安徽及邻区构造环境剪应力场的研究  

The study about tectonic ambient shear stress field in Anhui and near area

作　　者：刘东旺[1] 黄显良[1] 

机构地区：[1]安徽省地震局,中国合肥230031

出　　处：《地震地磁观测与研究》2002年第3期20-25,共6页Seismological and Geomagnetic Observation and Research

摘　　要：利用安徽省7个台站近2年来数字化地震观测资料,根据地震发生的断裂力学模式和震源谱理论,计算了安徽及邻区42个中小地震的构造环境剪应力值,并对应力场分布状况及变化情况进行了分析研究。结果表明,安徽及邻区目前构造环境剪应力场水平总体上相对较低,但局部地区已具备发生中等地震的应力场条件。In this paper, using the digital seimic data recorded by 7 Anhui seismological stations in two years, we calculate the values of tectonic ambient shear stress value about 42 earthquakes in Anhui and near area according to break mexhanics model of earthquake happening and theory of hypocenter spectrum. We also study the distribution and variation of the stress field. The result indicates that tectonic ambient shear stress field in Anhui and near area is lower as a whole, but in some local area, the stress condition for the occurrence of moderate earthquke is exist.

关 键 词：构造环境剪应力场 数字化地震资料 安徽 断裂力学模式 震源谱理论 

分 类 号：P315.72[天文地球—地震学]