采用LOCSAT和HYPOSAT方法对东北深源地震定位分析

Comparative analysis for locating deep-source earthquakes in north-east China using LOCSAT and HYPOSAT

采用MSDP软件中LOCSAT和HYPOSAT定位方法,从震源偏差、残差分布方面,对2007年7月吉林测震台网运行以来记录到的20次东北地区m_b(m_B)≥4.0深源地震资料进行对比分析。结果显示,对于东北深源地震,HYPOSAT定位方法更佳。

20 mb （mB ）≥4.0 deep-source earthquakes,recorded after July 2007 when Jilin Seismic Network was set up,are located by LOCSAT and HYPOSAT,respectively,of MSDP system.Then the results,such as earthquakes′ epicenter and residual distribution,are obtained.The result shows that HYPSAT locating method should be adopted preferenctially to locating deep-source earthquakes in north-east China than LOCSAT.