2008年唐古拉5级强震群序列初期特征及震源机制解和发震构造研究  

STUDY ON THE CHARACTERISTICS AND FOCAL MECHANISM SOLUTION AND SEISMOGENIC STRUCTURE OF TANGGULA STRONG EARTHQUAKE SWARM SEQUENCE( Ms≥5.0) IN 2008

作　　者：马玉虎[1] 姚家骏[1] 王培玲[1] 黄浩[1] 

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2015年第4期1-5,共5页Plateau Earthquake Research

摘　　要：通过沱沱河地震台资料分析和探讨了2008年6月9日-7月17日唐古拉5级强震群序列演化的特征及该震群的震源机制解和发震构造，认为唐古拉5级强震群初期的余震序列衰减不正常，余震活动存在平静现象。6次5级地震的震源机制解类型比较相近，以正断型为主，兼有一定的走滑分量。综合震源机制、区域构造及地震烈度，分析认为北北东向的温泉断裂为该组强震群事件的发震构造。The characteristics and focal mechanism solution and seismogenic structure of Tanggula strong earthquake swarm sequence（Ms≥5.0）from Jun. 9th to Jul. 17th in 2008 are analyzed and discussed by the data of Tuotuohe seismic station, the results show that the initial aftershock sequence attenuation of the swarm sequence （Ms ≥5.0） is abnormal, the aftershock activity appeared quiet. The focal mechanism solution types of six Ms ≥ 5.0 earthquakes is similar with normal fault type and strike - slip component. Wenquan fault with NNE direction is the seismogenic tectonic fracture for the sequence.

关 键 词：唐古拉强震群序列 震源机制解 发震构造 

分 类 号：P315.5[天文地球—地震学]