| Large aftershocks triggering by Coulomb failure stress following the 2001 M_S=8.1 great Kunlun earthquake |
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| 作者姓名： | 郝平 傅征祥 田勤俭 刘杰 刘桂萍 |
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| 作者单位： | Center for Analysis and Predication，China Seismological Bureau，Center for Analysis and Predication，China Seismological Bureau，Center for Analysis and Predication，China Seismological Bureau，Center for Analysis and Predication，China Seismological Bureau，Department of Earthquake Monitoring and Predication，China Seismological Bureau Beijing 100036，China，Beijing 100036，China，Beijing 100036，China，Beijing 100036，China，Beijing 100036，China |
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| 基金项目： | The State Sciences and Technology Key Project During the Tenth Five-year Plan (2001BA601B02-02-04) China-Greece International Cooperative Research Project on Seismology and Chinese Joint Seismological Science Foundation (103073). |
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| 摘 要： | IntroductionItisshowedbyresearchesonearthquakestresstriggeringrecentlythatsmall'static'stresschangesduetopermanentfaultdisplacementcanalterthelikelihoodof,ortrigger,earthquakesonnearbyfaults(Harris,1998).Manystudiesoftriggeringinthenear-field,particularlyofaftershocks,showthesestaticchangesaretriggeringagent(Kilb,etal,2000).ReasenbergandSimpson(1992)studiedthere-sponseofregionalseismicitytothestaticstresschangeproducedbyLomaPrietaearthquake,andtheresultsshowedthataftershockratesincreasedinre…
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| 收稿时间： | 7 April 2006 |
Large aftershocks triggering by Coulomb failure stress following the 2001 MS=8.1 great Kunlun earthquake |
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| HAO PingFU Zheng-xiang TIAN Qin-jian LIU Jie LIU Gui-ping Center for Analysis and Predication,China Seismological Bureau,Beijing ,China.Large aftershocks triggering by Coulomb failure stress following the 2001 M_S=8.1 great Kunlun earthquake[J].Acta Seismologica Sinica(English Edition),2004,17(1):31-37. |
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| Authors: | HAO PingFU Zheng-xiang TIAN Qin-jian LIU Jie LIU Gui-ping Center for Analysis and Predication China Seismological Bureau Beijing China |
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| Institution: | 1. Center for Analysis and Predication, China Seismological Bureau, Beijing 100036, China
2. Department of Earthquake Monitoring and Predication, China Seismological Bureau, Beijing 100036, China |
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| Abstract: | The great Kunlun earthquake occurred on Nov. 14, 2001 in Qinghai Province, China. Five large aftershocks with magnitude larger than 5.0 occurred near the Kunlun fault after main shock. Calculations of the change in Coulomb failure stress reveal that 4 of 5 large aftershocks occurred in areas with Dsf >0 (10-2~10-1 MPa) and one aftershock occurred in an area with Dsf =-0.56 MPa. It is concluded that the permanent fault displacement due to the main shock is the main cause of activity of large aftershocks, but not the whole cause. |
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| Keywords: | Kunlun great earthquake aftershocks triggering Coulomb failure stress |
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