Remotely triggered seismicity in Yunnan, southwestern China, following the 2004 M(w)9.3 Sumatra earthquake
文献类型:期刊论文
作者 | Lei, Xinglin1,2; Xie, Chaodi3; Fu, Bihong4 |
刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
![]() |
出版日期 | 2011-08-05 |
卷号 | 116 |
ISSN号 | 2169-9313 |
DOI | 10.1029/2011JB008245 |
文献子类 | Article |
英文摘要 | Following the 2004 M(w)9.3 Sumatra earthquake, seismicity rate increased sharply over a wide area of up to similar to 2700 km away in Yunnan province, southwestern China. Raised seismicity lasts for similar to 14 days. During this period, more than 800 earthquakes with magnitude between 1.5 and 5.1 occurred. This is perhaps the most impressive example of remotely triggered seismicity yet observed. Major events were clustered at several sites that exhibit complex fault geometries, such as step overs and junctures. We use statistic approaches including the beta statistics to examine the statistical significance of the seismic rate increases associated with the Sumatra main shock and conclude that there is a reasonable probability that the raised seismicity was remotely triggered by the Sumatra earthquake. Both rapid onset of dynamic triggering (the very first event is a M4.6 earthquake occurred during the passage of the Rayleigh wave from the Sumatra earthquake) and delayed response (activated a few hours to a few days after the Sumatra earthquake) are well established. The triggered activities show more earthquake swarm-like characteristics as indicated by the epidemic-type aftershock sequence modeling results (large percentage of random components and less magnitude dependence in Omori law type self-triggering). Multiple sources of evidence, including intensive hydrothermal activities, and low velocity and high V-p/V-s zones in the lower to middle crust suggests that magma/mantle-generated fluids have a role in the region. High fluid pressure in branched fault zones weakened the faults, making them sensitive to external disturbances and leading to fluid-driven seismicity. |
WOS关键词 | SAN-ANDREAS FAULT ; RELATIVE QUIESCENCE ; ANDAMAN EARTHQUAKE ; STATISTICAL-MODEL ; GEOTHERMAL-FIELD ; STRESS CHANGES ; HECTOR MINE ; FLUID-FLOW ; HEAT-FLOW ; CALIFORNIA |
WOS研究方向 | Geochemistry & Geophysics |
语种 | 英语 |
WOS记录号 | WOS:000293652700002 |
出版者 | AMER GEOPHYSICAL UNION |
资助机构 | state Key Laboratory of Earthquake Dynamics(LED2008B04) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; National Nature Science Foundation of China(NSFC 40872126) ; National Nature Science Foundation of China(NSFC 40872126) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; National Nature Science Foundation of China(NSFC 40872126) ; National Nature Science Foundation of China(NSFC 40872126) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; National Nature Science Foundation of China(NSFC 40872126) ; National Nature Science Foundation of China(NSFC 40872126) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; state Key Laboratory of Earthquake Dynamics(LED2008B04) ; National Nature Science Foundation of China(NSFC 40872126) ; National Nature Science Foundation of China(NSFC 40872126) |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/73623] ![]() |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Lei, Xinglin |
作者单位 | 1.Geol Survey Japan, Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058567, Japan 2.China Earthquake Adm, State Key Lab Earthquake Dynam, Inst Geol, Beijing, Peoples R China 3.Yunnan Univ, Dept Geophys, Kunming 650091, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Lei, Xinglin,Xie, Chaodi,Fu, Bihong. Remotely triggered seismicity in Yunnan, southwestern China, following the 2004 M(w)9.3 Sumatra earthquake[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2011,116. |
APA | Lei, Xinglin,Xie, Chaodi,&Fu, Bihong.(2011).Remotely triggered seismicity in Yunnan, southwestern China, following the 2004 M(w)9.3 Sumatra earthquake.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,116. |
MLA | Lei, Xinglin,et al."Remotely triggered seismicity in Yunnan, southwestern China, following the 2004 M(w)9.3 Sumatra earthquake".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 116(2011). |
入库方式: OAI收割
来源:地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。