公元1022年大同云、应二州地震及其地质背景考证

文章对公元1022年大同云、应二州6.5级地震及其地质背景进行了考证。笔者认为,此次地震的震中位于黄花梁南缘构造复杂部位,即北纬39°32′,东经113°00′附近,其极震区包括现大同、应县、怀仁和山阴县等广大地区;这次地震是山西强震带内的一次历史强震,是在统一的华北区域构造应力场控制下发生的。考证这次地震的震情和地质背景,对研究大同盆地地区地震发生规律和特点以及对未来地震的预测和预报,具有重要的实际意义。

INVESTIGATION OF THE EARTHQUAKE OF THE YEAR 1022 IN YUN AND YING PREFECTURES AND ITS GEOLOGICAL BACKGROUND

This paper investigates the Year 1022 earthquake of magnitude 6.5 on the Richter scale in Yun and Ying prefectures and discusses its geological background.It is held that the earthquake's epicentre was located on the structure-complicated position of the southern fringe of the Huanghuagan Liang at the latitude 39?2' N and longitude 113#00' E.The strongest seismic areas included Datong, Yinxian ,Hueying and Shanyin counties and was under the control of unified tectonic stress field in North China. It is of practical significance to investigate this eartnquake and its geological background because it can help to understand the regularity of the earthquake which occurred in the Datong basin so as to forecast the coining earthquakes.