新疆数字遥测地震台网使用地震定位程序的比较与讨论

COMPARISON AND DISCUSSION ON SEISMIC LOCATING PROGRAMS USED IN THE DIGITAL TELEMETERING SEISMIC NETWORK

基于新疆数字遥测地震台网目前使用的地震数据分析软件EDAS-ISA挂接的GENETIC(遗传法)定位程序,选取新疆数字遥测台网记录的45次地震事件,就遗传法定位程序的定位结果与新疆日常地震目录结果作了对比分析。结果表明∶对于台站分布合理并且最近的台站到达地震事件的震中矩≤3度,遗传法定位结果与新疆日常地震目录比较吻合,定位效果较好。对于边界地震和台站稀少区,定位结果偏差较大,定位效果不理想。

The authors have compared the GENETIC locating resrults of 45 seismic events recorded by the digital telemetering network with daily seismic catalog in Xinjiang, and the results show that the locating results colculated by GENETIC soft are consisted well with the daily seismic catalog if the surrotmded stations have a good distribution and the epicenter distance to the nearest station is less than 3 degrees. Otherwise, the deviation of locating results is large, and the locating effect is not well.