A preliminary analysis on rupture characteristics of Jiashi strong earthquake
文献类型：期刊论文
| 作者 | Shan, XJ; He, YM; Zhu, Y; Ma, BZ; Zhang, GF; Yang, CR |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2002-05-01 |
| 卷号 | 45期号:3页码:416-425 |
| ISSN号 | 0001-5733 |
| 关键词 | Jiashi strong earthquake swarm earthquake mechanism rupture characteristics of focus |
| 文献子类 | Article |
| 英文摘要 | A strong earthquake swarm, including 7 events with M-s greater than or equal to 6.0, occurred in Jiashi, Xinjiang in 1997. It is exceptional for the intraplate seismicity. Using GDSN broadband P wave records and the adaptive hybrid global search algorithm, we have investigated the rupture process of the strong swarm. The results show that Jiashi strong swarm shows mainly strike slip and normal focal mechanisms. The common features of the earthquakes in the swarm are that the source stress field is characterized by a pressure stress in NNE, and a tension stress in NW. The directions of principal stresses are different from directions of the regional modem pressure stress field, showing out the local characteristics. The focus repture characteristics show that slip scales, risetimes and the rupture times of finite fault are smaller, similar with focal rupture area. The rupture growth trajectories are from one point to all sides without obvious extended direction. The rupture surface is to NNE, similar to gradient belt of focal depth, gradient belt of crustal deformation, isoseisms and extended direction of earthquakes. Jiashi strong earthquake swarm occurred several times with brittle failure to NNE under tension-shear stress which is formed under nonhomogeneous deformation in the upper crust. The characteristics of focus mechanisms are formed with sinistral strike slip and normal rupture. |
| WOS关键词 | EVENT |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000175848600013 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77863]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Shan, XJ |
| 作者单位 | 1.China Seismol Bur, Inst Geol, Beijing 100029, Peoples R China 2.China Seismol Bur, Lab Tectonocphys, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China 4.Seismol Bur Xinjiang Uygur Atuonomous Reg, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shan, XJ,He, YM,Zhu, Y,et al. A preliminary analysis on rupture characteristics of Jiashi strong earthquake[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2002,45(3):416-425. |
| APA | Shan, XJ,He, YM,Zhu, Y,Ma, BZ,Zhang, GF,&Yang, CR.(2002).A preliminary analysis on rupture characteristics of Jiashi strong earthquake.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,45(3),416-425. |
| MLA | Shan, XJ,et al."A preliminary analysis on rupture characteristics of Jiashi strong earthquake".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 45.3(2002):416-425. |
入库方式： OAI收割
来源：地质与地球物理研究所
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