PS-InSAR based surface subsidence analysis in Changchun metropolitan area
The monitoring of urban land surface subsidence is the main task of urban disaster prevention and mitigation. In this paper, the land surface subsidence process in Changchun metropolitan area is calculated based on PS-InSAR technology by using the SLC data of Sentinel-1B with 50 scenes within the me...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2021-01-01
|
Series: | E3S Web of Conferences |
Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/66/e3sconf_icgec2021_02006.pdf |
id |
doaj-f2a53cd7a3d442a0b2772fd2c8a42340 |
---|---|
record_format |
Article |
spelling |
doaj-f2a53cd7a3d442a0b2772fd2c8a423402021-07-15T06:53:50ZengEDP SciencesE3S Web of Conferences2267-12422021-01-012900200610.1051/e3sconf/202129002006e3sconf_icgec2021_02006PS-InSAR based surface subsidence analysis in Changchun metropolitan areaWang He0Mao Jiuchang1Zhao Shijun2Ning Xinguo3Wu Qiong4College of Geo-exploration Science and Technology, Jilin UniversityChina Water Northeastern Investigation Design & Research Co. Ltd ChangchunChina Water Northeastern Investigation Design & Research Co. Ltd ChangchunChangchun Institute of Surveying and MappingCollege of Geo-exploration Science and Technology, Jilin UniversityThe monitoring of urban land surface subsidence is the main task of urban disaster prevention and mitigation. In this paper, the land surface subsidence process in Changchun metropolitan area is calculated based on PS-InSAR technology by using the SLC data of Sentinel-1B with 50 scenes within the metropolitan area of Changchun from 2016 to 2020. The results show that the metropolitan surface of Changchun is basically in a stable state, the main settlement is located in the southeast of the metropolitan around the Century Square, the maximum settlement rate is 20.45mm/a, the average settlement rate is 2.98mm/a, the correlation coefficient between the settlement results calculated by PS-InSAR and the second-class leveling verification results reaches 0.67, which indicates that the regional settlement results calculated by PS-InSAR have high reliability. The subsidence area is dominated by the geological structure of the Mesozoic Cretaceous Yaojia Formation, with many intercalations of fine silty sand rocks and locally containing medium-coarse gravel sandstone. The overall structural stability is poor, which may be the main reason for subsidence in this area.https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/66/e3sconf_icgec2021_02006.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wang He Mao Jiuchang Zhao Shijun Ning Xinguo Wu Qiong |
spellingShingle |
Wang He Mao Jiuchang Zhao Shijun Ning Xinguo Wu Qiong PS-InSAR based surface subsidence analysis in Changchun metropolitan area E3S Web of Conferences |
author_facet |
Wang He Mao Jiuchang Zhao Shijun Ning Xinguo Wu Qiong |
author_sort |
Wang He |
title |
PS-InSAR based surface subsidence analysis in Changchun metropolitan area |
title_short |
PS-InSAR based surface subsidence analysis in Changchun metropolitan area |
title_full |
PS-InSAR based surface subsidence analysis in Changchun metropolitan area |
title_fullStr |
PS-InSAR based surface subsidence analysis in Changchun metropolitan area |
title_full_unstemmed |
PS-InSAR based surface subsidence analysis in Changchun metropolitan area |
title_sort |
ps-insar based surface subsidence analysis in changchun metropolitan area |
publisher |
EDP Sciences |
series |
E3S Web of Conferences |
issn |
2267-1242 |
publishDate |
2021-01-01 |
description |
The monitoring of urban land surface subsidence is the main task of urban disaster prevention and mitigation. In this paper, the land surface subsidence process in Changchun metropolitan area is calculated based on PS-InSAR technology by using the SLC data of Sentinel-1B with 50 scenes within the metropolitan area of Changchun from 2016 to 2020. The results show that the metropolitan surface of Changchun is basically in a stable state, the main settlement is located in the southeast of the metropolitan around the Century Square, the maximum settlement rate is 20.45mm/a, the average settlement rate is 2.98mm/a, the correlation coefficient between the settlement results calculated by PS-InSAR and the second-class leveling verification results reaches 0.67, which indicates that the regional settlement results calculated by PS-InSAR have high reliability. The subsidence area is dominated by the geological structure of the Mesozoic Cretaceous Yaojia Formation, with many intercalations of fine silty sand rocks and locally containing medium-coarse gravel sandstone. The overall structural stability is poor, which may be the main reason for subsidence in this area. |
url |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/66/e3sconf_icgec2021_02006.pdf |
work_keys_str_mv |
AT wanghe psinsarbasedsurfacesubsidenceanalysisinchangchunmetropolitanarea AT maojiuchang psinsarbasedsurfacesubsidenceanalysisinchangchunmetropolitanarea AT zhaoshijun psinsarbasedsurfacesubsidenceanalysisinchangchunmetropolitanarea AT ningxinguo psinsarbasedsurfacesubsidenceanalysisinchangchunmetropolitanarea AT wuqiong psinsarbasedsurfacesubsidenceanalysisinchangchunmetropolitanarea |
_version_ |
1721301713796726784 |