Estimation of the factor determining interplate coupling from repeating earthquakes

• Project/Area Number: 23740328
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Tohoku University
• Principal Investigator: UCHIDA Naoki 東北大学, 理学(系)研究科(研究院), 助教 (80374908)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: プレート境界地震 / 繰り返し地震 / 非地震性すべり / プレート間カップリング / 沈み込み帯 / 小繰り返し地震 / アスペリティ / 応力降下量

Research Abstract

I have developed a method that can select medium-sized repeating earthquake by using rupture size and relative location of Kamaishi-oki earthquakes, then applied it to the NE Japan seismicity before and after the Tohoku-oki earthquake. The result show not only small repeating earthquake but also medium-sized repeating earthquakes are distributed largely outside of M7 and Tohoku-oki earthquake' s slip areas. The selected repeaters were also used to refine the slip rate and coupling estimation on the plate boundary. The stress drop of interplate earthquakes are also determined by using the repeaters. It show that the earthquakes in the large slip area for the 2011 Tohoku-oki earthquake have relatively small stress drop before the Tohoku-oki earthquake. I also found phenomena that the magnitude of repeating earthquake become larger after the Tohoku-oki earthquake.

Research Products

• [Journal Article] Pre-and post-seismic slow slip surrounding the 2011 Tohoku-oki earthquake rupture (2013)
  • Author(s): Uchida, N., and T.Matsuzawa
  • Journal Title: Earth Planet. Sci. Lett. Volume: 374 Pages: 81-91
  • DOI: 10.1016/j.epsl.2013.05.021
  • Peer Reviewed
• [Journal Article] Complex slab structure and arc magmatism beneath the Japanese Islands (2013)
  • Author(s): Hasegawa, A., J. Nakajima, T. Yanada, N. Uchida, T. Okada, D. Zhao, T. Matsuzawa, and N. Umino
  • Journal Title: Journal of Asian Earth Sciences Volume: 78 Pages: 277-290
  • Peer Reviewed
• [Journal Article] Seismic attenuation beneath northeastern Japan : Constraints on mantle dynamics and arc mgmatism (2013)
  • Author(s): Nakajima, J., S. Hada, E. Hayami, N. Uchida, A. Hasegawa, S. Yoshioka, T. Matsuzawa, and N. Umino
  • Journal Title: J. Geophys. Res Volume: 118 Pages: 5838-5855
  • Peer Reviewed
• [Journal Article] Intermediate-depth earthquakes facilitated by eclogitization-related stresses (2013)
  • Author(s): Nakajima, J., N. Uchida, T. Shiina, A. Hasegawa, B. R. Hacker, and S. H. Kirby
  • Journal Title: Geology Volume: 41 Pages: 659-662
  • Peer Reviewed
• [Journal Article] Seismic attenuation beneath northeastern Japan: Constraints on mantle dynamics and arc magmatism (2013)
  • Author(s): Nakajima, J., Hada, S., Hayami, E., Uchida, N., Hasegawa, A., Yoshioka, S., Matsuzawa, T., & Umino, N.
