上海地震台阵的地震定位方法  

The method of earthquake locating for Shanghai Seismic Array

作　　者：赵镇岭[1] 朱元清[1] 

机构地区：[1]上海市地震局,中国上海200062

出　　处：《地震地磁观测与研究》2002年第2期85-96,共12页Seismological and Geomagnetic Observation and Research

摘　　要：详细介绍了上海地震台阵数据处理软件系统中的地震定位方法 ,用台阵的聚束方法得到地震的方位角和视慢度 ,根据统计得到的视慢度——震中距表推算震中距。并结合了地震台网的定位方法 ,由单台记录的各类主要震相从 J- B走时表得到震中距 ,然后进行地震定位。该定位方法可对近震、远震进行定位处理 。In this paper,we introduce the method of earthquake locating using in software system of data processing for Shanghai Seismic Array in detail.The azimuth angle and apparent slowness of earthquake are obtained by using array beaming method,and the epicenter distance can be calculated from the statistical table of apparent slowness-epicenter distance.Then combining with the method of earthquake locating for seismic network in which,the epicenter distance can be obtained from J-B travel timetable based on different types of main phases of earthquake recorded at a single substation,and locate the earthquake.This method of earthquake locating can be used for locating regional earthquake and teleseism,the depth of focus can be obtained from the phases of deep earthquake.

关 键 词：上海地震台阵 地震定位方法 聚束 视慢度 方位角 震中矩 

分 类 号：P315.6[天文地球—地震学]