地震学报Issue(6)：937-947,11.DOI:10.11939/jass.2015.06.005
临汾强震区地壳结构及发震背景研究
Crustal structure and background of earthquake occurrence in Linfen meizoseismal area
摘要
Abstract
Using the velocity profile of the Zhucheng--Yichuan deep seismic sounding (DSS)profile as a constraint to fitting the high precision gravity data along the profile,we processed the plane Bouguer gravity anomaly in Linfen meizoseismal area,and obtained the crustal density structure and distribution of the plane gravity anomaly in Linfen meizoseismal area.And then we analyzed the crustal structure and tectonic settings. In combination with previous research results,it is believed that there were more plastic crustal media in Lin-fen meizoseismal area,and the Hongtong and Linfen historical earthquakes all took place on the elastic-plastic transitional boundary.Moreover,there were differences between north and south sides of Linfen depression in local tectonic environment.Therefore,the Linfen and Hongtong earthquakes occurred under the regional stress field with different occurrence time,epicenter location and magnitude.关键词
临汾强震区/深地震测深剖面/重力异常/发震背景Key words
Linfen meizoseismal area/deep seismic sounding profile/gravity anomaly/background of earthquake occurrence分类
天文与地球科学引用本文复制引用
李勇江,方盛明,秦建增,罗翔飞,黄超杰..临汾强震区地壳结构及发震背景研究[J].地震学报,2015,(6):937-947,11.基金项目
国家自然科学基金项目（41274113）资助． （）
