2008年3月30日肃南Ms5．0地震前兆异常特征研究

Study on the anomalous precursor characteristic of 30 March, 2008 Sunan Ms 5. 0 earthquake

对张掖中心地震台近期的前兆资料进行全面论证，并结合祁连山地震带地震活动性特征，对2008年3月30日肃南5．0级地震前兆异常特征进行研究。结果认为：此次地震的发生基本符合祁连山地震带地震活动的周期性特征，部分前兆资料有明显的短临异常显示。

A comprehensive analysis on the precursory information of seismicity in Zhangye Seismic Station was carried out. Considering the characteristic of seismic activity in Qilian Mountain earthquake zone, the anomalous precursory characteristic of 30 March, 2008 Sunan Ms 5.0 earthquake was studied. The conclusion is that： the occurrence of this earthquake basically accords with the characteristic of seismic activity period in Qilian Mountain earthquake zone. And part of precursor information clearly shows the short-term anomaly.