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中国西部地区大地震(MS≥7)烈度衰减关系改进

DOI: 10.13577/j.jnd.2015.0114, PP. 104-113

Keywords: 大地震,地震烈度,衰减关系,中国西部

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Abstract:

考虑近年大地震(MS≥7.0)震后快速灾害评估的需要,利用中国西部地区1900年以来MS≥7.0级地震的资料,采用最小二乘法拟合与分段函数对烈度限定相结合的方法,对西部地区的地震烈度衰减关系进行了改进,并就所得结果的合理性进行了分析;根据大震长轴半径的特点,初步研究了大震极震区长轴半径对烈度衰减规律的影响。

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