关键词: 南极,地壳形变,监测,数据处理,应变分析

Abstract:

In order to research contemporary crustal movement of Antarctic,China has not only constructed the deformation monitoring network in West Antarctic Fildes Strait region,but also monitored the network by using DI 20 geodimeter and GPS instruments, and participated the Antarctic GPS Campaign Observation organized by SCAR as well. During mathematics processing of crustal horizontal deformation observations,a method to bring deformation parameters into the error equations of observations is discussed in this paper. Several classical deformation models,such as rigid body displacement and strain,are introduced. By analyzing the reference datum of static and dynamic geodetic network,the method is developed to set up different additional weight matrix for every different kind of parameter. A series of programs are developed to implementing the method mentioned above and the a“nalysis of West Antarctic Fildes deformation monitoring network.This paper also involves GPS data processing and analysis of deformation data using principle of monitoring network strain analysis in the paper. The research results indicate that it seems exacting displacement in Fildes rift region,but the displacement is not large,just a little rift shear movement.