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Study on interplate slip properties by means of slow slip events

Research Project

Project/Area Number 25400452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Solid earth and planetary physics
Research InstitutionKobe University

Principal Investigator

Hirose Hitoshi  神戸大学, 都市安全研究センター, 准教授 (00465965)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords地殻変動 / GNSS / 傾斜 / すべり過程 / 群発地震活動 / 地震の誘発
Outline of Final Research Achievements

Slow slip events (SSE) occur every 2-7 years off the east coast of the Boso Peninsula, Kanto area, Japan. Because SSEs are similar phenomena to megathrust earthquakes in subduction zones in a sense that a slip episode on a fault, they are a key to understand the physical characteristics of the plate interface. SSEs are found worldwide, mainly in subduction zones. The Boso SSEs have remarkable characteristics, that is, an earthquake swarm activity is coincident with an SSE. In order to examine the relation between an SSE and an earthquake swarm activity, we estimate spatiotemporal slip distributions of the Boso SSEs based on GNSS displacements and tilt changes, and compare them with the correlated earthquake swarm activities. We found a clear spatial and temporal correlation between them. This result suggests that slow slip directly triggers earthquakes during an SSE.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (23 results)

All 2016 2015 2014 2013 Other

All Journal Article (5 results) (of which Open Access: 1 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results) Presentation (18 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] 2007年・2011年房総半島沖スロースリップイベント: 群発地震活動の駆動プロセス2015

    • Author(s)
      廣瀬仁, 松澤孝紀, 木村武志, 木村尚紀
    • Journal Title

      神戸大学都市安全研究センター研究報告

      Volume: 19 Pages: 1-9

    • NAID

      120006634849

    • Related Report
      2015 Annual Research Report
    • Open Access
  • [Journal Article] Possible shallow slow slip events in Hyuga-nada, Nankai subduction zone, inferred from migration of very low frequency earthquakes2015

    • Author(s)
      Youichi Asano, Kazushige Obara, Takanori Matsuzawa, Hitoshi Hirose, and Yoshihiro Ito
    • Journal Title

      Geophys. Res. Lett.

      Volume: 42 Issue: 2 Pages: 331-338

    • DOI

      10.1002/2014gl062165

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Boso slow slip events in 2007 and 2011 as a driving process for the accompanying earthquake swarm2014

    • Author(s)
      Hitoshi Hirose, Takanori Matsuzawa, Takeshi Kimura, and Hisanori Kimura
    • Journal Title

      Geophys. Res. Lett.

      Volume: 41 Issue: 8 Pages: 2778-2785

    • DOI

      10.1002/2014gl059791

    • Related Report
      2014 Research-status Report 2013 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 豊後水道周辺域での「スロー地震」連動現象とその意義2014

    • Author(s)
      廣瀬仁, 浅野陽一, 小原一成, 松澤孝紀
    • Journal Title

      神戸大学都市安全研究センター研究報告

      Volume: 18

    • NAID

      120006634823

    • Related Report
      2013 Research-status Report
  • [Journal Article] Comprehensive model of short- and long-term slow slip events in the Shikoku region of Japan, incorporating a realistic plate configuration2013

    • Author(s)
      Matsuzawa, T., B. Shibazaki, K. Obara, and H. Hirose
    • Journal Title

      Geophysical Research Letters

      Volume: 40 Issue: 19 Pages: 5125-5130

    • DOI

      10.1002/grl.51006

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Numerical modeling of slow slip events in Nankai and Cascadia, considering plate configuration and tremor distribution2016

    • Author(s)
      Matsuzawa T., Shibazaki B., Obara K., Hirose H.
    • Organizer
      AGU Chapman Conference on the Slow Slip Phenomena
    • Place of Presentation
      Ixtapa, Guerrero, Mexico
    • Year and Date
      2016-02-21
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 日本列島周辺におけるスロー地震モニタリングと数値モデリング2015

    • Author(s)
      松澤孝紀, 浅野陽一, 田中佐千子, 木村武志, 小原一成, 前田拓人, 伊藤喜宏, 廣瀬仁
    • Organizer
      日本地震学会2015年度秋季大会
    • Place of Presentation
      神戸国際会議場(兵庫県神戸市)
    • Year and Date
      2015-10-26
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 2014-15 slow earthquake activity in Bungo Channel2015

    • Author(s)
      Obara K., Takagi R., Asano Y., Matsuzawa T., Tanaka T., Hirose H., Maeda T.
    • Organizer
      Joint Workshop on Slow Earthquakes 2015
    • Place of Presentation
      名古屋大学環境総合館(愛知県名古屋市)
    • Year and Date
      2015-09-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2014 Boso Slow Slip Event: the Source Slip Process based on Tilt and GNSS Measurements2014

    • Author(s)
      Hitoshi Hirose, Takanori Matsuzawa, Takeshi Kimura, Hisanori Kimura
    • Organizer
      AGU Fall Meeting 2014
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2014-12-15 – 2014-12-19
    • Related Report
      2014 Research-status Report
  • [Presentation] Ambient Tremor Triggered by Long-term Slow Slip Event in Bungo Channel, Southwest Japan2014

