摘要
利用地震深度震相sPn波的一些特征和2008～2012年安徽数字测震台网的波形资料,对发生在安徽及邻区M≥3.0级的地震进行了sPn震相分析,并用sPn震相计算的震源深度与目前我国台网运用较多的单纯型法及国家权威测震机构的定位结果进行了对比。结果表明,利用近震震相sPn-Pn波的方法测定该区域内的近震深度,有助于校正台网的定位精度,对地震的震源参数和破坏程度准确把握都具有重要意义。
This paper has conducted a sPn phase analysis of earthquakes （M ≥13.0） in Anhui and its adjacent area using characteristics of depth phase sPn and waveform data of Anhui digital seismic network from 2008 to 2012. And the results of focal depth calculated by sPn phases are contrasted with simplex method widely used in seismic networks and positioning results issued by national authority seismological agency. The results show that it helps to correct positioning accuracy of station network by measuring near-field earthquake depth using sPn-Pn wave of near-field seismic phase, which is also of great significance in accurate calculation of seismic source parameters and earthquake damage ratings.
出处
《华南地震》
2012年第3期141-147,共7页
South China Journal of Seismology
基金
安徽省大别山监测预报实验场项目
作者简介
程鑫，男，1983年生，助理工程师．主要从事地震监测等工作E—mail：10301chengxin@163．com
