Estimation of the source model for the foreshock of the 2004 off the Kii peninsula earthquakes and strong ground motion simulation of the hypothetical Tonankai earthquake using the empirical Green's function method

• Suzuki Wataru

  Disaster Prevention Research Institute, Kyoto University

• Iwata Tomotaka

  Disaster Prevention Research Institute, Kyoto University

• Asano Kimiyuki

  Disaster Prevention Research Institute, Kyoto University

• Yamada Nobuyuki

  Disaster Prevention Research Institute, Kyoto University

抄録

We estimated the source model for the foreshock of the 2004 off the Kii peninsula earthquakes by empirical Green's function modeling. The size and the rise time of the strong motion generation area (SMGA) were estimated to be 30 × 15 km, and 0.9 sec, respectively. The stress drop of the SMGA was calculated to be 8.3 MPa. This model could reproduce long-period ground motions following the direct S-wave observed in the Osaka basin well. Using the derived source parameters, we simulated strong motions of the hypothetical Tonankai earthquake. Distribution of the seismic intensity derived here is similar to that obtained by the previous report. We could predict long-period ground motions which last for a long duration at the basin sites.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 57 (4), 345-350, 2005

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Empirical Green's function method
• foreshock of the 2004 off the Kii peninsula earthquakes
• source model
• stress drop
• strong ground-motion simulation
• hypothetical Tonankai earthquake

詳細情報

• CRID: 1390001206512563584
• NII論文ID: 10017468556
• NII論文ID: 130003956491
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03352574
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 7310925
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7310925
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03352574.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03352574/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03352574
• 本文言語コード: en
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