Location Accuracy of the China National Seismograph Network Estimated by Repeating Events  

作　　者：Jiang Changsheng Wu Zhongliang 

机构地区：[1]Institute of Geophysics, China Earthquake Administration, Beijing 100081, China [2]College of Earth Science, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Earthquake Research in China》2006年第1期67-74,共8页中国地震研究（英文版）

摘　　要：Regionalized location accuracy of the China National Seismograph Network was estimated using the results obtained by studying “repeating earthquakes" or “doublets" in and around China by Schaff and Richards (2004). It is assumed that the “repeating events" or “doublets" are separated by no more than 1km, and the network measured apparent distance X of “doublets" indicates the order of magnitudes of the location error. It is observed that the average location accuracy of the China National Seismograph Network, as represented by average X value, is in the order of magnitudes of 10km, and is larger in the Qinghai-Xizang (Tibet) Plateau, western and northern Xinjiang, and eastern Inner Mongolia.Regionalized location accuracy of the China National Seismograph Network was estimated using the results obtained by studying ＂repeating earthquakes＂ or ＂doublets＂ in and around China by Schaffand Richards （2004）. It is assumed that the ＂repeating events＂ or ＂doublets＂ are separated by no more than 1 km, and the network measured apparent distance X of ＂doublets＂ indicates the order of magnitudes of the location error. It is observed that the average location accuracy of the China National Seismograph Network, as represented by average X value, is in the order of magnitudes of 10km, and is larger in the Qinghai-Xizang （Tibet） Plateau, western and northern Xinjiang, and eastern Inner Mongolia.

关 键 词：Repeating earthquakes Earthquake location Seismograph network 

分 类 号：P315.7[天文地球—地震学]