青藏高原东北缘及其邻区的地壳结构与地震关系初探  

THE RELATIONSHIP BETWEEN CRUST STRUCTURE AND EARTHQUAKES IN THE NORTHEAST VERGE OF QINGHAI—XIZANG PLATEAU AND ITS NEIGHBORHOOD

作　　者：周民都[1] 赵和云[1] 马钦忠[1] 钱家栋[2] 

机构地区：[1]国家地震局兰州地震研究所 [2]国家地震局分析预报中心

出　　处：《西北地震学报》1997年第1期58-63,共6页Northwestern Seismological Journal

摘　　要：用人工地震测深资料及天然地震反演结果给出了东经９６°～１０８°，北纬３２°～４０°范围内的莫霍面埋深图，并讨论了莫霍面轮廓与中强地震发生的关系。结果表明，中强地震多发生在地壳厚度急剧变化。Based on DSS and natural earthquake data, the Moho contour figure is given for 96°～108°E, 32°～40°N area in this paper. Moreover, the relationship between Moho and medium strong earthquake is discussed also. The conclusion is that medium strong earthquake generally occurs in the zone where crustal thickness sharply varies and in its variation corner or is related to lower velocity zone in middle crust top.

关 键 词：地壳结构 莫霍间断面 青藏高原 强震 地震 

分 类 号：P315.2[天文地球—地震学] P313.2[天文地球—固体地球物理学]