张朋吉

• 1:甘肃省测绘工程院
• 2:甘肃省应急测绘研究中心

摘要(Abstract)：

针对甘肃省内板块运动活跃,基于高精度GNSS数据分析地表三维形变的资料相对较少的问题,该文利用GAMIT/GLOBK10.7软件对114个GSCORS近4.5年的连续观测数据进行处理,获取了甘肃CORS在ITRF2014框架下的三维速度场,分析了甘肃省内地表运动规律。结果表明:甘肃CORS水平方向自西向东整体运动趋势表现为由北偏东渐变为东偏南,具体表现为河西地区平均运动速率为31.3 mm/a、优势方向为北偏东84.4°,河东地区平均运动速率为36.4 mm/a、优势方向为东偏南9.7°;垂直方向整体上呈"东升西降"趋势,沉降区域主要分布在河西走廊,沉降速率在东西0.5～4 mm/a;隆升区域分布在兰州以东,隆升速率在1～5 mm/a;在无净旋转基准下存在明显的块体相对运动,东西方向呈拉张运动,站点相对速率达5 mm/a,南北方向为挤压运动,站点相对速率为2.3 mm/a。

关键词(KeyWords)： 基准站;三维速度场;地表运动;地表沉降与隆升;拉张与挤压

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张朋吉

DOI: 10.16251/j.cnki.1009-2307.2020.09.002

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