摘要
本文介绍形变监测网有多期重复观测资料的一种分段线性动态平差方法。给出了分段线性形变模型的一般表达式,由此得到水准网、测边网计算位移的误差方程式以及水平形变网计算各种应变分量的误差方程表达式。与目前采用的各种动态平差方法比较,分段线性动态平差顾及了观测过程中地壳或点位运动对观测值的影响,可改善平差结果,更合理地估算观测精度,特别在求位移解时尤为明显。因而这种方法可更有效地应用于地震监测预报及形变监测研究。此外,也适用于计算其他各种动态过程,例如复测重力网的动态平差等。文中给出了一个应变算例。
In this paper,a method of kinematic adjustment of geodetic deformation network is introduced,a general expression for piese-wise linear deformation models is given, and observation equations with elevation, coordinate or strain component unknowns for leveling,trilateration,or both trilateration and triangulation are given for the calculation of the vertical and horizontal displacements and strain process. By comparing different methods of kinematic adjustments,it is Shown that the model can give a more accurate description of the deformation process with less model error.The method discussed in this paper can he used more effectively in detecting crustal deformation for earthquake predication and for other purposes,and also in other observation methods for earthquake prediction to delineate the variations in some physical qualities,for example,variations in gravity networks.
出处
《地壳形变与地震》
CSCD
1990年第2期26-34,共9页
Crustal Deformation and Earthquake
基金
地震科学联合基金
