地震学报Issue(6)：997-1009,13.DOI:10.3969/j.issn.0253-3782.2014.06.002
2008年新疆于田 MS7．3地震对后续地震的完全库仑应力触发作用
Impact of complete Coulomb failure stress changes of the 2008 Xinjiang Yutian MS7.3 earthquake on the subsequent earthquakes
摘要
Abstract
Based on the discrete-wavenumber method,we calculated the com-plete Coulomb failure stress (CFS)changes of near-field region induced by 21 March 2008,Yutian,Xinjiang,MS 7.3 earthquake,and analyzed their impact on the aftershocks.We also get the dynamic CFS changes of the Yutian earth-quake produced at the epicentral location of the Wuqia MS 6.8 earthquake on 5 October 2008.The calculated results show that the evolution of CFS change patterns lasted for almost 60 s,and trigger ratio of aftershocks by the main shock is above 90%.Dynamic CFS change patterns can better explain the distri-bution of aftershocks.Complete CFS changes results of aftershocks indicate that the dynamic CFS changes are far greater than static ones.The maximum dynamic CFS change at the epicenter of Wuqia earthquake is 0.12 MPa,sugges-ting that the Wuqia event may be triggered by dynamic Coulomb stresses induced by the Yutian event,but the triggering effect is unremarkable and static CFS changes have little influence on it.关键词
于田地震/完全库仑破裂应力变化/动态应力触发/静态应力触发Key words
Yutian earthquake/complete Coulomb failure stress change/dynamic stress triggering/static stress triggering分类
天文与地球科学引用本文复制引用
冀战波,王琼,王海涛,解朝娣..2008年新疆于田 MS7．3地震对后续地震的完全库仑应力触发作用[J].地震学报,2014,(6):997-1009,13.基金项目
地震科技星火计划项目（XH13027）和新疆地震科学基金（201303）联合资助． （）
