| 中强地震活动区地震年平均发生率确定方法的比较 |
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| 引用本文： | 彭艳菊,张力方,吕悦军,谢卓娟.中强地震活动区地震年平均发生率确定方法的比较[J].中国地震研究,2012,26(3):335-347. |
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| 作者姓名： | 彭艳菊 张力方 吕悦军 谢卓娟 |
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| 作者单位： | 中国地震局地壳应力研究所 北京市德外西三旗安宁庄路1号院 100085;中国地震局地壳应力研究所 北京市德外西三旗安宁庄路1号院 100085;中国地震局地壳应力研究所 北京市德外西三旗安宁庄路1号院 100085;中国地震局地壳应力研究所 北京市德外西三旗安宁庄路1号院 100085 |
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| 基金项目： | This project was sponsored by the National Key Technology R＆D Program，China (2006BAC13B01)． |
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| 摘 要： | Two kinds of methods for determining seismic parameters are presented,that is,the potential seismic source zoning method and grid-spatially smoothing method. The Gaussian smoothing method and the modified Gaussian smoothing method are described in detail, and a comprehensive analysis of the advantages and disadvantages of these methods is made. Then,we take central China as the study region,and use the Gaussian smoothing method and potential seismic source zoning method to build seismic models to calculate the mean annual seismic rate. Seismic hazard is calculated using the probabilistic seismic hazard analysis method to construct the ground motion acceleration zoning maps. The differences between the maps and these models are discussed and the causes are investigated. The results show that the spatial smoothing method is suitable for estimating the seismic hazard over the moderate and low seismicity regions or the hazard caused by background seismicity; while the potential seismic source zoning method is suitable for estimating the seismic hazard in well-defined seismotectonics. Combining the spatial smoothing method and the potential seismic source zoning method with an integrated account of the seismicity and known seismotectonics is a feasible approach to estimate the seismic hazard in moderate and low seismicity regions.
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| 关 键 词： | Moderate and low seismicity regions Annual seismic activity rate Grid-spatially smoothing method Potential seismic source zoning method |
Methods for Estimating Mean Annual Rate of Earthquakes in Moderate and Low Seismicity Regions |
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| Peng Yanju,Zhang Lifang,Lu Yuejun,and Xie Zhuojuan.Methods for Estimating Mean Annual Rate of Earthquakes in Moderate and Low Seismicity Regions[J].Earthquake Research in China,2012,26(3):335-347. |
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| Authors: | Peng Yanju Zhang Lifang Lu Yuejun and Xie Zhuojuan |
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| Institution: | Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China |
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| Abstract: | Two kinds of methods for determining seismic parameters are presented, that is, the potential seismic source zoning method and grid-spatially smoothing method. The Gaussian smoothing method and the modified Gaussian smoothing method are described in detail, and a comprehensive analysis of the advantages and disadvantages of these methods is made. Then, we take central China as the study region, and use the Gaussian smoothing method and potential seismic source zoning method to build seismic models to calculate the mean annual seismic rate. Seismic hazard is calculated using the probabilistic seismic hazard analysis method to construct the ground motion acceleration zoning maps. The differences between the maps and these models are discussed and the causes are investigated. The results show that the spatial smoothing method is suitable for estimating the seismic hazard over the moderate and low seismicity regions or the hazard caused by background seismicity; while the potential seismic source zoning method is suitable for estimating the seismic hazard in well-defined seismotectonics. Combining the spatial smoothing method and the potential seismic source zoning method with an integrated account of the seismicity and known seismotectonics is a feasible approach to estimate the seismic hazard in moderate and low seismicity regions. |
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| Keywords: | Moderate and low seismicity regions Annual seismic activity rate Grid-spatially smoothing method Potential seismic source zoning method |
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