| Effect of Aftershocks on Assessment of Seismic Hazard for Hebei Seismic Zone,China |
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| 作者姓名： | Liu Zhihui Fu Zhengxiang Jin Xueshen Shao Huicheng Zhu Ailan |
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| 作者单位： | [1]SeismologicalBureauofHebeiProvince,Shijiazhuang050021,China [2]CenterforAnalysisandPrediction,Beijing100036,China |
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| 基金项目： | thesub project(95 13 0 6 0 4 )oftheproject“MechanismandPredictionofContinentStrongEarthquake” (G19980 4 0 70 0 )andtheprojectofseismiccooperationfoundation“ResearchofNewMethodandApplicationofEstimationofCrustalDeformationbyUncompleteSeismicD |
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| 摘 要： | In this paper,the earthquake hazard parameters(λm,b and Mmax) from the maximum likelihood method for the raw catalogue and declustered catalogues have been used to discuss the effect of the aftershocks on the earthquake hazard estimation.The declusterd catalogues have been compoiled from the raw catalogues by deleting the aftershocks in different time interval after main shock according to the criteria for the aftershock activity period.As an example,Hebei seismic zone is taken to show the effect of the aftershock on the earthquake hazard assessment because three strong earthquakes with the aftershocks occurred from 1966,to 1976,The results have been shown that the effect of the aftershocks on the parameters λm,b is significant.The difference between the clustered and declustered catalogues has reached in seismic activity rate and recurrence period,at most,45% and 90%,respectively,But the diffeence in Mmax is smaller,Based on this,the suggestion that the aftershocks should be omitted in the estimation of the earthquake hazard could be made,but how long the aftershocks activity duration is still left to the future research.
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| 关 键 词： | 余震 地震灾害 评估 河北地震带 中国 活动性 地质构造 |
Effect of Aftershocks on Assessment of Seismic Hazard for Hebei Seismic Zone,China |
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| Liu Zhihui ,Fu Zhengxiang ,Jin Xueshen ,Shao Huicheng ,Zhu Ailan.Effect of Aftershocks on Assessment of Seismic Hazard for Hebei Seismic Zone,China[J].Earthquake Research in China,2002,16(2):160-166. |
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| Authors: | Liu Zhihui Fu Zhengxiang Jin Xueshen Shao Huicheng and Zhu Ailan |
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| Institution: | 1)Seismological Bureau of Hebei Province, Shijiazhuang 050021, China;2)Center for Analysis and Prediction,Beijing 100036, China;1)Seismological Bureau of Hebei Province, Shijiazhuang 050021, China;3)Seismological Bureau of Shanxi Province, Xi'an 710068, China;1)Seismological Bureau of Hebei Province, Shijiazhuang 050021, China |
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| Abstract: | |
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| Keywords: | Effect Aftershock Seismic hazard Assessment Hebei seismic zone |
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