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Estimation of rupture processes of the 2008 Wenchuan Earthquake from joint analyses of two regional seismic arrays

文献类型：期刊论文

作者Huang, Bor-Shouh1; Chen, Jiu-Hui2; Liu, Qi-Yuan2; Chen, Yue-Gau3; Xu, Xi-Wei2; Wang, Chun-Yong4; Lee, Shiann-Jong1; Yao, Zhen-Xing5
刊名TECTONOPHYSICS
出版日期2012-11-20
卷号578页码:87-97
关键词Rupture processes Source image Seismic array Back-projection
ISSN号0040-1951
DOI10.1016/j.tecto.2011.12.026
文献子类Article
英文摘要We estimated the source rupture of the 2008 Wenchuan Earthquake (Ms 8), China, based on a back-projection of seismic waves to their source plane, using data from regional broadband arrays in Taiwan and northern Vietnam. Observations from these arrays, located at different azimuths, were processed to evaluate the spatio-temporal rupture behavior of the fault. The seismic energy spot converted from windowed array waveforms was back-projected to the rupture plane of the earthquake, to image the instantaneous slip on the fault plane. Rupture processes were reconstructed based on the imaged time-dependent seismic energy radiating from the earthquake fault plane. The high station density of both arrays enabled a detailed examination of the rupture processes. The results indicate that the 2008 Wenchuan Earthquake had a rupture duration of approximately 100 s. with major asperities radiating energy at 50 s after the initiation of rupture. The location of asperities is in good agreement with sections of the earthquake fault along which major damage occurred, such as along the Yingxiu-Beichuan Fault. The radiated seismic energy shows a complex spatial distribution on the fault plane. Our analysis indicates that the rupture initiated at the epicenter and extended to the northeast for approximately 280 km. The average rupture velocity of this earthquake was approximately 2.8 km/s. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词CHINA ; TRACKING ; REVERSE ; OBLIQUE ; SICHUAN ; TAIWAN ; RELOCATION ; SEQUENCE ; PLATEAU
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000312509000008
出版者ELSEVIER SCIENCE BV
资助机构Academia Sinica ; Academia Sinica ; National Science Council, Taiwan(99-2116-M-001-022 ; National Science Council, Taiwan(99-2116-M-001-022 ; National Natural Science Foundation of China(40821160550) ; National Natural Science Foundation of China(40821160550) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; 99-2116-M-001-002 ; 99-2116-M-001-002 ; 99-2116-M-002-005) ; 99-2116-M-002-005) ; Academia Sinica ; Academia Sinica ; National Science Council, Taiwan(99-2116-M-001-022 ; National Science Council, Taiwan(99-2116-M-001-022 ; National Natural Science Foundation of China(40821160550) ; National Natural Science Foundation of China(40821160550) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; 99-2116-M-001-002 ; 99-2116-M-001-002 ; 99-2116-M-002-005) ; 99-2116-M-002-005) ; Academia Sinica ; Academia Sinica ; National Science Council, Taiwan(99-2116-M-001-022 ; National Science Council, Taiwan(99-2116-M-001-022 ; National Natural Science Foundation of China(40821160550) ; National Natural Science Foundation of China(40821160550) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; 99-2116-M-001-002 ; 99-2116-M-001-002 ; 99-2116-M-002-005) ; 99-2116-M-002-005) ; Academia Sinica ; Academia Sinica ; National Science Council, Taiwan(99-2116-M-001-022 ; National Science Council, Taiwan(99-2116-M-001-022 ; National Natural Science Foundation of China(40821160550) ; National Natural Science Foundation of China(40821160550) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; State Key Laboratory of Earthquake Dynamics(LED-2008-A04) ; 99-2116-M-001-002 ; 99-2116-M-001-002 ; 99-2116-M-002-005) ; 99-2116-M-002-005)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84606]  
专题中国科学院地质与地球物理研究所
通讯作者Huang, Bor-Shouh
作者单位1.Acad Sinica, Inst Earth Sci, Taipei 115, Taiwan
2.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing, Peoples R China
3.Natl Taiwan Univ, Dept Geosci, Taipei 10764, Taiwan
4.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Bor-Shouh,Chen, Jiu-Hui,Liu, Qi-Yuan,et al. Estimation of rupture processes of the 2008 Wenchuan Earthquake from joint analyses of two regional seismic arrays[J]. TECTONOPHYSICS,2012,578:87-97.
APA Huang, Bor-Shouh.,Chen, Jiu-Hui.,Liu, Qi-Yuan.,Chen, Yue-Gau.,Xu, Xi-Wei.,...&Yao, Zhen-Xing.(2012).Estimation of rupture processes of the 2008 Wenchuan Earthquake from joint analyses of two regional seismic arrays.TECTONOPHYSICS,578,87-97.
MLA Huang, Bor-Shouh,et al."Estimation of rupture processes of the 2008 Wenchuan Earthquake from joint analyses of two regional seismic arrays".TECTONOPHYSICS 578(2012):87-97.

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