| 河北唐山地区中小地震震源参数的测定 |
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| 引用本文： | 赵英萍,高景春,刁桂苓,赵明淳.河北唐山地区中小地震震源参数的测定[J].山西地震,2004(2):5-10. |
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| 作者姓名： | 赵英萍 高景春 刁桂苓 赵明淳 |
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| 作者单位： | 河北省地震局,河北,石家庄,050021 |
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| 基金项目： | 河北省青年基金课题，国家十五科技攻关计划(2001BA601B01-01-05) |
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| 摘 要： | 采用谱分析的方法，利用首都圈数字遥测地震台网的观测资料，计算了唐山地区2002年ML2．0以上的58个中小地震的波谱，进而估算了地震矩、拐角频率、应力降、震源破裂半径，并讨论了它们之间的相互关系以及拐角频率和应力降的时间分布特征。分析表明，地震矩与震级、拐角频率与震级的关系密切，证实结果可信、稳定。
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| 关 键 词： | 河北 唐山地区 中小地震 震源参数 波谱分析 应力降 地震矩 |
| 文章编号： | 1000-6265(2004)02-05-06 |
The Determine of the Paramters of the Moderate Earthquakes in Tangshan Region,Hebei Province |
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| ZHAO Ying-ping,GAO Jing-chun,Diao Gui-ling,Zhao Ming-chun.The Determine of the Paramters of the Moderate Earthquakes in Tangshan Region,Hebei Province[J].Earthquake Research in Shanxi,2004(2):5-10. |
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| Authors: | ZHAO Ying-ping GAO Jing-chun Diao Gui-ling Zhao Ming-chun |
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| Abstract: | Using the observational datum of the Capital region digital seismological network, the seismic waveform spectra are obtained with the data records of 58 bigger than 2.0 magnitude earthquakes which occurred in Tangshan region in 2002, meanwhile, the seismic moment, corner frequency, stress drop, focal size of each earthquake are calculated. The relations between the source parameters are discussed, and the characters of the corner frequency and stress drop distribution with time are analysed. The results show the relationship between the moment and the magnitude, and that of the corner frequency and the magnitude are consanguineous. This approve that the results are credible. |
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| Keywords: | Spectral analysis Source parameter Stress drop Seismic moment |
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