利用地震波振动持续时间测定“矿震”的震级

DETERMINATION OF MAGNITUDE OF MINE QUAKES WITH SEISMIC WANE DURATION

本文根据振动持续时间与震级的密切关系,采用吉林省辽源矿区大量矿震资料,求得本地区水平向矿震持续时间测定震级的经验公式: M_(F-P)=0.216+1.237log(F-P) 经误差分析和抽样检验,结果表明用持续时间(M_(F-P))求得震级比甲振幅求震级的标准误差要小,另外还有些独特的优点。

According to the relation between shoek duration and magnitude, a experiential formula to detemine magnitude can be given as follows: MF-P=0.216+1.237 lg(F-P), where F-P is wave duration of horizontal record