最小二乘配置法优化的REHSM模型及应用  

The REHSM Model Improved by Least Square Collocation Method and Its Application

作　　者：王东东 张俊[1] 邓小东[1] 刘继庚 赵旭坤[1] WANG Dongdong;ZHANG Jun;DENG Xiaodong;LIU Jigeng;ZHAO Xukun(Mining College, Guizhou University, Guiyang 550025, Chin)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025

出　　处：《测绘通报》2018年第4期96-99,130,共5页Bulletin of Surveying and Mapping

基　　金：贵州省科学技术基础研究计划(黔科[2017]1054);贵州大学引进人才科研项目(贵大人基合字(2016)51号);贵州大学测绘科学与技术研究生创新实践基地建设项目(贵大研CXJD[2014]002);贵州大学教育教学改革研究项目(JG201630)

摘　　要：REHSM模型由于顾及了板内形变,实际上是一种对传统刚体板块运动模型的优化模型,但鉴于其假设条件为板内应变均匀,导致其可能难以适用于复杂地质构造区域。本文提出了将板内偏离整体旋转和均匀应变的块体形变部分看作是干扰信号,利用信号对块体内部偏离整体旋转与均匀应变的形变部分进行补偿,建立了一种优化的弹性运动及形变分析模型;对最近几期中国大陆构造环境监测网络在环渤海区域的速度场数据进行拟合分析,结果表明,新方法能有效地精化REHSM模型,具有更高的拟合精度。It is known that the traditional rigid plate rotation motion model（ RRM） can not take into account the deformation of the intraplate,which is up to now seems to have been solved by the overall rotation with homogeneous strain model（ REHSM）. However,there is still limitation in describing the deformation of the intraplate because of that the ＂homogeneous＂assumption is difficult to be satisfied in many complex geological tectonic regions. Therefore,a new model of REHSM improved by least square collocation is presented to enable the model of REHSM to have a wide applicability.The results of the analysis of the velocity field data of the recent GPS observations from ＂China Tectonic Environment Monitoring Network＂in the Bohai sea area show that it is feasible and more reasonable to use the new model to analyze the crustal deformation.

关 键 词：地壳运动 均匀应变 线性应变 最小二乘配置 

分 类 号：P227[天文地球—大地测量学与测量工程]