摘要
针对最小二乘配置中协方差函数的确定问题,顾及地壳运动的物理特征和空间属性,提出了引入地球物理模型计算值做中心化,同时分区、按方向确定协方差函数的新方法。利用实测数据,结合抗差估计,建立了更具代表性的中国大陆主要块体水平运动的协方差函数模型。采用该模型,计算结果具有更合理的解释性。
For determining the covariance function in the collocation model for analyzing crustal deformation a new method considering the physical characters and spacial attribute of crustal movement is proposed, into which the calculated deformation value is introduced and centralized and the determination is made in different regions and different directions. Using the observed data and combining the robase estimation we have established the more representative covariance function model of the horizontal movement of the main blocks of China continent. By use of this model the calculated results can be interpreted more reasonably.
出处
《大地测量与地球动力学》
CSCD
北大核心
2009年第4期74-78,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40674014)
关键词
地壳运动
协方差函数
最小二乘配置
地球物理模型
抗差估计
crustal movement
covariance function
least squares collocation
geophysical model
robust estimate
