异常地震 meaning in English

anomalous earthquake

Through the related analysis for the strengthing earthquake activity phenomenon and the output of coal mine in huating region , pingliang , gansu province , from 2001 , and study on the historical mineral earthquake data in china as well , the conclusion that the increased earthquake activity phenomenon is caused by mining in huating region is taken
摘要通过对甘肃省平凉市华亭地区2001年以来出现的异常地震活动现象和该区矿产开采情况的相关分析和我国历史矿震资料的研究，得到了该地区出现的异常地震活动现象是由矿山开采引起的结论。