摘要
前人研究认为宁夏中卫县１７０９年７．５级地震的震中位于中卫县南青驼崖一带，中卫一同心断裂带是地震的发震断层。作者根据对考古资料和前人认为的＂地震形变带＂的分析，结合野外考察，提出中卫一同心断裂带不是该地震的发震断层，从修正后的极震区位置看，北东侧的烟筒山断裂带可能是其发震断层。并指出该次地震对黄河黑山峡大柳树坝址的影响烈度应小于八度。
Previous scholars realized that there was the epicenter of 1709(M-7. 51 Zhongwei earthquake at Qingtouya, South Zhongwei county, Ningxia Hui Autonomous Region, andZhongwei-Tongxin fault zone had been the causative fault. Through the analysis of archaeological material and the so-called 'seismic deformation band', connecting field geological survey, the author proposes that, Zhongwei-Tongxin fault zone should not be the causative fault, but Yantongshan fault zone on the former′s NE side probably should be.It is directed that the influence intensity of the earthquake to daliushu dam site in Heishanxia, Yellow River must have been less than Ⅷ.
出处
《中国地质灾害与防治学报》
CSCD
1994年第S1期161-165,共5页
The Chinese Journal of Geological Hazard and Control
关键词
地震
发震断层
订正
中卫县
earthquake, causative fault, be corrected, Zhongwei county
