利用两种模型对宁夏及邻区尾波Q值进行对比研究

英文篇名：CONTRAST AND RESEARCH ON Q VALUE OF SEISMIC CODA IN NINGXIA AND ADJACENT REGIONS WITH TWO MODELS
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：贺永忠 ; 师海阔 ; 朱新运 ; 张立恒
英文作者：He Yongzhong1) ; Shi Haikuo1) ; Zhu Xinyun2 ; 3) and Zhang Liheng1) 1)Zhongwei Seismostation of Earthquake Administration of Ningxia Hui Autonomous Region ; Zhongwei 7550002)Institute of Geophysics ; CEA ; Beijing 1000813)Earthquake Administration of Zhejiang Province ; Hangzhou 310013
中文关键词：Aki模型 ; Sato模型 ; 尾波Q值 ; 对频率依赖性 ; 宁夏及邻区
英文关键词：Aki model ; Sato model ; the Q value of seismic coda ; dependence on frequency ; Ningxia and adjacent regions
出版日期：2012-08-15
机构：宁夏地震局中卫地震台;中国地震局地球物理研究所;浙江省地震局;
年：2012
期：S1
出版单位：大地测量与地球动力学

摘要

分别利用Aki模型和Sato模型,选取2008年1月—2009年12月宁夏地震台网记录的ML≥2.0地震的数字地震波资料,计算了宁夏及邻区平均尾波Q值,并拟合了Q值对频率的依赖关系。结果为:Aki模型为Q(f)=(212±87.62)f0.758 4±0.19;Sato模型为Q(f)=(44.81±15.87)f0.949 1±0.080 5。与国内其他区域相比,两种模型计算结果均显示本区域Q值较低,对频率依赖性较高。研究结果认为两种模型均适合对宁夏及邻区尾波Q值的研究。
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.

引文

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