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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第72号 >
巨大遠地地震による長周期歪地震波形の解析 : 2004年Sumatra-Andaman地震 (Mw9.0) 及び2005年Nias地震 (Mw8.6)
| Title: | 巨大遠地地震による長周期歪地震波形の解析 : 2004年Sumatra-Andaman地震 (Mw9.0) 及び2005年Nias地震 (Mw8.6) |
| Other Titles: | Analysis of long-period strain seismograms from great far earthquakes : 2004 Sumatra-Andaman earthquake (Mw9.0) and 2005 Nias earthquake |
| Authors: | 上垣, 拓郎1 Browse this author | | 池上, 裕2 Browse this author | | 中西, 一郎3 Browse this author | | 小久保, 一哉4 Browse this author | | 露木, 貴裕5 Browse this author | | 中村, 浩二6 Browse this author | | 原田, 智史7 Browse this author |
| Authors(alt): | Kamigaki, Takuro1 | | Ikegami, Yutaka2 | | Nakanishi, Ichiro3 | | Kokubo, Kazuya4 | | Tsuyuki, Takahiro5 | | Nakamura, Koji6 | | Harada, Satoshi7 |
| Issue Date: | 15-Mar-2009 |
| Publisher: | 北海道大学大学院理学研究院自然史科学部門（地球物理学） |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 72 |
| Start Page: | 379 |
| End Page: | 382 |
| Abstract: | The long-period strain seismograms from the Sumatra-Andaman earthquake of December 26, 2004 and the Nias earthquake of March 28, 2005 are analyzed by comparing the observed seismograms with synthetic seismograms calculated by normal mode theory. The multiple CMT source (Tsai et al., 2005) and Harvard CMT solution explain the seismograms recorded by both extensometers and volumetric strainmeters from the 2004 and 2005 earthquakes, respectively. The long-period strain seismograms observed in Japan are consistent with about 9 min source duration and 1200 km fault length proposed by Tsai et al. (2005) and Velasco et al. (2006). |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/38167 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第72号
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