湖北国家测震台站面波震级偏差分析
Deviation Analysis of Surface Wave Magnitude of Hubei National Seismometer Station

通过对恩施地震台、钟祥地震台、麻城地震台的面波震级与中国地震台网的发布震级进行震级偏差分析，结果表明，恩施地震台的面波震级与中国地震台网的发布震级一致性更好；作为优先发布震级时，钟祥地震台优选Ms震级，麻城地震台优选Ms₇震级，恩施地震台Ms震级和Ms₇震级都可以。恩施地震台、钟祥地震台、麻城地震台的Ms震级和Ms₇震级偏差受震级大小、震中距的影响不大，麻城地震台Ms震级对于WWS向(225？ ≤ α < 270？)的地震事件映震能力较差，恩施地震台、钟祥地震台、麻城地震台的Ms、Ms₇震级对深源地震的映震能力均较差。
The difference between the surface wave magnitude of Enshi Seismic station, Zhongxiang seismic station and Macheng seismic station and the published magnitude of China seismic network is analyzed. The results show that the surface wave magnitude of Enshi seismic station is in better agreement with the published magnitude of China seismic network; As the priority to release the earthquake magnitude, the Zhongxiang seismic station preferably Ms magnitude, Macheng seismic station preferably Ms₇ magnitude, Enshi seismic station Ms magnitude and Ms₇ magnitude can be. The difference between Ms magnitude and Ms₇ magnitude of Enshi Seismic Station, Zhongxiang Seismic Station and Macheng Seismic Station is not affected by magnitude and epicentre distance. The Ms magnitude of Macheng seismic Station has poor seismic mapping ability for seismic events in the WWS direction (225？ ≤ α < 270？). The Ms and Ms₇ magnitudes of the Enshi, Zhongxiang and Macheng seismic Station have poor mapping ability to deep source earthquakes.