基于CORS数据建立河南区域速度场模型  

Establishing a regional velocity field model in Henan Province based on CORS data

作　　者：邓学锋 Deng Xuefeng(Henan Provincial Institute of Surveying and Mapping,Zhengzhou 450003,China)

机构地区：[1]河南省测绘院,郑州450003

出　　处：《工程勘察》2025年第4期61-65,共5页Geotechnical Investigation & Surveying

基　　金：河南省自然资源科研资助项目(2022-13)。

摘　　要：河南地区处于华北地块中央,构造复杂多样。建立河南区域速度场模型对于深入认识华北地块构造演化,掌握区域地壳活动演化规律具有重要意义。本文借助2018~2020年40个河南省全球导航卫星连续运行参考站(CORS)观测数据建立河南区域速度场模型,同时使用未参与建模的CORS站观测数据对建立的模型进行精度分析。结果表明,2018~2020年CORS站基线解算结果NRMS值最大为0.2100mm,网平差结果显示CORS站重复性RMS最大值为3.68mm;建立的速度场模型显示,河南区域相对欧亚板块整体表现出向东南方向运动的趋势,水平方向平均运动速度分别为E方向6.05mm/a、N方向-3.24mm/a;通过精度评估可知,建立的速度场河南区域速度场模型在水平方向精度优于1.55mm/a。Henan is located in the center of the north China block,with complex and diverse structures.Establishing a regional velocity field model in Henan is of great significance for deeply understanding the tectonic evolution of the north China block and mastering the evolution laws of regional crustal activity.This article uses the observation data of 40 continuously operating reference stations(CORS)in Henna from 2018 to 2020 to establish a regional velocity field model,At the same time,accuracy analysis was conducted on the established model using observation data from CORS stations that were not involved in the modeling.The results showed that the maximum NRMS value of CORS stations was 0.2100mm,and the network adjustment results showed that the maximum repetitive RMS value of CORS stations was 3.68mm;The established velocity field model shows that the Henan region moves in a southeast trend relative to the Eurasian plate as a whole,with average horizontal motion velocities of 6.05mm/a in the E direction and-3.24mm/a in the N direction,respectively.The accuracy evaluation shows that the established velocity field model has a horizontal accuracy of better than 1.55mm/a.

关 键 词：连续运行参考站综合服务系统 速度场 欧拉矢量 网平差 

分 类 号：P228[天文地球—大地测量学与测量工程]