2" class=MsoNormal>2pt; mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt" lang=EN-US>2010 Earthquake in
详细信息
- 责任者：Qian Xiaodong (Earthquake Administration of Yunnan Province ; Kunming 650224 ; China) ; Qin Jiazheng
- 刊名：Journal of Seismological Research
- 出版年：2010
- 卷期：33(4)
- 关键词：玉树地震2010 ; Yushu earthquake 2010 ; 震源机制 ; focal mechanism ; 青海 ; Qinghai Province
- 页码：p.255-264
- 图表：9 illus., 2 tables, 13 refs.
- 分类号：0500
- issnNo：ISSN1000-0666
- isbnNo：CN53-1062/P
摘要
Based on scaling law,fault rupture and stress parameters of the MS7.1 Yushu earthquake are estimated,resulting the seismic moment M0=1.78×1019 N·m,moment magnitue MW=6.8,area S=468 km2,maximum offset D=1.4 m,fault length L=37 km,the width W=12.6 km,shear stress τ0=16.8 MPa,stress drop Δσ=7.03 MPa.Analysis on historical earthquakes shows that Yushu magnitude 7.1 earthquake occurred in the world for more than magnitude 8 earthquake,in West China Triangle over magnitude 7.8 earthquake,north-south seismic zone earthquakes above magnitude 7 and the Bayankala block more than magnitude 7 earthquake in the context of intense activity.After the earthquake Yushu,Bayankala block and Qiangtang block and the Sichuan-Yunnan Rhombic block of Qinghai-Tibet Plateau future occurrence of more than magnitude 7 earthquake in more dangerous.
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