易县台体应变仪山西震群观测报告

Abnormal strain changes prior to the 2006 earthquake swarm in Shanxi province observed at Yixian station

2006年4月3日,山西代县发生震群活动。此次地震前,河北易县台钻孔体应变仪观测到潮汐因子异常变化,中国地震局地壳应力研究所分析人员根据此资料对该地震进行了比较准确的预报。本文报告了变化情况。

An earthquake swarm took place near daixian county,Shanxi province,on April 3,2006.Abnormal strain change in tidal factor was observed at Yixian station in Hebei province.According to this abnormal change,researchers of the Institute of Crustal Dynamics put forth a fairly correct prediction before the swarm.This report describes the abnormal strain change.