| 浙江皎口水库地震震源参数研究 |
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| 引用本文： | 于俊谊.浙江皎口水库地震震源参数研究[J].地震地磁观测与研究,2011,32(2):19-24. |
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| 作者姓名： | 于俊谊 |
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| 作者单位： | 中国杭州,310013,浙江省地震局 |
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| 基金项目： | 浙江省科技计划项目2007C33060 |
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| 摘 要： | 利用浙江省区域数字地震台网记录的皎口水库地震波资料,采用Brune(1970)模式,通过几何扩散校正、介质衰减校正、仪器校正等,将速度记录谱归算为震源位移谱,使用遗传算法计算拐角频率及零频极限,进而计算震源半径、地震矩等小震震源参数,系统分析各种参数之间的关系.分析2009年9月-2010年1月间ML ML 1.0-3...
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| 关 键 词： | 水库地震 震源参数 相互关系 |
Hypocentral parameters research of Jiaokou reservoir area in Zhejiang |
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| Yu Junyi.Hypocentral parameters research of Jiaokou reservoir area in Zhejiang[J].Seismological and Geomagnetic Observation and Research,2011,32(2):19-24. |
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| Authors: | Yu Junyi |
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| Institution: | Yu Junyi (Earthquake Administration of Zhejiang Province, Hangzhou 310013, China) |
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| Abstract: | Using Brune model （1970） and the seismic data of Jiaokou reservoir recorded by the regional digital seismic station of Zhejiang Province, we transferred the velocity record spectrum into hypoeenter displacement spectrum by geometry diffusion correction, dielectric at- tenuation correction and instrumental correction. The corner frequency and zero frequency were calculated using genetic algorithm. Then hypocentral parameters including hypocentral radius and seismic moment were calculated and the relationships between them were analyzed systematically. 28 regional earthquakes of ML 1. 0--3. 3, occurred between 2009-09 and 2010-01 were used in this study. The results show that the seismic moments of these earth- quakes are 10^11--10^13 N-m and rupture radius are 110--319 m. There are log-linear relation- ships between seismic moments and corner frequency, seismic moment and body-wave mag- nitude and semi-log-linear relationships between moment magnitude and body-wave magnitude. They can be expressed： 1gM = 0. 01177R ＋ 10.2,1gM = 1. 009ML ＋ 10.5,Mw = 0. 667ML ＋ 0. 98534. The seismic stress drops ranges from 0.02 -2.05 MPa and some corre- lation shows between stress drop and hypocenter radius. |
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| Keywords: | reservoir earthquake hypocentral parameters relationship |
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