气候变化领域集成服务门户(CCPortal): Preliminary Study on InSAR-Based Uplift or Subsidence Monitoring and Stability Evaluation of Ground Surface in the Permafrost Zone of the Qinghai-Tibet Engineering Corridor, China

CCPortal

DOI	10.3390/rs15153728
	Preliminary Study on InSAR-Based Uplift or Subsidence Monitoring and Stability Evaluation of Ground Surface in the Permafrost Zone of the Qinghai-Tibet Engineering Corridor, China
	Du, Qingsong; Chen, Dun; Li, Guoyu; Cao, Yapeng; Zhou, Yu; Chai, Mingtang; Wang, Fei; Qi, Shunshun; Wu, Gang; Gao, Kai; Li, Chunqing
发表日期	2023
EISSN	2072-4292
卷号	15 期号:15
英文摘要	Against the background of global warming, permafrost areas are facing increasing thawing, and the threat to the surface of the Qinghai-Tibet Engineering Corridor (QTEC) is serious. It is imperative to understand the current surface deformation and analyze the changes spatiotemporal characteristics for future warnings. At present, observation of a long time series and overall coverage of vertical ground deformation in QTEC are lacking. This paper takes the permafrost deformation of the QTEC as its research object. It uses the pretreated LiCSAR product and combines it with the LiCSBAS package to obtain monitoring results of the long time series deformation of the engineering corridor's surface. The SAR image acquisition date is taken as the constraint, the results covering the whole processing area are selected, and then the vertical deformation information covering the entire engineering corridor area by ignoring the north-south displacement is calculated. The results show that the surface of the study area, as a whole, slightly subsided between May 2017 and March 2022, and the vertical deformation rate was mostly distributed at -27.068 mm/yr - 18.586 mm/yr, with an average of -1.06 mm/yr. Vertical deformation dominated at 52.84 percent of the study area, of which settlement accounted for 27.57 percent and uplift accounted for 25.27 percent. According to the statistics of the normal distribution of deformation velocity per pixel, a total of 77% of the engineering corridor was stable, with a vertical deformation rate between -6.964 mm/yr and -4.844 mm/yr, and 17.7% of the region was sub-stable, with a settling rate of -12.868 mm/yr - -6.964 mm/yr. The unstable regions included areas with settlement rates greater than 12.868 mm/yr and uplift rates greater than 10.748 mm/yr, representing 4.4 percent and 0.9 percent of the total area, respectively, for a total of 5.3 percent. The results of this paper can be used as the theoretical basis and as basic data for decision making and scientific research in various departments, and they are of great significance for surface stability assessment and early warnings along engineering corridors and traffic projects.
关键词	InSAR Qinghai-Tibet engineering corridor permafrost zone big data and cloud computing disaster prevention and mitigation
英文关键词	CLIMATE-CHANGE; DEFORMATION; LANDSLIDE; REGION; MODEL; BASIN; NDVI
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001045528300001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283038
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Fujian University of Technology; Ningxia University; Jiangsu University
推荐引用方式 GB/T 7714	Du, Qingsong,Chen, Dun,Li, Guoyu,et al. Preliminary Study on InSAR-Based Uplift or Subsidence Monitoring and Stability Evaluation of Ground Surface in the Permafrost Zone of the Qinghai-Tibet Engineering Corridor, China[J],2023,15(15).
APA	Du, Qingsong.,Chen, Dun.,Li, Guoyu.,Cao, Yapeng.,Zhou, Yu.,...&Li, Chunqing.(2023).Preliminary Study on InSAR-Based Uplift or Subsidence Monitoring and Stability Evaluation of Ground Surface in the Permafrost Zone of the Qinghai-Tibet Engineering Corridor, China.REMOTE SENSING,15(15).
MLA	Du, Qingsong,et al."Preliminary Study on InSAR-Based Uplift or Subsidence Monitoring and Stability Evaluation of Ground Surface in the Permafrost Zone of the Qinghai-Tibet Engineering Corridor, China".REMOTE SENSING 15.15(2023).