常用震级在湖北及其周边的适用性分析

Applicability Analysis on Common Magnitudes in Hubei Province and Its Neighboring Region

2007-01~2014-12湖北及其周边300km范围内共发生ML≥3.0地震306次,对其中180个地震波形的近震震级、体波震级和面波震级进行测定。通过对各种震级偏差分布分析发现,近震震级更适合作为湖北省的速报震级。

Since its construction in 2006, the Hubei seismic network has generated much seismic waveform data. During eight years from 2007 to 2014 there were 306 earthquakes with magnitude ML≥3.0 in Hubei province and the neighboring 300 kilometers. We re-measured the near magnitudes, body wave magnitude and surface wave magnitude of 180 of these events. According to analysis the distribution of magnitude deviation frequency, we find that using near magnitudes as speed magnitudes is more applicable in Hubei province.