新疆阿克陶M_S6.7地震前喀什地磁资料变化分析与探讨

GEOMAGNETIC ANOMALY OF GEOMAg NETIC IN KASHI STATION BEFORE AKETU EARTHQUAKE WITH M_S6.7

运用地磁垂直分量日变幅逐日比、地磁加卸载响应比、地磁垂直分量归零法及地磁谐波振幅比,结合回顾震例及前人研究成果,对喀什地磁基准台地磁观测资料进行分析。结果表明,2016年11月25日在新疆阿克陶M_S6.7地震前,该台地磁资料出现明显的异常变化,属于中短期异常。

Using the geomagnetic Z component daily ratio, geomagnetic load-unload response ratio, fitting curve of return to zero , harmonic wave amplitude ratio methods, this paper analyzed geomagnetic anomalies before Aketao earthquake. The geomagnetic anomalies proved to be middle and short term anomalies.