NDLI: Monitoring glacier surface velocity in West Kunlun Mountain using offset tracking methods based on ALOS/PALSAR images

Content Provider	IEEE Xplore Digital Library
Author	Zhixing Ruan Huadong Guo Guang Liu Shiyong Yan
Copyright Year	2012
Description	Author affiliation: Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China (Zhixing Ruan; Huadong Guo; Guang Liu; Shiyong Yan)
Abstract	The motion of mountain glaciers on the Tibetan Plateau is one of the key parameters in the research of environmental changes, especially the surface velocity variation over a period of years. Due to the abominable geographical conditions of steep terrain and freezing temperature, it is hard to acquire enough information using traditional ground survey. Optical remote sensing images could be useless during some special period with too much cloud cover. The main objective of this paper is to evaluate the performance of the alternative method-tracking offsets from SAR images, and is trying to add to the lacking information of glacier monitoring in west Kunlun Mountain. Three complete and detailed maps of glacier flow velocity fields during 2007–2010 are obtained by procedures of offset detection using cross correlation in Fourier domain. We found that winter glacier motions on the north slope are averagely 1 cm/day faster than south slope, well corresponding to the local topography. Accuracy of the results could be evaluated based on the offsets extracted from the regions obviously stationary, like the flat ground or the bed rock. The potential deviation is on the order of 0.12–0.25 pixels, which is acceptable in such large scale.
Starting Page	4438
Ending Page	4441
File Size	922000
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6350487
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Remote sensing Synthetic aperture radar Surface topography Azimuth Radar tracking Geologic measurements Imaging remote sensing Mountain glaciers west Kunlun Mountain offset tracking
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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