafumi、Matsumoto Norio、Itaba Satoshi、Kitagawa Yuichi、Matsuzawa Takanori
  • Journal Title: Earth, Planets and Space Volume: 75 Issue: 1
  • DOI: 10.1186/s40623-023-01769-9
  • Peer Reviewed / Open Access
• [Journal Article] Modifications of epidemic-type-aftershock-sequence models for characterizing diffusive shear slips of deep long-period earthquakes (2023)
  • Author(s): Aso Naofumi、Terai Nozomi
  • Journal Title: Geophysical Journal International Volume: 234 Issue: 2 Pages: 1254-1267
  • DOI: 10.1093/gji/ggad125
  • Peer Reviewed
• [Journal Article] Forecasting tectonic tremor activity using a renewal process model (2022)
  • Author(s): Ide Satoshi、Nomura Shunichi
  • Journal Title: Progress in Earth and Planetary Science Volume: 9 Issue: 1
  • DOI: 10.1186/s40645-022-00523-1
  • Peer Reviewed / Open Access
• [Journal Article] Spatiotemporal chaos of a one-dimensional thin elastic layer with the rate-and-state friction law (2022)
  • Author(s): Sumino Yutaka、Saito Takuya、Hatano Takahiro、Yamaguchi Tetsuo、Ide Satoshi
  • Journal Title: Physical Review Research Volume: 4 Issue: 4 Pages: 043115-043115
  • DOI: 10.1103/physrevresearch.4.043115
  • Peer Reviewed / Open Access
• [Journal Article] Potential applicability and limitations of radiation-corrected empirical Green's functions for point-source cases (2021)
  • Author(s): Shibata Ritsuya、Aso Naofumi、Oikawa Genki、Nakajima Junichi、Ide Satoshi
  • Journal Title: Geophysical Journal International Volume: 229 Issue: 2 Pages: 800-813
  • DOI: 10.1093/gji/ggab503
  • Peer Reviewed / Open Access
• [Journal Article] Empirical Low‐Frequency Earthquakes Synthesized From Tectonic Tremor Records (2021)
  • Author(s): Ide Satoshi
  • Journal Title: Journal of Geophysical Research: Solid Earth Volume: 126 Issue: 12
  • DOI: 10.1029/2021jb022498
  • Peer Reviewed / Open Access
• [Journal Article] Hypocenter Hotspots Illuminated Using a New Cross‐Correlation‐Based Hypocenter and Centroid Relocation Method (2021)
  • Author(s): Chang Ta‐Wei、Ide Satoshi
  • Journal Title: Journal of Geophysical Research: Solid Earth Volume: 126 Issue: 9
  • DOI: 10.1029/2021jb021991
  • Peer Reviewed / Open Access
• [Presentation] Slow and fast earthquakes and earthquake modeling (2025)
  • Author(s): S. Ide
  • Organizer: Slow-to-Fast Earthquake Workshop in Chile
  • Int'l Joint Research
• [Presentation] Introduction of slow earthquakes (2024)
  • Author(s): S. Ide
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research / Invited
• [Presentation] Spatiotemporal characteristics of tectonic tremors in the collisional orogen of Taiwan (2024)
  • Author(s): S. Ide, & K. Chen
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] Spatio-temporal slip distribution estimation of deep short-term SSEs in the Nankai Trough using strain, tilt, and GNSS data (2024)
  • Author(s): 矢部 優、落 唯史、松本 則夫、松澤孝紀
  • Organizer: Seismological Society of America annual meeting
  • Int'l Joint Research
• [Presentation] Detailed spatio-temporal comparison of SSE slip and tremor activities in the Nankai subduction zone (2024)
  • Author(s): 矢部 優、落 唯史、松本 則夫、松澤孝紀
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] Matched Filter Detection of Earthquakes near Izu Oshima (2024)
  • Author(s): 荒川 日南子・麻生 尚文
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] 波形インバージョン解の観測点分布依存性 (2024)
  • Author(s): 柴田 律也・麻生 尚文
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] Insights into the Mechanics of the Lower Crust from Focal Mechanisms of Low-Frequency Earthquakes on the San Andreas Fault (2024)
