Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2017JB014227 |
Delayed Seismicity Rate Changes Controlled by Static Stress Transfer | |
Kroll, Kayla A.1,2; Richards-Dinger, Keith B.1; Dieterich, James H.1; Cochran, Elizabeth S.3 | |
通讯作者 | Kroll, Kayla A. |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
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ISSN | 2169-9313 |
EISSN | 2169-9356 |
出版年 | 2017 |
卷号 | 122期号:10页码:7951-7965 |
英文摘要 | On 15 June 2010, a M(w)5.7 earthquake occurred near Ocotillo, California, in the Yuha Desert. This event was the largest aftershock of the 4 April 2010 M(w)7.2 El Mayor-Cucapah (EMC) earthquake in this region. The EMC mainshock and subsequent Ocotillo aftershock provide an opportunity to test the Coulomb failure hypothesis (CFS). We explore the spatiotemporal correlation between seismicity rate changes and regions of positive and negative CFS change imparted by the Ocotillo event. Based on simple CFS calculations we divide the Yuha Desert into three subregions, one triggering zone and two stress shadow zones. We find the nominal triggering zone displays immediate triggering, one stress shadowed region experiences immediate quiescence, and the other nominal stress shadow undergoes an immediate rate increase followed by a delayed shutdown. We quantitatively model the spatiotemporal variation of earthquake rates by combining calculations of CFS change with the rate-state earthquake rate formulation of Dieterich (1994), assuming that each subregion contains a mixture of nucleation sources that experienced a CFS change of differing signs. Our modeling reproduces the observations, including the observed delay in the stress shadow effect in the third region following the Ocotillo aftershock. The delayed shadow effect occurs because of intrinsic differences in the amplitude of the rate response to positive and negative stress changes and the time constants for return to background rates for the two populations. We find that rate-state models of time-dependent earthquake rates are in good agreement with the observed rates and thus explain the complex spatiotemporal patterns of seismicity. |
英文关键词 | seismicity shutdown rate state Coulomb failure seismicity rate increase decrease delayed shutdown postseismic deformation |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000418577900027 |
WOS关键词 | SAN-ANDREAS FAULT ; M-W ; SOUTHERN CALIFORNIA ; POSTSEISMIC DEFORMATION ; EARTHQUAKE SEQUENCE ; LANDERS EARTHQUAKE ; FAILURE STRESS ; CHI-CHI ; AFTERSHOCKS ; SHADOW |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200531 |
作者单位 | 1.Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA; 2.Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA; 3.US Geol Survey, Earthquake Sci Ctr, Pasadena, CA 91106 USA |
推荐引用方式 GB/T 7714 | Kroll, Kayla A.,Richards-Dinger, Keith B.,Dieterich, James H.,et al. Delayed Seismicity Rate Changes Controlled by Static Stress Transfer[J]. United States Geological Survey,2017,122(10):7951-7965. |
APA | Kroll, Kayla A.,Richards-Dinger, Keith B.,Dieterich, James H.,&Cochran, Elizabeth S..(2017).Delayed Seismicity Rate Changes Controlled by Static Stress Transfer.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,122(10),7951-7965. |
MLA | Kroll, Kayla A.,et al."Delayed Seismicity Rate Changes Controlled by Static Stress Transfer".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 122.10(2017):7951-7965. |
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