论文部分内容阅读
In this paper,research is conducted on the characteristics of coda Q values of the Jiangsu area,based on the Aki single backscattering model with the waveforms recorded by the Jiangsu digital seismic network. The results show that the Jiangsu area is a high Q value area as a whole,but the Q value differs obviously between different regions,characterized generally as high in the south and low in the north. This study focuses on 4 sub-regions where the stations are relatively dense,the tectonic features are distinguishing,and the calculation results of coda Q0 are fairly concentrated,and obtains the characteristic relationship between the Q value and frequency of the 4 regions. The region from south Jiangsu to the Yangtze River estuary and that around the Maoshan fault zone are the high Q value areas in Jiangsu; the region from central Jiangsu to the waterfront area is the low Q value area in Jiangsu Province,and the Lianyungang region in northern Jiangsu is the moderate Q value area. Comparing the tectonic activity and seismicity of the 4 different Q value sub-regions,there is a certain correlation between Q value,crustal movement and seismicity.
In this paper, research is conducted on the characteristics of coda Q values of the Jiangsu area, based on the Aki single backscattering model with the waveforms recorded by the Jiangsu digital seismic network. The results show that the Jiangsu area is a high Q value area as a whole, but the Q value differs obviously between different regions, characterized generally as high in the south and low in the north. This study focuses on 4 sub-regions where the stations are relatively dense, the tectonic features are distinguishing, and the calculation results of coda Q0 are fairly concentrated, and obtaining the characteristic relationship between the Q value and frequency of the 4 regions. The region from south Jiangsu to the Yangtze River estuary and that around the Maoshan fault zone are the high Q value areas in Jiangsu ; the region from central Jiangsu to the waterfront area is the low Q value area in Jiangsu Province, and the Lianyungang region in northern Jiangsu is the moderate Q value area. Co mparing the tectonic activity and seismicity of the 4 different Q value sub-regions, there is a certain correlation between Q value, crustal movement and seismicity.