总体最小二乘方法在华北地区应力分析和应变参数反演中的应用  

Applications of the Total Least Square Method in Stress Analysis and Strain Parameters Inversion in North China

作　　者：金童[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510530

出　　处：《东华理工大学学报（自然科学版）》2015年第1期96-101,共6页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金"中国大陆西部地区活动地块;断层运动的大地测量反演研究"(40574006)

摘　　要：近些年来,华北地区主要受近东西向的持续性挤压应力的作用,导致了东西向的压缩和南北向的挤出运动。从运动场的空间分布来看,其运动并非均匀,与以前的认知并非完全一致。通过基于总体最小二乘的反演方法,利用2002年相对稳定的GPS速度场数据,来分析华北地区板块运动应力场。将应变参数反演结果与基于最小二乘方法得到的结果进行对比分析,发现顾及了监测点误差的总体最小二乘方法更适合华北地区的应力分析和应变参数反演。In recent years, North China is mainly sustained by compressive stress from east to west, resulting in the east to west extrusion movement and the north to south compression. However, judging from the spatial distri- bution of movement field spatial, its motion is not uniform and is not entirely consistent with previous knowledge. Based on the total least squares strain parameter inversion method, relatively stable GPS velocity field data on 2002 was utilized to analyze plate movement stress field in North China. The strain parameter inversion results were compared with the results the least squares method obtained, found that total least squares method consider- ing monitoring point error is more suitable for stress analysis and strain parameters inversion in North China.

关 键 词：总体最小二乘 应变参数反演 应力分析 华北地区 

分 类 号：P315.727[天文地球—地震学]