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タイトル: | Near-source released energy in relation to fracture energy on earthquake faults |
著者: | Mikumo, Takeshi Fukuyama, Eiichi |
発行日: | Jun-2006 |
出版者: | Seismological Society of America |
誌名: | Bulletin of the Seismological Society of America |
巻: | 96 |
号: | 3 |
開始ページ: | 1177 |
終了ページ: | 1181 |
抄録: | The near-source energy released on a fault is estimated through the strain energy change and the fracture energy from the results of kinematic waveform inversion and dynamic modeling for two different types of earthquakes: a shallow crustal earthquake, the 2000 Tottori, Japan (Mw 6.6) earthquake, and an in-slab event, the 1999 Oaxaca, Mexico (Mw 7.5) earthquake. The procedure incorporates the spatial distribution of slip, critical slip-weakening distance, stress drop, and strength excess. The results show that the near-source energy density estimated over major asperities on the fault is nearly the same for the two earthquakes, while the fracture energy on the in-slab fault is appreciably larger than that for the crustal fault, suggesting higher strength in the in-slab fault zone. The near-source released energy on major asperities is significantly larger than the fracture energy in the two earthquakes. |
著作権等: | © 2006 Bulletin of the Seismological Society of America |
URI: | http://hdl.handle.net/2433/193416 |
DOI(出版社版): | 10.1785/0120050121 |
関連リンク: | http://www.bssaonline.org/content/96/3/1177 |
出現コレクション: | 三雲 健 |
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