泾阳5.2级地震前后视应力变化特征  

Features of Apparent Stress Changing before and after the Jingyang, Shaanxi, M_L5.2 Earthquake

作　　者：王卫东[1] 彭建兵[1] 张永志[1] 刘国华[1] 邵广周[1] 李少睿[2] 

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

出　　处：《地震研究》2005年第3期274-276,共3页Journal of Seismological Research

基　　金：国家863计划A类课题(2002AA615050);中国地质调查局项目"汾渭盆地地裂缝与地面沉降调查与监测"(1212010440410)联合资助.

摘　　要：利用陕西西安数字地震台网的宽频带数字地震记录,计算了泾阳5.2级地震前后陕西地区地震视应力的变化,得到了该地区的视应力平均值,并讨论了泾阳5.2级地震前后地震视应力的演化特征及视应力与震级的关系。Using the wide-frequency digital seismic data recorded by Xi’an digital seismic network, the apparent stresses before and after the Jingyang earthquake with M_L5.2 were calculated. The average value of the apparent stresses in the Shaanxi area was determined. The features of the apparent stress changing before and after the earthquake and the relationship between apparent stress and magnitude were then discussed.

关 键 词：视应力 地震矩 西安数字地震台网 

分 类 号：P315.1[天文地球—地震学]