新疆沙湾5.2级地震地下流体前兆异常特征的分析  

CHARACTERISTICS OF UNDERGROUND FLUID ANOMALY BEFORE SHAWAN EARTHQUAKE (M_s=5.2), XINJIANG REGION

作　　者：王道[1] 张洪斌[1] 许秋龙[1] 王玉兰[1] 李玉芳 段巍 

机构地区：[1]新疆维吾尔自治区地震局,中国乌鲁木齐830011

出　　处：《地震》1997年第3期297-303,共7页Earthquake

摘　　要：列举了1996年1月9日新疆沙湾5．2级地震地下流体前兆观测的最新资料，总结了地震孕育由稳态进入非稳态过程中流体异常的特征。结果表明，地下流体前兆异常以中短期为主，主要集中分布在距震中200km范围内，异常形态和幅度复杂多样，并对这次地震的跟踪预测、前兆的可靠性问题进行了讨论。New data on underground fluid precursors in Northern Tianshan zone before Shawanearthquake (Ms = 5.2), in Xinjiang region are summarized in the paper. By analyzing thecharacteristics of the precursory developments from stable to unstable state, it is foundthat the medium- and short-term fluid precursors were concentrated within 200 km fromthe epicenter to observation stations and appeared with different types andamplitudes. Finally, some problems on the tracing prediction of the earthquake andprecursory reliability are discussed.

关 键 词：地下水 地震前兆 地震 震级 新疆 

分 类 号：P315.7[天文地球—地震学]