摘要
合成孔径雷达差分干涉测量技术可获取研究区域雷达视线方向(Line of Sight,LOS)的形变.根据升降轨几何关系,联合升、降轨道的雷达视线方向(LOS)观测值对2021年5月21日云南漾濞地震形变场进行地表形变提取并进行地表二维形变分析,研究雷达视线方向(LOS)形变与垂直方向形变和水平东西方向形变的关系.结果显示,此次地震在垂直方向上的形变平均值为-0.74 cm,在水平方向上的形变平均值为-1.27 cm,表明此次地震在垂直方向上的影响比在东西水平方向上的影响小.
Synthetic aperture radar(SAR) differential interferometry is used to obtain the deformation of the line of sight(LOS) in the study area.The surface deformation of the Yangbi earthquake on 21 th May 2021 was extracted based on the geometry of the lifting and lowering tracks,and the surface 2 D deformation analysis was performed to investigate the relationship between the LOS deformation and the vertical deformation and horizontal east-west deformation.The results show that the mean value of deformation in the vertical direction is-0.74 cm and in the horizontal direction is-1.27 cm,indicating that the impact of the earthquake in the vertical direction is less than in the east-west horizontal direction.
作者
高宏伟
史先琳
陈晨
尹勇
戴可人
GAO Hongwei;SHI Xianlin;CHEN Chen;YIN Yong;DAI Keren(College of Geosciences,Chengdu University of Technology,Chengdu 610059,China;State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection,Chengdu University of Technology,Chengdu,China)
出处
《昆明理工大学学报（自然科学版）》
北大核心
2022年第2期57-64,共8页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(41801391)。
关键词
差分干涉测量
地表形变
漾濞地震
干涉测量技术
differential interferometry
surface deformation
Yangbi earthquake
interferometry technology
