Multi scale slow earthquakesby ocean bottom geodetic and seismological observations

2010 Fiscal Year Self-evaluation Report

• Project/Area Number: 20244070
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Tohoku University
• Principal Investigator: FUJIMOTO Hiromi Tohoku University, 大学院・理学研究科, 教授 (50107455)
• Project Period (FY): 2008 – 2012
• Keywords: 測地 / 地震 / 固体地球科学

Research Abstract

沈み込み帯前弧側の海溝陸側斜面の分岐断層周辺において、地震学的および測地学的観測を行い、様々な時定数のゆっくり地震(マルチスケールのゆっくり地震)の検出および、それらの地震に伴う流体の移動の観測を行う。

Research Products

• [Journal Article] Very-low-frequency earthquakes related to small asperities on the plate boundary interface at the locked to aseismic transition (2009)
  • Author(s): Yoshihiro Ito, et al.
  • Journal Title: Journal of Geophysical Research 114 Pages: doi : /10.1029/2008JB006036
  • Peer Reviewed
• [Journal Article] Very-low-frequency earthquakes indicate a transpressional stress regime in the Nankai accretionary prism (2009)
  • Author(s): Yoshihiro Ito, et al.
  • Journal Title: Geophysical Research Letters 36 Pages: doi : 10.1029/2009GL03933
  • Peer Reviewed
• [Journal Article] 海底地殻変動観測 (2009)
  • Author(s): 藤本博己
  • Journal Title: 地震2 61S Pages: S69-S74
  • Peer Reviewed
• [Journal Article] Development of a seafloor acoustic ranging system toward the seafloor cable network system (2008)
  • Author(s): Yukihito Osada, et al.
  • Journal Title: Ocean Engineering 35 Pages: 1401-1405
  • Peer Reviewed
• [Journal Article] Long-term stability of acoustic benchmarks deployed on thick sediment for GPS/a coustic seafloor positioning
  • Author(s): Hiromi Fujimoto, 他6名
  • Journal Title: Modern Approached in solid earth sciences (Dilek et al.(eds.)) (Springer) in press
  • Peer Reviewed
• [Presentation] Temporal variation of oceanic sound speed structure affecting seafloor geodecy (2010)
  • Author(s): Motoyuki Kido, et al.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2010-12-10
• [Presentation] Improvement in the observation system for the GPS/A seafloor positioning (2010)
  • Author(s): Hiromi Fujimoto, 他
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2010-12-10
• [Presentation] 係留ブイ方式のGPS/A観測システムの開発(1) (2010)
  • Author(s): 藤本博己, 他
  • Organizer: 日本地震学会
  • Place of Presentation: 広島市
  • Year and Date: 2010-10-28
• [Presentation] Ocean-bottom seismic and geodetic observations of transient slow slip events in the Japan Trench (2010)
  • Author(s): Yoshihiro Ito, 他
  • Organizer: WPGM2010
  • Place of Presentation: Taipei
  • Year and Date: 2010-06-22
• [Presentation] 日本海におけるゆっくり地震検出のための海底地震・測地および湧水観測―YK08-06航海の概要と成果― (2008)
  • Author(s): 伊藤喜宏, 他
  • Organizer: 日本地質学会2008年大会
  • Place of Presentation: 秋田市
  • Year and Date: 2008-09-20