【摘要】 地震灾情是应急救灾的首要信息,烈度分布是估计灾情的重要基础。为能更合理地进行烈度快速评估,本文提出了一种改进的椭圆烈度衰减模型,即建立椭圆长轴半径和短轴半径长度矩阵,并通过历史资料回归得出半径长度矩阵的初始值,而后根据现场调查数据,采用基于LMS算法的修正方法实时对半径长度矩阵进行修正,画出地震烈度等震线图,称之为地震烈度衰减的矩阵模型,并以1996年丽江7.0级地震为算例验证了本文模型的实用性。更多还原

【Abstract】 The earthquake damage emergency assessment work requires the isoseismal line to be constantly revised according to the updated information.So,this paper proposes an improved ellipse intensity-attenuation model,which is completed by the establishment of semi-major axis and semi-minor axis length matrix.Based on the initial value of the length matrix got by the regression of historical data and survey data from the site,we use the LMS algorithm to revise the length matrix and draw the isoseismal line,which is called the matrix intensity-attenuation model.In the end,the practicability of this model is verified by the case of Lijiang 7.0 earthquake.更多还原