摘要
贵州是典型的喀斯特地貌,地质灾害问题比较突出。传统的监测手段无法做到长时间、大范围精细监测,合成孔径雷达干涉测量(InSAR)具有全天时、全天候,监测范围广、精度高的优势,广泛应用与地质灾害监测中。利用时序InSAR技术,使用Sentinel-1A数据监测了清镇市2018-2019年的地表沉降。结果显示,清镇市整体比较稳定,在部分地区存在明显的形变,主要集中在清镇市的西部和中部区域(犁倭镇、麦格苗族布依族乡),最大的形变量达到了-44mm·a^(-1),并结合高分辨率光学图像对可能的地质灾害隐患进行识别,分析了可能导致的形变因素。
Guizhou is a typical karst landform,and geological hazards are more prominent.Traditional monitoring methods cannot achieve long-term and large-scale fine monitoring.Synthetic Aperture Radar Interferometry(InSAR)has the advantages of all-weather and all-weather,wide monitoring range and high accuracy.It is widely used in geological disaster monitoring.In this paper,using time series InSAR,26 Sentinel-1A images were used to monitor the surface subsidence of Qingzhen city from 2018 to 2019.The experimental results show that Qingzhen city is relatively stable overall,and there are obvious deformations in some areas,mainly concentrated in the western and central regions of Qingzhen city(Liyao Town,Maigemiao Buyi Township),and the largest deformation variable reaches-44mm·a^(-1),and analyze the possible deformation factors.
作者
王硕
张正加
范鹏
王猛猛
WANG Shuo;ZHANG Zheng-jia;FAN Peng;WANG Meng-meng(Mapping Development Research Center,Ministry of Natural Resources of China,Beijing 100830,China;Artificial Intelligence School,Wuchang University of Technology,No.16Jiangxia Avenue,Wuhan Hubei 430223,China;Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan Hubei 430074,China)
出处
《现代测绘》
2021年第4期38-45,共8页
Modern Surveying and Mapping
基金
国家自然科学基金项目(41801348)
关键词
清镇
时序InSAR
形变
地质灾害
Qingzhen
time-series InSAR
deformation
geological disaster
