由微(小)震综合断层面解推测林县地区的现代应力场
PRESENT STRESS FIELD INFERRED FROM FAULT-PLANE SOLUTION OF MICROEARTHQUAKES IN LIN-XIAN REGION, HENAN PROVINCE
-
摘要: 本文利用短期临时台网对林县微(小)震活动监测的资料,经过统计处理求出微(小)震综合断层面解,推测林县地区现代应力场的状况:主压应力(P)轴方向为78°,仰角49°;主张应力(T)轴方向为330°,仰角14°。最后简要讨论了林县地区应力场与华北地区区域应力场的关系。Abstract: Based on the microseismic data in Lin-xian region observed by temporary station network, the Composite fault plane solution of micro-earthquakes has been obtained with stereographic projection of first p-wave motion。The present stress field inferred in Lin-xian region is as follows: the direction of maximum pricipal stress is of NE78°, and its angle of elevation is of 49°;the direction of minimum principal stress is of NW330°, and its angle of elevation is of 14°.In addition, the relationship between Lin-xian region and North China stress fields has been briefly discussed.
-
[1] 王泽皋等,林县小震群,地震,2,1981. [2] 杨理华、李钦祖,华北地区地壳应力场地震出版社,1980。 [3] 六省(市)震源机制小组,由震源机制解推断苏鲁皖豫地区的现代构造应力场,地震地质,8, 1. 1981。 [4] 赵景珍等,河南林县4.7级地震,地震学刊,1,1981。 [5] 朱世龙,太行山麓淇县一新乡一焦作地区现今构造应力状态与地震活动关系,地震地质,1984。 [6] 高名修,华北块断构造区的现代引张应力场,地震地质,1, 2, 1979。 -

计量
- 文章访问数: 1560
- HTML全文浏览量: 310
- PDF下载量: 87