  • Author(s): 麻生 尚文・麻生 未季・D.R. Shelly・井出 哲
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] Slip-angle-based Existing Probability of Triple Junctions (2024)
  • Author(s): 藤沢 宏修・麻生 尚文
  • Organizer: 日本地球惑星科学連合 2024年大会
  • Int'l Joint Research
• [Presentation] Two new methods to monitor slow earthquakes (2024)
  • Author(s): S. Ide, K. Masuda, & S. Yano
  • Organizer: V Assembly of LACSC
  • Int'l Joint Research
• [Presentation] SSE滑り時空間分布の系統的解析(序報) (2024)
  • Author(s): 矢部 優、落 唯史、松本 則夫、板場 智史、北川 有一、松澤孝紀、井出哲
  • Organizer: SF地震学A03班研究集会
• [Presentation] GNSS・InSAR時系列解析に基づく中央構造線(四国東部)のジオメトリ推定 (2024)
  • Author(s): 下妻 康平、木下陽平、矢 部 優、落 唯史
  • Organizer: SF地震学 A03班 研究集会
• [Presentation] Initial and total rupture processes of earthquakes re-considering P-wave first motions (2024)
  • Author(s): S. Ide, & K. Yoshida
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2024
  • Int'l Joint Research
• [Presentation] Seismic slow-earthquake signals radiated from shear and extensional cracks in subduction melange (2024)
  • Author(s): 矢部 優、氏家 恒太郎
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2024
  • Int'l Joint Research
• [Presentation] Slow and fast earthquakes and earthquake modeling (2024)
  • Author(s): S. Ide
  • Organizer: 39th General Assembly of ESC
  • Int'l Joint Research
• [Presentation] 四国西部におけるスロースリップ発生頻度のモデル化 (2024)
  • Author(s): 加藤 寛人・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] プレート運動方向に基づく三重会合点の存在確率の評価 (2024)
  • Author(s): 藤沢 宏修・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 伊豆・小笠原諸島における島の形状とテクトニクス (2024)
  • Author(s): 濱名 萌・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 2023年に発生した伊豆大島近海の浅部における火山性群発地震 (2024)
  • Author(s): 荒川 日南子・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 修正ETASモデルによる四国西部における低周波地震の群発性解析 (2024)
  • Author(s): 下村 海渡・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] ETASパラメータのマグニチュード依存性 (2024)
  • Author(s): 石川 大智・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 真のb値を推定する再帰型ニューラルネットワークの構築 (2024)
  • Author(s): 麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 日本列島におけるScS波の走時解析 (2024)
  • Author(s): 福重 綜人・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] ビーチボールの模型による可視化 (2024)
  • Author(s): 伊倉 真論・麻生 尚文
  • Organizer: 日本地震学会 2024年度秋季大会
• [Presentation] 九州東部四万十帯槙峰層における掘削・地表調査 (2024)
  • Author(s): 矢部 優、木口 努、細野 日向子、大坪 誠
  • Organizer: 日本地質学会2024年 大会
• [Presentation] Geometry of Median Tectonic Line in eastern Shikoku based on GNSS and InSAR time-series analysis (2024)
  • Author(s): 下妻 康平、木下 陽平、矢部 優、落 唯史
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2024
  • Int'l Joint Research
• [Presentation] Characteristics and tectonic implications of deep tectonic tremors in Taiwan (2024)
  • Author(s): S. Ide, K. Chen, Y. Hua, & W. Peng
  • Organizer: AGU 2024
  • Int'l Joint Research
• [Presentation] Two new methods to monitor slow earthquakes in Mexico (2024)
  • Author(s): S. Ide, K. Masuda, S. Yano
  • Organizer: International Workshop on Science of Slow-to-Fast Earthquakes, Mexico
  • Int'l Joint Research
• [Presentation] Synthetic evaluation of constraint on non-double couple component in CMT analysis & application to real data (2024)
  • Author(s): Yabe, S., Imanishi, K., Takemura, S.
  • Organizer: International Workshop on Science of Slow-to-Fast Earthquakes, Mexico
  • Int'l Joint Research
• [Presentation] 歪・傾斜を利用したSSE解析 (2024)
  • Author(s): Yabe, S., Ochi, T., Matsumoto, N., Matsuzawa, T.
