Effective observation distribution toward higher detectability of megathrust earthquakes focusing on off Tokachi and off Miyagi

• Project/Area Number: 23710212
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster science
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: ARIYOSHI Keisuke 独立行政法人海洋研究開発機構, 地震津波・防災研究プロジェクト, 技術研究副主任 (20436075)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 海溝型巨大地震 / 海底地殻変動 / 浅部ゆっくり地震 / 海洋変動 / モニタリング / 東北地方太平洋沖地震 / アスペリティモデル / 連鎖破壊

Research Abstract

We performed numerical modeling of megathrust earthquakes with chain reaction of multi asperities including slow earthquakes.
From this study, (i) we found that the following earthquake of a coupled earthquake is amplified for co-seismic slip in case of short time delay and for pre- and post-seismic slip in case of long-time delay. (ii) We also pointed out that shallow slow earthquake is expected to be active on the outer rim of strong coupling generating megathrust earthquake. (iii) Levelling change of shallow slow earthquake may be detectable for seafloor pressure gauge by subtracting stack among observation points of the same node from original data at each point.
These results have been published in the international geoscience journals and presented for the several international meetings as invited talk.

Research Products

• [Journal Article] A trial derivation of seismic plate coupling by focusing on the activity of shallow slow earthquakes (2014)
  • Author(s): Ariyoshi, K., T. Matsuzawa, R. Hino, A. Hasegawa, T. Hori, R. Nakata, Y. Kaneda
  • Journal Title: Earth, Planets and Space Volume: (in press) Issue: 1
  • DOI: 10.1186/1880-5981-66-55
  • Peer Reviewed
• [Journal Article] 超低周波地震の活動に基づくプレート間固着の推定 (2014)
  • Author(s): 有吉慶介・松澤暢・日野亮太・金田義行
  • Journal Title: SENAC Volume: vol.47,No.1 Pages: 29-34
  • NAID: 120006576484
• [Journal Article] A trial derivation of seismic plate coupling by focusing on the activity of shallow slow earthquakes (2014)
  • Author(s): Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Takane Hori, Ryoko Nakata, Yoshiyuki Kaneda
  • Journal Title: Earth, Planets and Space Volume: -
  • Peer Reviewed
• [Journal Article] The detectability of shallow slow earthquakes by the Dense Oceanfloor Network system for Earthquakes and Tsunamis (DONET) in Tonankai district, Japan (2013)
  • Author(s): Ariyoshi, K., R. Nakata, T. Matsuzawa, R. Hino, T. Hori, A. Hasegawa, and Y. Kaneda
  • Journal Title: Mar. Geophys. Res. Volume: Special Issue Issue: 3 Pages: 1-16
  • DOI: 10.1007/s11001-013-9192-6
  • Peer Reviewed
• [Journal Article] A trial estimation of frictional properties from perturbed repeating earthquakes (2013)
  • Author(s): Ariyoshi, K., T. Matsuzawa, R. Hino, A. Hasegawa, Y. Kaneda
  • Journal Title: Proceedings of the 11th Society of Exploration Geophysicists of Japan International Symposium Pages: 415-417
  • DOI: 10.1190/segj112013-105
  • Peer Reviewed
• [Journal Article] Migration process of very low-frequency events based on a chain-reaction model and its application to the detection of preseismic slip for megathrust earthquakes (2012)
  • Author(s): Ariyoshi, K., T.Matsuzawa, J.-P.Ampuero, R.Nakata, T.Hori, Y.Kaneda, R.Hino, A.Hasegawa
  • Journal Title: Earth Planets Space Volume: 64 Issue: 8 Pages: 693-702
  • DOI: 10.5047/eps.2010.09.003
  • NAID: 10031118071
  • Peer Reviewed
