气候变化领域集成服务门户(CCPortal): Seasonal deformation features on Qinghai-Tibet railway observed using time-series InSAR technique with high-resolution TerraSAR-X images

CCPortal

DOI	10.1080/2150704X.2016.1225170
	Seasonal deformation features on Qinghai-Tibet railway observed using time-series InSAR technique with high-resolution TerraSAR-X images
	Wang, Chao; Zhang, Zhengjia; Zhang, Hong; Wu, Qingbai; Zhang, Bo; Tang, Yixian
发表日期	2017
ISSN	2150-704X
EISSN	2150-7058
起始页码	1
结束页码	10
卷号	8 期号:1
英文摘要	Climate change and human activity are changing the dynamics of the Qinghai-Tibet Plateau (QTP) environmental balance, which impacts the safety and stability of its infrastructure. TheQinghai-Tibet Railway (QTR) is the longest structure in the QTP, and some sections of the QTR's embankment have been damaged due to freezing and thawing of permafrost. In this article, a modified SAR interferometry (InSAR) method for deformation monitoring is proposed and implemented. In this method, a seasonal deformation model based on the simplified Stefan equation has been adopted to measure the seasonal displacement. In particular, a linked coherence model is used to improve the effect of temporal correlation by defining a coherence parameter in the neighbouring pixel network. It was found that most of the study area had seasonal displacements of up to 20 mm. The deformation cross-section profile of the railway shows asymmetry between the two sides of the railway subgrade shoulders which may be related to sunny-shady slope effect. It was found that variable deformation along the QTR ranges from 0 to 30 mm, probably due to underlying permafrost conditions. Displacements of the experimental railway subgrade segment with varying types of coolingmeasurements are different, which shows their cooling efficiency variance.
语种	英语
WOS研究方向	Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Remote Sensing ; Imaging Science & Photographic Technology
WOS关键词	ACTIVE-LAYER THICKNESS ; PERMAFROST ENVIRONMENTS ; PERMANENT SCATTERERS ; SURFACE DEFORMATION ; THERMAL STATE ; PLATEAU ; INTERFEROMETRY ; RADARSAT-2 ; ISLAND ; AREA
WOS记录号	WOS:000386045800001
来源期刊	REMOTE SENSING LETTERS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240284
作者单位	[Wang, Chao; Zhang, Zhengjia; Zhang, Hong; Zhang, Bo; Tang, Yixian] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China; [Zhang, Zhengjia] Univ Chinese Acad Sci, Beijing, Peoples R China; [Wu, Qingbai] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chao,Zhang, Zhengjia,Zhang, Hong,et al. Seasonal deformation features on Qinghai-Tibet railway observed using time-series InSAR technique with high-resolution TerraSAR-X images[J]. 中国科学院西北生态环境资源研究院,2017,8(1).
APA	Wang, Chao,Zhang, Zhengjia,Zhang, Hong,Wu, Qingbai,Zhang, Bo,&Tang, Yixian.(2017).Seasonal deformation features on Qinghai-Tibet railway observed using time-series InSAR technique with high-resolution TerraSAR-X images.REMOTE SENSING LETTERS,8(1).
MLA	Wang, Chao,et al."Seasonal deformation features on Qinghai-Tibet railway observed using time-series InSAR technique with high-resolution TerraSAR-X images".REMOTE SENSING LETTERS 8.1(2017).