  • Organizer: 「地震活動の物理」研究集会
• [Presentation] Slow earthquake scaling revisited (2023)
  • Author(s): S. Ide, G. C. Beroza
  • Organizer: SSA Annual Meeting 2023
  • Int'l Joint Research
• [Presentation] DAS observations on the fiber-optical cables of JR Central and its application to seismological research (2023)
  • Author(s): S. Ide, M. Yoshimi, T. Enari, D. Taya, S. Iwata
  • Organizer: 日本地球惑星科学連合 2023年大会
  • Int'l Joint Research
• [Presentation] Slow earthquake scaling revisited (2023)
  • Author(s): S. Ide, G. C. Beroza
  • Organizer: 日本地球惑星科学連合 2023年大会
  • Int'l Joint Research
• [Presentation] Deep Mechanics along the San Andreas Fault through Focal Mechanisms of Low-Frequency Earthquakes near Parkfield (2023)
  • Author(s): Aso, N., M. Aso, D.R. Shelly, and S. Ide
  • Organizer: 日本地球惑星科学連合 2023年大会
  • Int'l Joint Research
• [Presentation] Observational evidence of cascading earthquake rupture with hierarchical structure in the Tohoku-Oki region, Japan (2023)
  • Author(s): S. Ide
  • Organizer: IUGG 2023
  • Int'l Joint Research
• [Presentation] Tectonic Tremors in Taiwan, 2012-2022 (2023)
  • Author(s): S. Ide, K. Chen
  • Organizer: International Joint WS on Slow-to-Fast Earthquakes 2023
  • Int'l Joint Research
• [Presentation] Evaluating uncertainties in CMT inversion to estimate non-double couple components of earthquakes (2023)
  • Author(s): Yabe, S., Imanishi, K., Takemura, S
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2023
  • Int'l Joint Research
• [Presentation] 槇峰メランジュにおける石英脈濃集帯が放出する地震波のモデル化の試み (2023)
  • Author(s): Yabe, S., Otsubo, M., Ujiie, K.
  • Organizer: 日本地質学会 2023
• [Presentation] 歪・傾斜・GNSSの統合解析による南海トラフ深部スロースリップの時空間滑り分布推定手法の開発 (2023)
  • Author(s): Yabe, S., Ochi, T., Matsumoto, N., Matsuzawa, T
  • Organizer: 日本測地学会 2023
• [Presentation] Collaborative study on slow earthquakes in Mexico and Japan (2023)
  • Author(s): S. Ide
  • Organizer: Third International Colloquium of Mexican and Japanese Studies: Global Challenges and Divided Societies
  • Int'l Joint Research
• [Presentation] Physics of fast and slow earthquakes (2023)
  • Author(s): S. Ide
  • Organizer: 9th International Tribology Conference
  • Int'l Joint Research / Invited
• [Presentation] Scaling fast and slow earthquakes (2023)
  • Author(s): S. Ide
  • Organizer: Cergese 2023 School on Subduction Zone Processes
  • Int'l Joint Research / Invited
• [Presentation] スロー地震とファスト地震と地震のモデル (2023)
  • Author(s): 井出哲
  • Organizer: 日本地震学会2023年秋季大会
• [Presentation] 槇峰メランジュにおける石英脈濃集帯が放出する地震波のモデル化の試み (2023)
  • Author(s): Yabe, S., Otsubo, M., Ujiie, K.
