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	Seasonal deformation features on qinghai-tibet railway observed using time-series insar technique with high-resolution terrasar-x images
	Wang, Chao1; Zhang, Zhengjia1,2; Zhang, Hong1; Wu, Qingbai3; Zhang, Bo1; Tang, Yixian1
刊名	Remote sensing letters
	2017
卷号	8期号:1页码:1-10
ISSN号	2150-704X
DOI	10.1080/2150704x.2016.1225170
通讯作者	Zhang, hong(zhanghong@radi.ac.cn)
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.
WOS关键词	ACTIVE-LAYER THICKNESS ; PERMANENT SCATTERERS ; PERMAFROST ENVIRONMENTS ; SURFACE DEFORMATION ; SAR INTERFEROMETRY ; THERMAL STATE ; PLATEAU ; CHINA ; RADARSAT-2 ; CANADA
WOS研究方向	Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000386045800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374987
专题	中国科学院大学
通讯作者	Zhang, Hong
作者单位	1.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.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]. Remote sensing letters,2017,8(1):1-10.
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),1-10.
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):1-10.

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