Understanding of the mechanisms that cause earthquake occurrences by studying the dynamic triggering

• Project/Area Number: 25400450
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Kyoto University
• Principal Investigator: Miyazawa Masatoshi 京都大学, 防災研究所, 准教授 (80402931)
• Co-Investigator(Kenkyū-buntansha): OHMI Shiro 京都大学, 防災研究所, 准教授 (50263158) ; YUKUTAKE Yohei 神奈川県温泉地学研究所, 研究員 (20435853)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 誘発地震 / 動的誘発作用 / 2011年東北地方太平洋沖地震 / 箱根カルデラ / 2011年静岡県東部地震 / 2014年ラット諸島地震 / 東北地方太平洋沖地震 / 地震誘発過程 / 誘発作用 / 統合地震活動モデル / 繰り返し疲労破壊 / 群発地震活動 / 箱根火山

Outline of Final Research Achievements

Passage of seismic waves from large earthquakes often remotely trigger other earthquakes. We studied the triggering of such triggered earthquakes to provide a better understanding of the mechanisms that cause earthquake occurrences. The triggering mechanisms studied in this research project include volcanic earthquakes in Hakone volcano in 2011 and the 2011 M6.4 Eastern Shizuoka earthquake, which were dynamically triggered by the 2011 M9.0 Tohoku-Oki earthquake. We also found that the 2014 M7.9 Rat Islands earthquakes may have been remotely triggered by seismic waves from significant seismicity of M7- earthquakes in the Kermadec Islands located about 9000 km away.

Research Products

• [Journal Article] Seismic Activity near Mt. Hotaka in Hida Mountain Range in 2013, Detected by the Matched Filter Method (2015)
  • Author(s): 大見士朗
  • Journal Title: Zisin (Journal of the Seismological Society of Japan. 2nd ser.) Volume: 68 Issue: 1 Pages: 1-15
  • DOI: 10.4294/zisin.68.1
  • NAID: 130005087197
  • ISSN: 0037-1114, 1883-9029, 2186-599X
  • Peer Reviewed
• [Journal Article] Seismic fatigue failure may have triggered the 2014 Mw7.9 Rat Islands earthquake (2015)
  • Author(s): Masatoshi Miyazawa
  • Journal Title: Geophysical Research Letters Volume: 42 Issue: 7 Pages: 2196-2203
  • DOI: 10.1002/2015gl063036
  • NAID: 120005663307
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Matched Filter Methodによる群発地震の解析の試み ―2011年飛騨山脈山麓旗鉾付近の群発地震活動の例― (2014)
  • Author(s): 大見士朗
  • Journal Title: 京都大学防災研究所年報 Volume: 57B Pages: 70-75
  • NAID: 120005567960
  • Open Access
• [Journal Article] Remotely triggered seismic activity in Hakone volcano during and after the passage of surface waves from the 2011 M9.0 Tohoku-Oki earthquake (2013)
  • Author(s): Yohei Yukutake, Masatoshi Miyazawa, Ryou Honda, Masatake Harada, Hiroshi Ito, Minoru Sakaue, Kazuki Koketsu, Akio Yoshida
  • Journal Title: Earth and Planetary Science Letters Volume: 373 Pages: 205-216
  • DOI: 10.1016/j.epsl.2013.05.004
  • Peer Reviewed
• [Presentation] Integrated Seismicity Model to Detect Pairs of Possible Interdependent Earthquakes and Its Application to Aftershocks of the 2011 Tohoku-Oki Earthquake and Sequence of the 2014 Kermadec and Rat Islands Earthquakes (2015)
  • Author(s): Masatoshi Miyazawa & Rina Tamura
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] Possibility of remote triggering of the 2014 Mw7.9 Rat Islands earthquake examined by an integrated seismicity model (2015)
  • Author(s): Masatoshi Miyazawa
  • Organizer: 26th IUGG General Assembly
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] Seismic activity near the Mt. Hotaka in the Hida mountain range, central Japan, detected by the matched filter method (2015)
  • Author(s): Shiro Ohmi
  • Organizer: 26th IUGG General Assembly
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] Seismic velocity changes associated with volcanic activity at Hakone volcano, central Japan, using ambient seismic noise records (2015)
  • Author(s): Yohei Yukutake
  • Organizer: 26th IUGG General Assembly
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] 2011年3月15日静岡県東部地震(M6.4)の誘発過程に関する研究 (2015)
  • Author(s): 田村理納・宮澤理稔
  • Organizer: 日本地球惑星科学連合
  • Place of Presentation: 千葉
  • Year and Date: 2015-05-22
• [Presentation] 飛騨山脈南部の2014年5月の地震活動 (2014)
  • Author(s): 大見士朗
  • Organizer: 日本地震学会2014年度秋季大会
  • Place of Presentation: 新潟市
  • Year and Date: 2014-11-24 – 2014-11-26
• [Presentation] Remotely triggered seismic activity in Hakone volcano during and after the passage of surface waves from the 2011 M9.0 Tohoku-Oki earthquake (2013)
  • Author(s): Yohei Yukutake, Masatoshi Miyazawa, Ryou Honda, Masatake Harada, Hiroshi Ito, Minoru Sakaue, Kazuki Koketsu, Akio Yoshida
  • Organizer: IAVCEI 2013
  • Place of Presentation: Kagoshima, Japan
  • Invited
• [Presentation] Triggering sequence of seismicity by dynamic stress changes from the 2011 Mw 9.0 Tohoku-Oki earthquake (2013)
  • Author(s): Masatoshi Miyazawa
  • Organizer: IAHS-IASPO-IASPEI Joint Assembly
  • Place of Presentation: Gotenburg, Sweden