  • Organizer: 日本地震学会2023年秋季大会
• [Presentation] Slow earthquake scaling reconsidered as a boundary between distinct modes of rupture propagation (2023)
  • Author(s): S. Ide, G. C. Beroza
  • Organizer: AGU Fall Meeting 2023
  • Int'l Joint Research
• [Presentation] Long-term DAS observation on Shinkansen optical fiber and its application to natural earthquake observation (2023)
  • Author(s): Yoshimi, M., S. Ide, T. Enari, D. Taya, S. Iwata
  • Organizer: Slow-to-Fast Earthquake Workshop in Taiwan
  • Int'l Joint Research
• [Presentation] Deep Mechanics along the San Andreas Fault through Focal Mechanisms of Low-Frequency Earthquakes near Parkfield (2023)
  • Author(s): Aso, N., M. Aso, D.R. Shelly, and S. Ide
  • Organizer: Slow-to-Fast Earthquake Workshop in Taiwan
  • Int'l Joint Research
• [Presentation] Forecasting tectonic tremor activity using a renewal process model (2022)
  • Author(s): Ide, S., N. Nomura
  • Organizer: American Geophysical Union Fall Meeting 2022
  • Int'l Joint Research
• [Presentation] Objective SSE detection using tilt and strain data in the southwest Japan (2022)
  • Author(s): Yabe, S., T. Ochi, N. Matsumoto, and T. Matsuzawa
  • Organizer: American Geophysical Union Fall Meeting 2022
  • Int'l Joint Research
• [Presentation] Self-similar rupture process of deep low frequency earthquakes (2022)
  • Author(s): Oikawa, G. and N. Aso
  • Organizer: American Geophysical Union Fall Meeting 2022
  • Int'l Joint Research
• [Presentation] Direct Evidence of Strike-Slip Motion for Low-Frequency Earthquake near Parkfield (2022)
  • Author(s): Aso, N., M. Aso, D.R. Shelly, and S. Ide
  • Organizer: American Geophysical Union Fall Meeting 2022
  • Int'l Joint Research
• [Presentation] Resolving slip directions in the finite fault inversion with the radiation-corrected empirical Green’s function (2022)
  • Author(s): Shibata, R. and N. Aso
  • Organizer: American Geophysical Union Fall Meeting 2022
  • Int'l Joint Research
• [Presentation] Physics of fast and slow earthquakes and Science of Slow-to-Fast Earthquakes project (2022)
  • Author(s): Ide, S.
  • Organizer: Chile-Japan Academic Forum 2022
  • Int'l Joint Research
• [Presentation] テクトニック微動活動の予測実験：更新過程モデルを用いて (2022)
  • Author(s): 井出哲・野村俊一
  • Organizer: 日本地震学会2022年度秋季大会
• [Presentation] Self-consistent setting of heterogeneity with slip-weakening friction law (2022)
  • Author(s): Nishiyama, Y. and N. Aso
  • Organizer: 日本地震学会2022年度秋季大会
• [Presentation] Direct Evidence of Strike-Slip Motion for Low-Frequency Earthquake near Parkfield (2022)
  • Author(s): Aso, N., M. Aso, D.R. Shelly, and S. Ide
  • Organizer: 日本地震学会2022年度秋季大会
• [Presentation] Do deep low frequency earthquakes have the similar rupture growth process to ordinary earthquakes? (2022)
  • Author(s): Oikawa, G. and N. Aso
  • Organizer: 日本地震学会2022年度秋季大会
• [Presentation] 歪・傾斜データによる客観的SSE検出とGNSSで検知される四国東部SSEの検証 (2022)
  • Author(s): 矢部優・落唯史・松本則夫・松澤孝紀
  • Organizer: 日本測地学会講演会
• [Presentation] Scaling fast and slow earthquakes (2022)
  • Author(s): Ide, S.
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2022
  • Int'l Joint Research
• [Presentation] Synthetic tests of joint CMT analysis using translation and strain data (2022)
  • Author(s): Yabe, S., and K. Imanishi
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2022
  • Int'l Joint Research
• [Presentation] Diffusional shear slip as the common mechanism for tectonic low-frequency earthquakes and volcanic deep-long-period earthquakes (2022)
  • Author(s): Aso, N.
  • Organizer: International Joint Workshop on Slow-to-Fast Earthquakes 2022
  • Int'l Joint Research
• [Presentation] Science of Slow-to-Fast Earthquakes (2022)
  • Author(s): Ide, S., Y. Hamada, A. Yamaguchi, Y. Ito, Y. Tanaka, A. Kato, and T. Matsuzawa
  • Organizer: 2022 SAGE/GAGE Community Science Workshop
  • Int'l Joint Research
• [Presentation] Getting started on Science of Slow-to-Fast Earthquakes project (2022)
  • Author(s): Ide, S., Y. Hamada, A. Yamaguchi, Y. Ito, Y. Tanaka, A. Kato, and T. Matsuzawa
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Preliminary forecasting model for tectonic tremor activity using a renewal process (2022)
  • Author(s): Ide, S., N. Nomura
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Investigation of slip diversity containing slip direction using slip inversion even with empirical Green’s functions (2022)
  • Author(s): Shibata, R. and N. Aso
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Crustal Fluids Responsible for Diffusional Characteristics of Deep Volcanic Long-Period Earthquake (2022)
  • Author(s): Aso, N.
