Abstract: In this paper, focal mechanisms of 23 moderate and small earthquakes(M_s = 2.0-5.1) in the area of the western Hubei occurring during 1972-1985 are analysed. The results indicate that slip of source fault planes is different, there are mainly normal faults in the southwestern Hubei, while in the northwestern Hubei thrust faults are dominate, suggesting differential tectonic movement in western Hubei.

Key words: Hubei, Focal mechanism, Fault

摘要： 本文分析了1972—1985年鄂西地区23个中小地震(M_s=2.0-5.1)震源机制解。结果表明,震源断层面错动立式其南部区域以正断层型为主,北部区域以逆断层型为主,反映了鄂西地区构造运动的一种差异性。

关键词: 湖北, 震源机制解, 断层