  • Journal Title: Journal of Geophysical Research: Solid Earth Volume: 118 Issue: 11 Pages: 5838-5855
  • DOI: 10.1002/2013jb010388
  • Peer Reviewed
• [Journal Article] Source parameters of microearthquakes on an interplate asperity off Kamaishi, NE Japan over two earthquake cycles (2012)
  • Author(s): Uchida, N., T. Matsuzawa, W. L. Ellsworth, K. Imanishi, K. Shimamura, and A. Hasegawa
  • Journal Title: Geophys. J. Int Volume: 189 Pages: 999-1014
  • Peer Reviewed
• [Journal Article] Statistical forecasts and tests for small interplate repeating earthquakes along the Japan Trench (2012)
  • Author(s): Okada, M., N. Uchida, and S. Aoki
  • Journal Title: Earth Planets Space Volume: 64 Issue: 8 Pages: 703-715
  • DOI: 10.5047/eps.2011.02.008
  • NAID: 10031118072
  • Peer Reviewed
• [Journal Article] Fixed recurrence and slip models better predict earthquake behavior than the time- and slip-predictable models: 1. Repeating earthquakes (2012)
  • Author(s): Rubinstein, J. L., W. L. Ellsworth, K. H. Chen, and N. Uchida
  • Journal Title: J. Geophys. Res. Volume: 117 Issue: B2
  • DOI: 10.1029/2011jb008724
  • Peer Reviewed
• [Journal Article] Source parameters of microearthquakes on an interplate asperity off Kamaishi, NE Japan over two earthquake cycles (2012)
  • Author(s): Uchida, N., T. Matsuzawa, W. L. Ellsworth, K. Imanishi, K. Shimamura, and A. Hasegawa
  • Journal Title: Geophys. J. Int. Volume: 189 Issue: 2 Pages: 999-1014
  • DOI: 10.1111/j.1365-246x.2012.05377.x
  • Peer Reviewed
• [Journal Article] Coupling coefficient, hierarchical structure, and earthquake cycle for the source area of the 2011 Tohoku earthquake inferred from small repeating earthquake data (2011)
  • Author(s): Uchida, N., T.Matsuzawa
  • Journal Title: Earth Planets Space Volume: 63 Issue: 7 Pages: 675-679
  • DOI: 10.5047/eps.2011.07.006
  • Peer Reviewed
• [Journal Article] Similarities and Differences in the Rupture Process of the M～4.8 Repeating-Earthquake Sequence off Kamaishi, Northeast Japan : Comparison between the 2001 and 2008 Events (2011)
  • Author(s): Shimamura, K., T. Matsuzawa, T. Okada, N. Uchida, T. Kono, and A. Hasegawa
  • Journal Title: Bull. Seismol. Soc. Am Volume: 101(5) Pages: 2355-2368
  • Peer Reviewed
• [Journal Article] Similarities and Differences in the Rupture Process of the M~4.8 Repeating-Earthquake Sequence off Kamaishi, Northeast Japan: Comparison between the 2001 and 2008 Events (2011)
  • Author(s): Shimamura, K., T. Matsuzawa, T. Okada, N. Uchida, T. Kono, and A. Hasegawa
  • Journal Title: Bull. Seismol. Soc. Am. Volume: 101(5) Pages: 2355-2368
  • Peer Reviewed
• [Presentation] The Great 1933 Sanriku-oki Earthquake : Possible Compound Rupture of Outer Trench Slope and Triggered Interplate Seismicity (2013)
  • Author(s): Uchida, N., S. H. Kirby, N. Umino, R. Hino, and E. A. Okal
  • Organizer: AGU 2013 Fall Meeting
  • Place of Presentation: San Francisco, Moscone Center, United States
  • Year and Date: 2013-12-12
• [Presentation] 東北日本沈み込み帯における周期的スロースリップ (2013)
  • Author(s): 内田直希・飯沼卓史・R. M. Nadeau・R. Burgmann・日野亮太
  • Organizer: 日本地震学会
  • Place of Presentation: 横浜, 神奈川県民ホール・産業貿易センター
  • Year and Date: 2013-10-07
• [Presentation] Slow slip and repeating earthquakes in the northeastern Japan subduction zone (2013)
  • Author(s): Uchida, N
  • Organizer: The summer school on Earthquake Science
  • Place of Presentation: Hakone, Laforet Gora
  • Year and Date: 2013-10-07
  • Invited
