新疆伽师强震群部分地震前的序列频度异常及其临震预报

THE SEQUENCE FREQUENCY ANOMALIES BEFORE SEVERAL EARTHQUAKES OF THE JIASHI STRONG EARTHQUAKE SWARM AND RELATED IMPENDING EARTHQUAKE PREDICTION

１９９７年１～５ 月新疆伽师发生ＭＳ５．０～６．６地震１４次。在１ 月２１日之后发生的１２ 次ＭＳ＞５．０ 地震中，有５ 次（组）地震震前出现了序列异常平静现象。在其中３ 次（组）地震前，新疆地震局巴楚地震台根据其序列频次异常提出了临震预报意见，结果对应较好。说明就此次伽师强震群而言。

From Jan.1997 to May 1997, 14 M S5.0～6.6 earthquakes occurred in Jiashi ,Xinjiang.The anomalous phenomena of sequence calmness appeared before 5(groups) of 12 events (M S ≥5.0) that occurred after Jan.21. The Bachu seismostation of XSB gave 3 of them the impending earthquake predictions based on this kind of anomaly feature,which responded well to the earthquakes that occurred later. It shows that as for the Jiashi strong earthquake swarm, the featur of anomalous calmness of minor eartquakes has better impending earthquake prediction efficiency in deed.