2008年8月30日新疆和静M_S5.6地震前形变资料异常分析  

ANALYSIS OF EARTH DEFORMATION ANOMALIES BEFORE HEJING M_S5.6 EARTHQUAKE ON AUG.30,2008

作　　者：孙甲宁[1] 高歌[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2009年第3期329-336,共8页Inland Earthquake

基　　金：国家科技支撑计划子专题(2006BAC01802-02-01);地震科学联合基金(606050);新疆地震科学基金(200904)联合资助

摘　　要：2008年8月30日新疆和静5.6级地震发生在2008年度新疆划定的5.5级左右地震危险区内。对该次地震前天山中段地区定点形变资料出现的异常变化进行了分析和总结,和静5.6级地震前近场定点形变资料存在明显的趋势异常背景,有一定比例的中短期和短期异常显示,无突出短临异常,地震发生在短期异常相对集中的地区。地震发生后所有中短期和短期异常结束,但多数趋势异常仍在持续,因此,北天山西段和南天山东段地区可能仍处于中强地震的中期孕震阶段。Hejing earthquake with Ms5.6 on Aug. 30,2008 occurred in the 2008 earthquake risk region about Ms5.5 in Xinjiang. The author analyzed and summarized the anomalous change of earth deformation data in the western part of northern Tienshan and eastern part of southern Tienshan before Hejing earthquake with Ms5.6. The result showed there were obvious trend anomalies, some medium short term and short term anomalies, no short-imminent anomaly; the earthquake occurred in the area with most medium-short term and short term anomalies. All the medium shortterm and short term anomalies ended after the earthquake, but most trend anomalies still continued. Therefore, there is the possibility of moderately strong earthquake in the western part of northern Tienshan and eastern part of southern Tienshan.

关 键 词：新疆 和静Ms5.6地震 地形变 前兆异常 

分 类 号：P315.72[天文地球—地震学]