    • Author(s)
      Kazushige Obara, Hitoshi Hirose, Takanori Matsuzawa, Sachiko Tanaka, Takuto Maeda
    • Organizer
      AGU Fall Meeting 2014
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2014-12-15 – 2014-12-19
    • Related Report
      2014 Research-status Report
  • [Presentation] Numerical modeling of slow slip events in the seismic cycles of megathrust earthquakes in southwestern Japan2014

    • Author(s)
      Takanori Matsuzawa, Bunichiro Shibazaki, Kazushige Obara, Hitoshi Hirose
    • Organizer
      AGU Fall Meeting 2014
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2014-12-15 – 2014-12-19
    • Related Report
      2014 Research-status Report
  • [Presentation] 南海トラフの大地震発生サイクル間におけるスロースリップイベントの数値シミュレーション2014

    • Author(s)
      松澤孝紀, 芝崎文一郎, 小原一成, 廣瀬仁
    • Organizer
      日本地震学会2014年度秋季大会
    • Place of Presentation
      朱鷺メッセ (新潟県新潟市)
    • Year and Date
      2014-11-24 – 2014-11-26
    • Related Report
      2014 Research-status Report
  • [Presentation] A Variation in the Recurrence interval of the Boso Peninsula Slow Slip Events, Central Japan2014

    • Author(s)
      Hitoshi Hirose, Takanori Matsuzawa
    • Organizer
      GSA Annual Meeting 2014
    • Place of Presentation
      Vancouver (Canada)
    • Year and Date
      2014-10-19 – 2014-10-22
    • Related Report
      2014 Research-status Report
  • [Presentation] Numerical Simulation of Long- and Short-term Slow Slip Events in the Nankai Subduction Zone2014

    • Author(s)
      Takanori Matsuzawa, Bunichiro Shibazaki, Kazushige Obara, Hitoshi Hirose
    • Organizer
      Joint Workshop on Slow Earthquakes
    • Place of Presentation
      きはだホール (京都府宇治市)
    • Year and Date
      2014-09-08 – 2014-09-10
    • Related Report
      2014 Research-status Report
  • [Presentation] Ambient tremor triggered by long-term slow slip event in Bungo channel, southwest Japan2014

    • Author(s)
      Kazushige Obara, Hitoshi Hirose, Youichi Asano, Takanori Matsuzawa, Sachiko Tanaka, Takuto Maeda
    • Organizer
      Joint Workshop on Slow Earthquakes
    • Place of Presentation
      きはだホール (京都府宇治市)
    • Year and Date
      2014-09-08 – 2014-09-10
    • Related Report
      2014 Research-status Report
  • [Presentation] 浅部超低周波地震と長期的スロースリップイベントの同期発生の数値モデリング2014

    • Author(s)
      松澤孝紀, 芝崎文一郎, 小原一成, 廣瀬仁
    • Organizer
      日本地球惑星科学連合連合大会2014年大会
    • Place of Presentation
      パシフィコ横浜 (神奈川県横浜市)
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Research-status Report
  • [Presentation] A comparison of the source processes of four Boso Peninsula slow slip events from 1996 to 2011 based on nearly homogeneous GNSS stations2013

    • Author(s)
      Hitoshi Hirose, Takanori Matsuzawa, Takeshi Kimura
    • Organizer
      AGU Fall Meeting 2013
    • Place of Presentation
      Moscone Center, San Francisco, CA, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] A comparison of the source processes of four Boso Peninsula slow slip events2013

    • Author(s)
      Hitoshi Hirose
    • Organizer
      スロー地震合同研究集会
    • Place of Presentation
      東京大学地震研究所
    • Related Report
      2013 Research-status Report
  • [Presentation] Implications of slow slip without tectonic tremor: insights from Kilauea (Hawaii) and Boso (Japan)2013

    • Author(s)
      Emily D. Montgomery-Brown, Hitoshi Hirose
    • Organizer
      AGU Fall Meeting 2013
    • Place of Presentation
      Moscone Center, San Francisco, CA, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] Numerical modeling of interaction between shallow very low frequency earthquakes and deep slow slip events2013

    • Author(s)
      Takanori Matsuzawa; Bunichiro Shibazaki; Kazushige Obara; Hitoshi Hirose
    • Organizer
      AGU Fall Meeting 2013
    • Place of Presentation
      Moscone Center, San Francisco, CA, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] 外部イベントによる応力変化が房総沖スロースリップの発生間隔に与える影響の定量的評価2013

    • Author(s)
      山﨑隆史, 佐藤利典, 芝崎文一郎, 橋間昭徳, 廣瀬仁
    • Organizer
      2013年日本地震学会秋季大会
    • Place of Presentation
      横浜市
    • Related Report
      2013 Research-status Report
  • [Presentation] 浅部超低周波地震と長期的・短期的スロースリップイベント発生の数値モデリング2013

    • Author(s)
      松澤孝紀, 芝崎文一郎, 小原一成, 廣瀬仁
    • Organizer
      2013年日本地震学会秋季大会
    • Place of Presentation
      横浜市
    • Related Report
      2013 Research-status Report
  • [Presentation] 豊後水道周辺域での「スロー地震」連動現象

    • Author(s)
      廣瀬仁
    • Organizer
      東京大学地震研究所共同利用研究集会「海底地殻変動観測網構築に向けた検討会」
    • Place of Presentation
      東京大学地震研究所
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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