• [Journal Article] Frictional Characteristics in Deeper Part of Seismogenic Transition Zones on a Subduction Plate Boundary (2012)
  • Author(s): Keisuke Ariyoshi and Yoshiyuki Kaneda
  • Journal Title: Earthquake Research and Analysis - Seismology, Seismotectonic and Earthquake Geology Volume: ISBN:978-953-307-991-2 Pages: 105-124
  • DOI: 10.5772/28884
  • ISBN: 9789533079912
  • Peer Reviewed
• [Journal Article] 海溝付近で発生する浅部ゆっくり地震の特徴 (2011)
  • Author(s): 有吉慶介・堀高峰・中田令子・金田義行・ Jean-Paul Ampuero・松澤暢・日野亮太・長谷川昭
  • Journal Title: SENAC Volume: vol.44,No.4 Pages: 33-46
  • NAID: 120006560309
• [Journal Article] Effect of Small Asperities on Tremor Migration at the Edge of Large Asperities Investigated by 3-D Numerical Simulation of a Subduction Plate Boundary (2011)
  • Author(s): Ariyoshi, K., T. Hori, J.-P. Ampuero, Y. Kaneda, T. Matsuzawa, R. Nakata, A. Hasegawa
  • Journal Title: Advances in Geosciences Volume: vol.26, (in press)
  • Peer Reviewed
• [Journal Article] 東北地方太平洋沖地震・スマトラ島沖地震における連動型地震の考察 (2011)
  • Author(s): 有吉慶介,松澤暢,矢部康男,加藤尚之,日野亮太,長谷川昭,金田義行
  • Journal Title: JAMSTEC Report of Research and Development Volume: vol.13
  • NAID: 130001293353
  • Peer Reviewed
• [Journal Article] Consideration on the 2011 off the Pacific Coast of Tohoku Earthquake and the 2004 Sumatra Earthquake (2011)
  • Author(s): 有吉 慶介・松澤 暢・矢部 康男・加藤 尚之・日野 亮太・長谷川 昭・金田 義行
  • Journal Title: JAMSTEC Report of Research and Development Volume: 13 Pages: 17-33
  • DOI: 10.5918/jamstecr.13.17
  • NAID: 130001293353
  • ISSN: 1880-1153, 2186-358X
  • Peer Reviewed
• [Presentation] A trial estimation of seismic coupling and crustal deformation by focusing on shallow slow earthquakes (2014)
  • Author(s): Ariyoshi, K., T. Matsuzawa, R. Hino, A. Hasegawa, T. Hori, R. Nakata, Y. Kaneda
  • Organizer: Geofluid-3, O1-05
  • Place of Presentation: 東京 ,東京工業大学大岡山キャンパス
  • Year and Date: 2014-02-28
  • Invited
• [Presentation] The detectability of slow earthquakes in shallower part of subduction zone around Tonankai earthquake by the Dense Oceanfloor Network system for Earthquakes and Tsunamis (DONET) (2013)
  • Author(s): Ariyoshi, K., R. Nakata, T. Hori, Y. Kaneda, T. Matsuzawa, R. Hino, A. Hasegawa
  • Organizer: American Geophysical Union Fall Meeting, G14A-02
  • Place of Presentation: Moscone Center, San Francisco, USA
  • Year and Date: 2013-12-09
  • Invited
• [Presentation] Geodetic characteristic of the postseismic deformation following the interplate large earthquake along the Japan Trench (2013)
  • Author(s): Ohta, Y., R. Hino, K. Ariyoshi (other 8 co-authors)
  • Organizer: American Geophysical Union Fall Meeting, G31C-05
  • Place of Presentation: Moscone Center, San Francisco, USA
  • Year and Date: 2013-12-09
  • Invited
• [Presentation] A trial estimation of frictional properties and generation process of temporal activity change based on perturbed repeating-earthquakes (2013)
  • Author(s): Ariyoshi, K., Y. Kaneda, T. Matsuzawa, R. Hino, A. Hasegawa
  • Organizer: The 11th Society of Exploration Geophysicists of Japan, International Symposium, P26
  • Place of Presentation: 横浜,新横浜プリンスホテル
  • Year and Date: 2013-11-18
• [Presentation] 小繰り返し地震震源域における地震活動の変化から推定された摩擦構成則と地震発生過程 (2013)
  • Author(s): 有吉慶介・金田義行・松澤暢・日野亮太・長谷川昭
  • Organizer: 2013年度日本地震学会秋季大会 , P3-44
  • Place of Presentation: 横浜, 神奈川県民ホール
  • Year and Date: 2013-10-08
• [Presentation] 浅部ゆっくり地震に伴う地殻変動の検出可能性 (2013)
  • Author(s): 有吉慶介・中田令子・堀高峰・金田義行・松澤暢・日野亮太・長谷川昭
