| 利用Sato模型对宁夏及邻区尾波Q值的研究 |
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| 引用本文： | 师海阔,朱新运,贺永忠,张立恒.利用Sato模型对宁夏及邻区尾波Q值的研究[J].地震,2011,31(1):118-126. |
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| 作者姓名： | 师海阔 朱新运 贺永忠 张立恒 |
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| 作者单位： | 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; |
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| 摘 要： | 本文利用Sato模型,选取2008-2009年宁夏地震台网记录的121次ML≥2.0地震的数字地震波资料,计算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. 结果表明,与国内其他地区相比,宁夏及邻区Q值较低,对频率f依赖性较高. 结合研究区同期地震活动水平及地震地质构造特征,将研究区划分为四个小震密集区:吉兰泰...
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| 关 键 词： | Sato模型 尾波Q值 对频率依赖性 宁夏及邻区 小震密集区 |
Q Values of Seismic Coda in Ningxia and Adjacent Regions based on Sato Model |
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| SHI Hai-kuo,ZHU Xin-yun,HE Yong-zhong,ZHANG Li-heng.Q Values of Seismic Coda in Ningxia and Adjacent Regions based on Sato Model[J].Earthquake,2011,31(1):118-126. |
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| Authors: | SHI Hai-kuo ZHU Xin-yun HE Yong-zhong ZHANG Li-heng |
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| Institution: | SHI Hai-kuo1,ZHU Xin-yun2,3,HE Yong-zhong1,ZHANG Li-heng1(1.Earthquake Administration of Ningxia Hui Autonomous Region,Zhongwei 755000,China,2.Institute of Geophysics,CEA,Beijing 100081,3.Earthquake Administration of Zhejiang Province,Hangzhou 310013,China) |
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| Abstract: | Based on the Sato model,adopting digital wave datas of 121 earthquake above ML2.0 from January 2008 to December 2009,which were recorded by Ningxia earthquake nets,the average Q value of seismic coda in relative regions is calculated,and the relationship between Q value and frequency is polyfited.The whole region′s result is Q(f)=(44.81±15.87)·f 0.9491±0.0805.Compared with other regions,the Q value of seismic coda in Ningxia and adjacent regions is relatively lower,but the dependence on frequency is higher.According to the regional seismic tectonic characteristics and the homochronous seismic activity,we divided the research region into four concentrated minor-earthquake areas:(a) Ji Lantai,(b) Yin Chuan,(c) Wei Ningtong,(d) Gu Hai,and the calculated Q values of the four regions relatively are:(a) Q(f)=(53.59±17.08)f 0.9148±0.0692,(b) Q(f)=(53.04±16.29)f 0.921±0.0777,(c) Q(f)=(42.25±15.03)f 0.9532±0.0787,(d) Q(f)=(41.65±13.46)f 0.9636±0.0774.Comparison of the polyfited results shows that Q value′s distribution reflects the related region′s tectonic activities and seismic activity. |
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| Keywords: | Q value Sato model Ningxia and Adjacent regions Small earthquake concentration area |
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