山西大同数字地震台网网外中强地震的响应能力

选取2002～2006年5月,山西大同数字地震台网记录到对于本台网不同方位的,较大的,具有典型的区域(地区)代表意义,已速报的网外ML3～5地震,统计对比分析了该地震参数精度与中国地震局目录参数之差及地震发生后的响应能力.并对震中参数偏差较大的地震重新做了分析、鉴别处理,认为本台网对网外震中距500 km以内的4级左右地震具有较好的监测响应能力.

Response ability for medium-strong earthquakes occurred outside the Digital Seismic Network of Datong of Shanxi Province

Based on some typical and quick reported regional earthquakes with magnitudes between 3 and 5 and different azimuths, occurred outside the Digital Seismic Network of Datong of Shanxi Province and recorded by the network from 2002 to May 2006, the differences in earthquake parameters between those determined by the network and catalogue from China Earthquake Administration are compared and analyzed statistically. The response ability of the network after an event is evaluated. Reanalysis and judgment are made for those events with larger differences in epicenter. The conclusion is that this network is still with better monitoring and response ability for those earthquakes around magnitudes of 4 and occurred outside the network but within 500 km.