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Locations and types of ruptures involved in the 2008 Sichuan earthquake inferred from SAR image matching
| Title: | Locations and types of ruptures involved in the 2008 Sichuan earthquake inferred from SAR image matching |
| Authors: | Kobayashi, Tomokazu Browse this author | | Takada, Youichiro Browse this author | | Furuya, Masato Browse this author →KAKEN DB | | Murakami, Makoto Browse this author |
| Keywords: | 2008 Sichuan Earthquake | | ground displacement | | SAR offset-tracking |
| Issue Date: | Apr-2009 |
| Publisher: | American Geophysical Union |
| Journal Title: | Geophysical Research Letters |
| Volume: | 36 |
| Issue: | 7 |
| Start Page: | L07302 |
| Publisher DOI: | 10.1029/2008GL036907 |
| Abstract: | We have detected detailed ground displacements in the proximity of the Longmen Shan fault zone (LMSFZ) by applying a SAR offset-tracking method in the analysis of the 2008 Sichuan earthquake. An elevation-dependent correction is indispensable for achieving sub-meter accuracy. A sharp displacement discontinuity with a relative motion of ~1-2 m appears over a length of 200 km along the LMSFZ, which demonstrates that the main rupture has proceeded on the Beichuan fault (BF) among several active faults composing the LMSFZ, and a new active fault is detected on the northeastward extension of the BF. The rupture on the BF is characterized by a right-lateral motion in the northeast, while in the southwest an oblique right-lateral thrust slip is suggested. In contrast to the northeast, where a major rupture proceeded on the BF only, in the southwest multiple thrust ruptures have occurred in the southeastern foot of the Pengguan massif. |
| Rights: | An edited version of this paper was published by AGU. Copyright 2009 American Geophysical Union. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/38133 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 小林 知勝
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