1998年泾阳4.8级地震的一些特征  

SOME CHARACTERISTICS OF THE JINGYANG M_S 4.8 EARTHQUAKE IN 1998

作　　者：吴富春[1] 段锋[1] 柯昌安[1] 张春生[1] 董星宏[1] 

机构地区：[1]陕西省地震局,陕西西安710068

出　　处：《西北地震学报》2000年第1期53-57,共5页Northwestern Seismological Journal

基　　金：中国地震局合同制项目

摘　　要：分析了 1 998年泾阳MS4.8地震的一些特征 .该次地震序列类型属孤立型 ,与陕西关中地区历史强震多以主 余震型为主的特征不同 .震源机制解显示 ,该次地震的断层错动以左旋走滑为主 ,主压应力方向为NE～SW 。Some characteristics of the Jingyang M S4.8 earthquake in 1998 are analysed.The results show that the earthquake is during weaker seismicity in Guanzhong,Shaanxi.Sequence of the earthquake is isolated type and differs from sequences of greater part of historic strong earthquakes in Guanzhong area which are mainshock aftershock type.The sequence type of the earthquake is very scarce in Chinese continent.The focal mechanism solution of the earthquake shows that the seismogenic fault is left lateral slip one,the principal stress orientation is NE～SW and identical with the direction of regional stress field of northern China.

关 键 词：陕西 孤立型序列 震源机制解 泾阳地震 地震 

分 类 号：P315.3[天文地球—地震学] P315.2[天文地球—固体地球物理学]