| 河北文安Ms5.1地震前首都圈及邻区震源动力学参数时空变化特征 |
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| 引用本文： | 陈学忠,李艳娥,郭祥云.河北文安Ms5.1地震前首都圈及邻区震源动力学参数时空变化特征[J].地震,2011,31(4):15-25. |
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| 作者姓名： | 陈学忠 李艳娥 郭祥云 |
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| 作者单位： | 中国地震局地球物理研究所,北京,100081 |
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| 基金项目： | 地震行业科研专项(200708023) |
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| 摘 要： | 本文根据近震源条件下,由北京数字遥测地震台网观测到的波形资料,利用Brune模式,得到了2002年1月至2006年6月期间首都圈及邻近地区989次ML≥2.0地震的震源谱,测定了它们的拐角频率和零频幅值.通过相关计算公式,得到了破裂半径、地震矩、地震能量、应力降、视应力等震源动力学参数.分析了这些动力学参数的标度关系以...
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| 关 键 词： | 文安地震 首都圈 震源动力学 时空变化 |
Temporal-spatial Variations of Focal Dynamic Parameters in the Capital Circle and Surrounding Areas before the 2006 Wen'an MS5.1 Earthquake in Hebei Province |
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| Chen Xue-zhong,Li Yan'e,Guo Xiang-yun.Temporal-spatial Variations of Focal Dynamic Parameters in the Capital Circle and Surrounding Areas before the 2006 Wen'an MS5.1 Earthquake in Hebei Province[J].Earthquake,2011,31(4):15-25. |
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| Authors: | Chen Xue-zhong Li Yan'e Guo Xiang-yun |
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| Institution: | (Institute of Geophysics,CEA,Beijing 100081,China) |
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| Abstract: | Based on near-source conditions,we used waveform data observed by the Beijing Digital Telemetry Seismic Network and obtained source spectrum,corner frequency and zero frequency amplitude values of 989 earthquakes with magnitude larger than ML2.0 occurred in the capital circle of China and surrounding area from January 2002 to June 2006 by the Brune model.Some relevant formulas had been used for calculation of a few focal dynamic parameters,such as rupture radius,seismic moment,seismic energy,stress drop,app... |
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| Keywords: | Focal dynamic parameters Temporal-spatial variation Wen′an earthquake Capital circleof China |
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