摘要
传统地壳形变刚性运动模型只顾及板块之间的刚性运动,未顾及板块内部形变的问题,均匀应变模型虽弥补了上述缺陷,但其假设条件为板块内部应变均匀,因此在地质构造复杂区域适用性较差。为此构建一种较为优化的地壳形变运动模型,将板块运动中偏离均匀应变和整体旋转的区域假设为干扰信号,板块运动中偏离整体均匀形变的部分可用最小二乘配置模型中的信号进行补偿;用四种模型对环渤海区域大陆监测网络得到的数据进行拟合分析,结果表明,利用最小二乘配置模型优化后的均匀应变模型,拟合精度更高。
The traditional crustal deformation rigid motion model only considers the rigid motion between plates,but not the internal deformation.Although the uniform strain model makes up for the above defects,the applicability is poor in complex geological structures due to its assumption that the internal strain of the plates is uniform.This paper optimizes the uniform strain model based on least squares configuration model.This idea assumes that the areas deviating from uniform strain and the overall rotation in plate motion as interference signals,and then compensates the signals with the least square configuration model.We compared the model with the other three models to fit the data obtained by the continental monitoring network around the Bohai region,the results show that the uniform strain model optimized by the least square configuration model has a higher fitting accuracy.
作者
张启斌
李同庆
高远斌
李晋东
王鸣鹤
陈晓阳
ZHANG Qibin;LI Tongqing;GAO Yuanbin;LI Jindong;WANG Minghe;CHEN Xiaoyang(College of Geomatics,Shandong University of Science and Technology,Qingdao Shandong 266590,China;China Railway Shanghai Bureau Group Company Limited.Ningbo Works Section,Ningbo Zhejiang 315000,China)
出处
《北京测绘》
2020年第6期788-792,共5页
Beijing Surveying and Mapping
关键词
地壳形变
均匀应变模型
最小二乘配置
干扰信号
欧拉矢量
crustal deformation
uniform strain
least squares collocation
interference signal
euler vector
作者简介
张启斌(1992-),男,宁夏固原人,硕士在读,研究方向变形监测理论与技术。E-mail:1036796893@qq.com
