在山西河津Ms4.8地震前地处太行山前断裂南延部位的荥阳台水管观测,记录到显著的高频抖动异常信号.异常出现于2009年12月初,延续到2010年1月27日,具有间歇性,与地质构造有关,有别于气象因素导致的异常.同时,通过对河津地震前河南、山西交界地区地震活动情况的分析,说明此次异常系河津地震前的前兆反应.%High frequency vibrating signal was recorded in Xingyang station which located in south part of taihang piedmont fault depression belt before Hejin earthquake with Ms 4. 8. Different from signal caused by weather condition, anomaly signal was intermittent and appeared from December 2009 to January 27th 2010. By analyzing seismic activity in the boundary regions between Henan and Shanxi province before earthquake in Hejin, result showed that anomaly signal was earthquake forerunner.
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