新疆测震台网常用地震定位方法对比

摘要

In this paper,49 earthquakes(ML ≥ 3.0)recorded by Xinjiang Seismic Network are selected. In the selection of same stations and seismic phase data,then using location method of simplex、LocSat and HypoSat for selecting earthquakes. From epicenter location and positioning residual to compare positioning effect,the results showed that: for the earthquakes surrounded good by some stations,three kinds of positioning methods are all good; for the shallow earthquakes surrounded bad by some stations,LocSat positioning method is better than others; for the deep-focus earthquakes,HypoSat positioning method is the best of all.%选取2009年新疆测震台网记录的49个 ML ≥3.0地震，选用相同地震台及相同震相到时数据，分别采用单纯形、LocSat 和 HypoSat 定位方法重新定位，从定位残差和震中位置对各定位效果进行对比，结果表明：对地震台站包围好的浅源地震，3种定位方法均适合；对地震台站包围不好的浅源地震，LocSat 定位方法效果较好；对深源地震， HypoSat 定位方法效果较好。