  • Organizer: 日本地球惑星科学連合2013年大会, SCG63-P12
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2013-05-22
• [Presentation] 海溝型巨大地震震源域における浅部ゆっくり地震の特徴 (2013)
  • Author(s): 有吉慶介・堀高峰・中田令子・金田義行・松澤暢・日野亮太・長谷川昭
  • Organizer: 研究集会「スロー地震の発生メカニズム解明を目指して」
  • Place of Presentation: 東京, 東京大学地震研究所
  • Year and Date: 2013-03-29
• [Presentation] 海溝型巨大地震震源域で予想される浅部ゆっくり地震の特徴 (2013)
  • Author(s): 有吉慶介・堀高峰・中田令子・金田義行・松澤暢・日野亮太・長谷川昭
  • Organizer: 地殻流体研究会 2013
  • Place of Presentation: 伊豆 ,ラフォーレ修善寺
  • Year and Date: 2013-03-04
• [Presentation] 海溝型巨大地震震源域における浅部ゆっくり地震の特徴 (2012)
  • Author(s): 有吉慶介・堀高峰・中田令子・金田義行・松澤暢・日野亮太・長谷川昭
  • Organizer: 2012年度日本地震学会秋季大会, P3-44
  • Place of Presentation: 函館, 函館市民会館
  • Year and Date: 2012-10-19
• [Presentation] 摩擦特性に依存する小繰り返し地震の揺らぎ (2012)
  • Author(s): 有吉慶介・松澤暢・日野亮太・長谷川昭・金田義行
  • Organizer: 日本地球惑星科学連合2012年大会, SCG74-P01
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2012-05-24
• [Presentation] Application of vector-type super computer to understanding giant earthquakes and aftershocks on subduction plate boundaries (2012)
  • Author(s): K. Ariyoshi
  • Organizer: 15th Workshop on Sustained Simulation Performance
  • Place of Presentation: 仙台, 東北大学
  • Year and Date: 2012-03-22
  • Invited
• [Presentation] Application of vector-type super computer to understanding giant earthquakes and aftershocks on subduction plate boundaries (2012)
  • Author(s): Keisuke Ariyoshi
  • Organizer: Workshop on Sustained Simulation Performance(招待講演)
  • Place of Presentation: 東北大学．仙台
• [Presentation] 海溝型巨大地震震源域周辺における浅部ゆっくり地震の特徴 (2011)
  • Author(s): 有吉慶介・堀高峰・中田令子・金田義行・ Jean-Paul Ampuero・松澤暢・日野亮太・長谷川昭
  • Organizer: 2011年度日本地震学会秋季大会, P3-44
  • Place of Presentation: 静岡 ,静岡県コンベンションアーツセンター
  • Year and Date: 2011-11-14
• [Presentation] 数値シミュレーションから予測される浅部低周波イベントの特徴 (2011)
  • Author(s): 有吉慶介・松澤暢・堀高峰・中田令子・金田義行・ Jean-Paul Ampuero・日野亮太・長谷川昭
  • Organizer: 日本地球惑星科学連合2011年大会, SCG060-20
  • Place of Presentation: 千葉 ,幕張メッセ
  • Year and Date: 2011-05-25
• [Presentation] すべりと応力場に及ぼす断層セグメント間の相互作用 (2011)
  • Author(s): 有吉慶介 ,松澤暢,矢部康男,加藤尚之,日野亮太 ,長谷川昭 ,金田義行
  • Organizer: 日本地球惑星科学連合2011年大会, SS035-38
  • Place of Presentation: 千葉, 幕張メッセ
  • Year and Date: 2011-05-24
• [Presentation] すべりと応力場に及ぼす断層セグメント間の相互作用 (2011)
  • Author(s): 有吉 慶介・松澤 暢・矢部 康男・加藤 尚之・日野 亮太・長谷川 昭・金田 義行
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ．幕張
• [Presentation] 数値シミュレーションから予測される浅部低周波イベントの特徴 (2011)
  • Author(s): 有吉 慶介・松澤 暢・堀 高峰・中田 令子・Jean-Paul Ampuero・日野 亮太・長谷川 昭・金田 義行
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ．幕張
• [Presentation] 浅部ゆっくり地震に伴う地殻変動の検出可能性
  • Author(s): 有吉 慶介・中田 令子・堀 高峰・金田 義行・松澤 暢・日野 亮太・長谷川 昭
  • Organizer: 日本地球惑星科学連合2013年大会
  • Place of Presentation: 幕張メッセ，千葉県
• [Presentation] 小繰り返し地震震源域における地震活動の変化から推定された摩擦構成則と地震発生過程
  • Author(s): 有吉 慶介・金田 義行・松澤 暢・日野 亮太・長谷川 昭
  • Organizer: 日本地震学会2013年秋季大会
  • Place of Presentation: 神奈川県民ホール，神奈川県
• [Presentation] A trial estimation of frictional properties and generation process of temporal activity change based on perturbed repeating-earthquakes
  • Author(s): Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Yoshiyuki Kaneda
  • Organizer: The 11th Society of Exploration Geophysicists of Japan, International Symposium
  • Place of Presentation: 新横浜プリンスホテル，神奈川県
• [Presentation] Geodetic characteristic of the postseismic deformation following the interplate large earthquake along the Japan Trench
  • Author(s): Yusaku Ohta, Ryota Hino, Keisuke Ariyoshi, 他8名
