应用数字地震台网资料求解广东地区的环境剪应力场  

Tectonic environment shear stress field in Guangdong area calculated with the data of GDDSN

作　　者：闻则刚[1] 胡秀敏[1] 何璟琳[1] 康英[1] 

机构地区：[1]广东省地震局,广东广州510070

出　　处：《华南地震》2000年第4期54-59,共6页South China Journal of Seismology

摘　　要：应用广东数字地震台网的数字化地震资料 ,经过预处理 ,获得每次小地震在观测点处的峰值加速度、峰值速度和峰值位移 ,再利用适当的衰减模式 ,将其换算成震源处的值。最后利用它们与构造环境剪应力场的关系 ,计算出广东地区的构造环境剪应力场。结果表明 ,广东地区的总体剪应力值较低 。In this paper, peaks of acceleration, velocity and displacement at observation point are gotten based on the data of Guangdong Digital Telemetry Seismograph Network, and then they are transformed to the values at the focal through fitted attenuation model for seismic wave. And then the tectonic environment shear stress field in Guangdong area calculated by the relations between these values and shear field. The results show that the tectonic environment shear stress field in Guangdong area is low on the whole, so the possibility of occurring moderately strong earthquake is small.

关 键 词：数字化地震台网 数字地震图 环境剪应力场 广东 

分 类 号：P315.78[天文地球—地震学] P315.1[天文地球—固体地球物理学]