Clarification of source mechanism of deep low-frequency tremor and estimation of its physical states by using earthquake remote triggering

2008 Fiscal Year Final Research Report

• Project/Area Number: 19740275
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Solid earth and planetary physics
• Research Institution: Kyoto University
• Principal Investigator: MIYAZAWA Masatoshi Kyoto University, 防災研究所, 准教授 (80402931)
• Project Period (FY): 2007 – 2008
• Keywords: 地震現象 / 深部低周波微動 / 動的トリガリング

Research Abstract

西南日本のプレートの沈み込み帯で発生する深部低周波微動が,2003年十勝沖地震,2004年スマトラ-アンダマン地震,2008年四川・〓川地震等による地震波によって誘発される現象を解明し,深さ約30-40kmにおけるプレート境界の物理状態を明らかにした.

Research Products

• [Journal Article] Learning from dynamic triggering of deep low-frequency tremor in subduction zones (2009)
  • Author(s): Masatoshi Miyazawa, Emily E. Brodsky, Jim Mori
  • Journal Title: Earth Planets and Space 60 Pages: e17-e20
  • Peer Reviewed
• [Journal Article] Deep low-frequency tremor that correlates with passing surface waves (2008)
  • Author(s): Masatoshi Miyazawa and Emily E. Brodsky
  • Journal Title: Journal of Geophysical Research 113 Pages: B01307
  • Peer Reviewed
• [Presentation] What can we learn from dynamic triggering of low-frequency earthquakes? (2008)
  • Author(s): Masatoshi Miyazawa, Emily E. Brodsky, and Jim Mori
  • Organizer: Eos Trans. AGU
  • Year and Date: 2008-12-17
• [Presentation] 深部低周波微動の動的トリガリング (2008)
  • Author(s): 宮澤理稔
  • Organizer: 第7回アジア国際地震連合総会・2008年日本地震学会秋季大会合同大会
  • Place of Presentation: (招待講演)
  • Year and Date: 2008-11-24
• [Presentation] 巨大地震の表面波に相関して発生する深部低周波微動 (2007)
  • Author(s): 宮澤理稔, Emily E. Brodsky
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 仙台
  • Year and Date: 2007-10-25
• [Presentation] Deep low-frequency earthquakes in western Japan remotely triggered by Rayleigh waves from great earthquakes (2007)
  • Author(s): Masatoshi Miyazawa
  • Organizer: Seismological Society of America 2007 annual meeting
  • Place of Presentation: Hawaii, USA(INVITED)
  • Year and Date: 2007-04-12