关于“一致”地震动衰减规律的探讨  

Discussion on the Consistent Attenuation Law of Earthquake Intensity

作　　者：万召侗[1] 罗奇峰[1] 曾心传[2] 龚平[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]中国地震局地震研究所,武汉430071

出　　处：《地震研究》2005年第4期373-377,共5页Journal of Seismological Research

基　　金：国家自然科学基金(50378071);湖北省科学技术委员会发展基金项目(JJ9200041)联合资助

摘　　要：以我国中南地区烈度资料为例,用卡方正交回归烈度和震级的联合椭圆衰减模型,研究了烈度和震级相互转换的一致性问题,给出适合该地区的“一致”地震动衰减关系,并与常规方法得到的最小二乘结果进行比较,结果较为合理。该方法也可用于预测不同地区其它地震动参数衰减关系。Taking the intensity data in the south of Central China as an example, we use Chi-square orthogonal regression of symmetric intensity model of joint ellipse in the south of Central China to eradicate the inconsistency in the transformation between intensity and magnitude,＇ and obtained the consistent earthquake motion attenuation law agreeing with the area. Compared with ordinary least-square estimation, the presented Chi-square solution serves a better improvement of asymptotic magnitude-intensity transformation. This way is also suitable for the regression of other earthquake motion parameters in other regions.

关 键 词：一致性 衰减 烈度 地震动 卡方正交回归 中南地区 

分 类 号：P315.9[天文地球—地震学]