| Abstract: | In order to study 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 in detail. By analyzing the reference datum of statistical geodetic network, a conclusion is drawn that it is unfit to use rank-defected reference datum for the crustal deformation analysis, and another method is developed to set up different additional weight matrix for every different kind of parameter, the classical adjustment and rank-defected adjustment are well unified. Two methods of considering or non-considering the relation between point parameters and deformation parameters are compared, and the former is more appropriate than the latter. A series of programs are developed to implementing the method mentioned above and the analysis of West Antarctic Fileds deformation monitoring network. It is also involved GPS data processing and analysis of deformation results 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. |
