泾阳5.2级地震的前兆异常  

Precursor of Jingyang Earthquake with M_L 5.2

作　　者：王卫东[1] 张永志[1] 王璇[1] 孟智民[2] 

机构地区：[1]长安大学地质工程与测绘工程学院,陕西西安710054 [2]陕西省地震局,陕西西安710068

出　　处：《地球科学与环境学报》2006年第4期78-80,共3页Journal of Earth Sciences and Environment

基　　金：中国地质调查局项目(1212010440410);陕西省科技项目(95K12G9)

摘　　要：研究了泾阳5.2级地震前的地壳形变、地下水化学参数、地震分布图象和地震波速比的变化特征,结果表明,在震前该区地壳形变、地下流体和地震活动表现出长期、中期和短期的不同特征,具有一定的前兆异常,作出地震预测是可能的。By studying the temporal eharaeteristies of crustal deformation, u-nderground hydroehemieal parameters, distributions of earthquakes and ratio of P-wave to S-wave before Jingyang earthquake with ML = 5.2, it is found that the crustal deformation, underground fluid and seismieity in this region exhibits different properties in long, medium and short terms before the earthquake. Thus, some anomalies do exist before the earthquake, and the forecast of the earthquake may be made.

关 键 词：泾阳地震 地震前兆 地下流体 地震空区 地震预测 

分 类 号：P315.7[天文地球—地震学]