  • Organizer: American Geophysical Union 2013 Fall Meeting
  • Place of Presentation: モスコーンセンター，サンフランシスコ，USA
  • Invited
• [Presentation] The detectability of slow earthquakes in shallower part of subduction zone around Tonankai earthquakeby the Dense Oceanfloor Network systemfor Earthquakes and Tsunamis (DONET)
  • Author(s): Keisuke Ariyoshi, Ryoko Nakata, Toru Matsuzawa, Ryota Hino, Takane Hori, Akira Hasegawa, Yoshiyuki Kaneda
  • Organizer: American Geophysical Union 2013 Fall Meeting
  • Place of Presentation: モスコーンセンター，サンフランシスコ，USA
  • Invited
• [Presentation] A trial estimation of seismic coupling and crustal deformation by focusing on shallow slow earthquakes
  • Author(s): Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Ryoko Nakata, Takane Hori, Yoshiyuki Kaneda
  • Organizer: Geofluid-3
  • Place of Presentation: 東工大ディジタルホール，東京都
  • Invited
• [Presentation] 摩擦特性に依存する小繰り返し地震の揺らぎ
  • Author(s): 有吉 慶介・松澤 暢・日野 亮太・長谷川 昭・金田 義行
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ
• [Presentation] 海溝型巨大地震震源域における浅部ゆっくり地震の特徴
  • Author(s): 有吉 慶介・堀 高峰・中田 令子・金田 義行・松澤 暢・日野 亮太・長谷川 昭
  • Organizer: 2012年度日本地震学会秋季大会
  • Place of Presentation: 函館市民会館
• [Book] Practicality of monitoring crustal deformation processes in subduction zones by seafloor and inland networks of seismological observations, Earthquakes and their impact on societies, Sebastiano D'Amico (Ed.) (2014)
  • Author(s): Ariyoshi, K. and Y. Kaneda
  • Publisher: Springer International Publishing AG(in press)
• [Book] Earthquakes and their impact on societies (Chapter: A trial estimation of seismic plate coupling by focusing on the activity of shallow slow earthquakes) (2014)
  • Author(s): Keisuke Ariyoshi and Yoshiyuki Kaneda
  • Publisher: Springer
• [Book] Application of Vector-Type Super Computer to Understanding Giant Earthquakes and Aftershocks on Subduction Plate Boundaries, Sustained Simulation Performance 2012, Michael M. Resch, Xin Wang, Wolfgang Bez, Erich Focht, Hiroaki Kobayashi (Ed.) (2013)
  • Author(s): Ariyoshi, K., T. Matsuzawa, Y. Yabe, N. Kato, A. Hasegawa, Y. Kaneda
  • Pages: 67-80
  • Publisher: Springer Berlin Heidelberg(ISBN: 978-3-642-32453-6 (Print) 978-3-642-32454-3 (Online), doi: 10.1007/978-3-642-32454-3)
  • DOI: 10.1007/978-3-642-32454-3_6
  • ISBN: 9783642324536, 9783642324543
• [Book] Characteristics of Interaction between Interplate Earthquakes from the view of Multi-scale Simulations, Earthquakes: Triggers, Environmental Impact and Potential Hazards, Kostas Konstantinou (Ed.) (2013)
  • Author(s): Ariyoshi, K. and Y. Kaneda
  • Total Pages: 329
  • Publisher: Nova Publication(ISBN:978-1-62081-883-1)
• [Book] Earthquakes: Triggers, Environmental Impact and Potential Hazards (2013)
  • Author(s): Keisuke Ariyoshi, Yoshiyuki Kaneda
  • Total Pages: 329
  • Publisher: Nova Publication
• [Book] Sustained Simulation Performance 2012 (2013)
  • Author(s): Keisuke Ariyoshi, Toru Matsuzawa, Yasuo Yabe, Naoyuki Kato, Ryota Hino, Akira Hasegawa and Yoshiyuki Kaneda
  • Total Pages: 182
  • Publisher: Springer
• [Book] Frictional Characteristics in Deeper Part of Seismogenic Transition Zones on a Subduction Plate Boundary, Earthquake Research and Analysis -Seismology, Seismotectonic and Earthquake Geology, Sebastiano D'Amico (Ed.) (2012)
  • Author(s): Ariyoshi, K. and Y. Kaneda
  • Total Pages: 402
  • Publisher: InTech(ISBN: 978-953-307-991-2, doi:10.5772/28884)