CONTRAST AND RESEARCH ON Q VALUE OF SEISMIC CODAIN NINGXIA AND ADJACENT REGIONS WITH TWO MODELS
He Yongzhong 1) ; Shi Haikuo 1) ; Zhu Xinyun 2,3) ; and Zhang Liheng 1)
1)Zhongwei Seismostation of Earthquake Administration of Ningxia Hui Autonomous Region,Zhongwei 755000;
2)Institute of Geophysics,CEA,Beijing 100081;3)Earthquake Administration of Zhejiang Province,Hangzhou 310013
Abstract：With the Aki model and the Sato model separately, adopting digital earthquake wave datas above ML 2.0 from January,2008 to December,2009, which was recorded by Ningxia earthquake nets, the average Q value of seismic coda in relative regions is calculated, and the relation between Q value and frequency is simulated. The results are as follows:with the Aki model:[Q(f)=(212±87.62)f 0.758 4±0.19,the Sato model:Q(f)=(44.81±\{15.87\})f 0.949 1±0.080 5.Compared with other domestic regions, the results with both of the two models show that the Q value of seismic coda is relatively lower, but the dependence on frequency is higher. So it is considered that the tectonic activity and seismicity are rather high in this region. The Q values in different areas are related with geologic tectonic, and reflect seismicity’s features of the corresponding regions．Results of the two models are comparatively identical, it is considered that the two models are both fit for the research on the Q value of seismic coda in Ningxia and adjacent regions.
He Yongzhong ,Shi Haikuo ,Zhu Xinyun et al. CONTRAST AND RESEARCH ON Q VALUE OF SEISMIC CODAIN NINGXIA AND ADJACENT REGIONS WITH TWO MODELS[J]. jgg, 2012, 32(Supp.): 10-17.