• [Presentation] 中小地震により推定したプレート間固着状態と東北地方太平洋沖地震 (2013)
  • Author(s): 内田直希
  • Organizer: 防災科学技術研究所セミナー
  • Place of Presentation: つくば市, 防災科学技術研究所
  • Year and Date: 2013-06-17
• [Presentation] プレート境界の小地震の活動と東北地方太平洋沖地震 (2013)
  • Author(s): 内田直希
  • Organizer: 地殻ダイナミクスの解明-地球物理学と地質学の知見の総合-
  • Place of Presentation: 阿武山合宿研究会, 大阪府, 京都大学
  • Year and Date: 2013-03-23
• [Presentation] 準静的滑りの時空間変化に基づく地震発生切迫度評価の研究 (2013)
  • Author(s): 内田直希
  • Organizer: 「地震及び火山噴火予知のための観測研究計画」平成24年度成果報告シンポジウム
  • Place of Presentation: 東京, 東京大学武田先端知ビル5F 武田ホール
  • Year and Date: 2013-03-06
• [Presentation] 3.11 はどんな地震だったか? 地震・地殻変動観測網がとらえた地震前・地震時・地震後の変動 (2013)
  • Author(s): 内田直希
  • Organizer: サイエンスカフェ・スペシャル with JAMSTEC
  • Place of Presentation: 仙台,東北大学
  • Year and Date: 2013-02-11
• [Presentation] 東北日本沈み込み帯における周期的スロースリップ (2013)
  • Author(s): 内田直希・飯沼卓史・R. M. Nadeau・R. Burgmann・日野亮太
  • Organizer: 日本地震学会
  • Place of Presentation: 神奈川県民ホール、産業貿易センター（横浜市）
• [Presentation] The Great 1933 Sanriku-oki Earthquake: Possible Compound Rupture of Outer Trench Slope and Triggered Interplate Seismicity (2013)
  • Author(s): Uchida, N., S. H. Kirby, N. Umino, R. Hino, and E. A. Okal
  • Organizer: AGU 2013 Fall Meeting
  • Place of Presentation: Moscone Center, San Francisco （アメリカ）
• [Presentation] Strong near-trench locking and its temporal change in the rupture area of the 2011 Tohoku-oki earthquake estimated from cumulative slip and slip vectors of interplate earthquakes (2012)
  • Author(s): Uchida, N., A. Hasegawa, and T. Matsuzawa
  • Organizer: AGU 2012 Fall meeting
  • Place of Presentation: San Francisco, Moscone Center, United States
  • Year and Date: 2012-12-05
• [Presentation] 2011年東北地方太平洋沖地震前後のプレート境界すべり-地震学的データからの推定- (2012)
  • Author(s): 内田直希・松澤暢・長谷川昭
  • Organizer: 日本測地学会第118回講演会
  • Place of Presentation: 仙台, 仙台市福祉プラザ
  • Year and Date: 2012-10-31
• [Presentation] 2011年東北地方太平洋沖地震前の海溝近傍の固着状況-プレート境界地震のすべり方向からの推定- (2012)
  • Author(s): 内田直希・長谷川昭・松澤暢
  • Organizer: 日本地震学会2012年度秋季大会
  • Place of Presentation: 函館, 函館市民会館
  • Year and Date: 2012-10-16
• [Presentation] Interplate coupling and its temporal change associated with the 2011 Tohoku-Oki earthquake (2012)
  • Author(s): Uchida, N., T. Matsuzawa, and A. Hasegawa
  • Organizer: 2012 Global COE Final Symposium : Achievements of G-COE Program for Earth and Planetary Dynamics and the Future Perspective
  • Place of Presentation: Sendai, Sendai City War Reconstruction Memorial Hall
  • Year and Date: 2012-09-25
  • Invited
• [Presentation] 小繰り返し解析による2011年東北地方太平洋沖地震前後の準静的すべりの推定 (2012)
  • Author(s): 内田直希
  • Organizer: 地震火山グループ研究会「東北地方太平洋沖地震前に起こっていたこと」
  • Place of Presentation: 宇治, 京都大学防災研究所
  • Year and Date: 2012-06-01
  • Invited
• [Presentation] Repeating earthquake activity before and after the 2011Tohoku earthquake (2012)
  • Author(s): Uchida, N
  • Organizer: International symposium on statistical modeling and real-time probability forecasting for earthquakes
  • Place of Presentation: Tachikawa, Institute of Statistical Mathematics
  • Year and Date: 2012-03-12
  • Invited
• [Presentation] Quasi-static Slip Before and After the 2011 Tohoku Earthquake Estimated from Small Repeating Earthquakes (2011)
  • Author(s): Uchida, N., and T. Matsuzawa
  • Organizer: AGU 2011 Fall Meeting
  • Place of Presentation: San Francisco, Moscone Center, United States
  • Year and Date: 2011-12-05
  • Invited
• [Presentation] 東北地方太平洋沖地震前後の繰り返し地震活動とプレート境界すべり (2011)
  • Author(s): 内田直希
  • Organizer: 日本海溝- 東北日本- 日本海システム研究ワークショップ