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Scaling relationship of low frequency earthquakes (LFEs) between duration and radiated seismic energy (2022)
  • Author(s): Oikawa, G. and N. Aso
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Objective Estimation of Mechanical Plate Boundary by Neural Network (2022)
  • Author(s): Nagai, E. and N. Aso
  • Organizer: Japan Geoscience Union Meeting 2022
  • Int'l Joint Research
• [Presentation] Empirical low-frequency earthquakes synthesized from tectonic tremor records (2022)
  • Author(s): Ide, S.
  • Organizer: Seismological Society of America Annual Meeting 2022
  • Int'l Joint Research
• [Presentation] Scientific achievements from onshore observation:Slow earthquakes in Mexico (2022)
  • Author(s): S. Ide
  • Organizer: SATREPS Mexico Final Workshop
  • Int'l Joint Research
• [Presentation] Very broadband strain-rate measurements along a submarine fiber-optic cable off Cape Muroto, Nankai subduction zone, Japan (2021)
  • Author(s): S. Ide, E. Araki, H. Matsumoto
  • Organizer: AGU Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] Potential applicability of the radiation-corrected empirical Green’s function to the multi-time-window method (2021)
  • Author(s): R.Shibata, N. Aso, G. Oikawa, J. Nakajima, and S. Ide
  • Organizer: AGU Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] The relationship between focal mechanisms of volcanic deep low frequency earthquakes and spatiotemporal stress pattern in Northeast Japan (2021)
  • Author(s): G. Oikawa, N. Aso, and J. Nakajima
  • Organizer: AGU Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] Extracting Diffusional Characteristics from Stationary Deep Long-Period Events (2021)
  • Author(s): N. Aso
  • Organizer: AGU Fall Meeting 2021
  • Int'l Joint Research
• [Presentation] テクトニック微動から低周波地震を抽出する (2021)
  • Author(s): 井出 哲
  • Organizer: 日本地震学会 2021年度秋季大会
• [Presentation] 東北日本の応力場の時空間変化によって引き起こされる火山深部低周波地震 (2021)
  • Author(s): 及川 元己・麻生 尚文・中島 淳一
  • Organizer: 日本地震学会 2021年度秋季大会
• [Presentation] マイグレーションの見えない点クラスターから拡散的な特徴を抽出する (2021)
  • Author(s): 麻生 尚文
  • Organizer: 日本地震学会 2021年度秋季大会
• [Presentation] Broadband spectrum of slow earthquakes, 3rd Cargese school on Earthquakes (2021)
  • Author(s): S. Ide
  • Organizer: Earthquakes 3rd Edition
  • Int'l Joint Research / Invited
• [Presentation] Broadband slow earthquakes (2021)
  • Author(s): S. Ide
  • Organizer: International Joint Workshop on Slow Earthquakes 2021
  • Int'l Joint Research
• [Presentation] Very broadband strain-rate measurements along a submarine fiber-optic cable off Cape Muroto, Nankai subduction zone, Japan (2021)
  • Author(s): S. Ide, E. Araki, H. Matsumoto
  • Organizer: 日本地球惑星科学連合 2021年大会
  • Int'l Joint Research
• [Presentation] Seismicity of Deep Long-Period events in Eastern Shimane Revealed by Campaign Observations (2021)
  • Author(s): 麻生 尚文・寺井 望
  • Organizer: 日本地球惑星科学連合 2021年大会
  • Int'l Joint Research
• [Presentation] 滑りインバージョンにおける放射パターンを補正した経験的グリーン関数 (2021)
  • Author(s): 柴田 律也・及川 元己・麻生 尚文・中島 淳一・井出 哲
  • Organizer: 日本地球惑星科学連合 2021年大会
  • Int'l Joint Research
• [Book] 地震学 (2024)
  • Author(s): 井出哲
  • Total Pages: 396
  • Publisher: 講談社
  • ISBN: 9784065356395