摘要
介绍了块体系统非连续变形分析数值方法的基本理论及特点，讨论了DDA解算大地测量资料应解决的问题根据地质构造背景建立大华北块体网络系统，利用华北GPS网3期观测资料进行地壳应力场反演，结果与原地应力测量资料和传统网平差最小二乘配置法吻合，表明DDA具备实际应用前景。最后对研究方向做了探讨。
The fundamental theory and its features of Discontinuous Deformation Analysis (DDA)are introduced. The problems existing in DDA's application in solving geodetic data are discussed. Then,based on tectonic background of the Northern China,the block system is set up. The result of crustal stress inversion by using 1992, 1995, 1996 observation data of GPS in the Northern China is similar to stress measurement data and the least square collocation calculations. It infers that DDA has something of valuable future. Finally,the study regions are discussed.
出处
《高原地震》
1999年第1期1-5,共5页
Plateau Earthquake Research
基金
国家95攻关课题!95-04-04-01-01
关键词
不连续变形分析
应力场反演
地壳应力
Discontinuous deformation anaysis
Stress field inversion
Crustal stress