  • Place of Presentation: 東京都, JAMSTEC 東京事務所
  • Year and Date: 2011-11-25
• [Presentation] 繰り返し地震解析による東北地方太平洋沖地震前後のプレート境界すべりの時空間変化 (2011)
  • Author(s): 内田直希
  • Organizer: 東京大学地震研究所金曜セミナー
  • Place of Presentation: 東京都, 東京大学地震研究所
  • Year and Date: 2011-11-24
• [Presentation] 繰り返し地震データから推定した2011年東北地方太平洋沖地震前後の準静的すべり (2011)
  • Author(s): 内田直希・松澤暢
  • Organizer: 日本地震学会2011年秋季大会
  • Place of Presentation: 静岡, 静岡県コンベンションアーツセンター・グランシップ
  • Year and Date: 2011-10-12
• [Presentation] 小繰り返し地震データから推定した東北地方太平洋沖地震震源域周辺のカップリング率 (2011)
  • Author(s): 内田直希・松澤暢
  • Organizer: 東北地方太平洋沖地震緊急研究成果報告シンポジウム
  • Place of Presentation: トラストシティカンファレンス・仙台
  • Year and Date: 2011-08-20
  • Invited
• [Presentation] コーダスペクトル比法により推定した東北日本沈み込み帯のプレート境界地震の応力降下量 (2011)
  • Author(s): 内田直希・松澤暢
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2011-05-22
• [Presentation] 地震及び火山噴火予知のための観測研究計画 (2011)
  • Author(s): 内田直希
  • Organizer: 平成22年度成果報告シンポジウム
  • Place of Presentation: 東京, 東京大学地震研究所
  • Year and Date: 2011-03-03
• [Presentation] Quasi-static Slip Before and After the 2011 Tohoku Earthquake Estimated from Small Repeating Earthquakes (2011)
  • Author(s): Uchida, N., and T. Matsuzawa
  • Organizer: AGU 2011 Fall Meeting
  • Place of Presentation: Moscone Center, San Francisco, United States of America
• [Presentation] 繰り返し地震データから推定した2011年東北地方太平洋沖地震前後の準静的すべり (2011)
  • Author(s): 内田直希・松澤暢
  • Organizer: 日本地震学会2011年秋季大会
  • Place of Presentation: 静岡県コンベンションアーツセンター・グランシップ
• [Presentation] Strong near-trench locking and its temporal change in the rupture area of the 2011 Tohoku-oki earthquake estimated from cumulative slip and slip vectors of interplate earthquakes
  • Author(s): Uchida, N., A. Hasegawa, and T. Matsuzawa
  • Organizer: AGU 2012 Fall meeting
  • Place of Presentation: Moscone Center, San Francisco, United States of America
• [Presentation] Interplate coupling associated with the 2011 Tohoku-Oki earthquake estimated from cumulative slip and slip vectors of interplate earthquakes
  • Author(s): Uchida, N.
  • Organizer: The Second International CORSSA (the Community Online Resource for Statistical Seismicity Analysis) Workshop
  • Place of Presentation: Tachikawa, Japan
  • Invited
• [Presentation] Interplate coupling and its temporal change associated with the 2011 Tohoku-Oki earthquake
  • Author(s): Uchida, N., T. Matsuzawa, A. Hasegawa
  • Organizer: 2012 Global COE Final Symposium: Achievements of G-COE Program for Earth and Planetary Dynamics and the Future Perspective
  • Place of Presentation: Sendai, Japan
  • Invited
• [Presentation] Repeating earthquake activity before and after the 2011Tohoku earthquake
  • Author(s): Uchida, N.
  • Organizer: International symposium on statistical modeling and real-time probability forecasting for earthquakes
  • Place of Presentation: Tachikawa, Japan
  • Invited
• [Presentation] 2011年東北地方太平洋沖地震前の海溝近傍の固着状況－プレート境界地震のすべり方向からの推定－
  • Author(s): 内田直希, 長谷川昭, 松澤暢
  • Organizer: 日本地震学会2012年度秋季大会
  • Place of Presentation: 函館，北海道
• [Presentation] 2011東北地方太平洋沖地震震源域の地震活動特性～釜石沖地震との比較を基にして
  • Author(s): 内田 直希, 松澤 暢
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ，千葉
• [Presentation] 2011年東北地方太平洋沖地震前後のプレート境界すべり－地震学的データからの推定－
  • Author(s): 内田直希, 松澤暢, 長谷川昭
  • Organizer: 日本測地学会第118回講演会
  • Place of Presentation: 仙台，宮城
• [Remarks] 内田 直希
  • URL: http://www.aob.geophys.tohoku.ac.jp/~uchida/
• [Remarks] 釜石沖地震アスペリティでの２つの地震サイクルにわたる地震活動
  • URL: http://www.aob.geophys.tohoku.ac.jp/~uchida/page_1.html