【摘要】 主要研究2012年6月30日新源、和静6.6级地震前,震中附近的观测台站观测到了丰富的趋势异常和部分中短期异常。分析结果表明,①震前存在9项趋势转折异常,异常比例为40.9%,这些异常时间上具有同步性,这表明,震前背景性异常突出;②震前观测到6项中短期前兆异常,异常比例仅为27.3%,中短期异常主要分布在200～300 km范围内;③石场、精河水平摆、榆树沟水管、阜康伸缩仪和克拉玛依钻孔倾斜记录到的中短期异常,其共同特点是异常幅度大,克拉玛依出现的突变异常具有短临异常性质,部分中短期异常具有重复性。更多还原

【Abstract】 Medium-short term and trend anomalies were recorded by observation station before earthquake with MS6.6 on June 30th,2012.The result shows: ① about nine trend anomalies are synchronism before earthquake,the percentage of anomaly is about 40.9% which indicates background anomaly is outstanding;② about six medium-short term anomalies mainly located at range of 200-300 km around the epicenter,the percentage of anomaly is about 27.3%;③ medium-short term anomalies were recorded in Shichang、Jinghe、Yushugou、Fukang and Karamay station,the common features of these anomalies are with a large amplitude and part of them have repeatability.Abrupt change appeared in Karamay station showed short term anmaly.更多还原