NDLI: SAR interferometry and offset tracking approaches for glacier movement estimation in the Himalaya

Content Provider	IEEE Xplore Digital Library
Author	Kumar, V. Venkataraman, G. Larsen, Y. Hogda, K.A.
Copyright Year	2011
Description	Author affiliation: Northern Research Institute (NORUT), Tromsø, Norway (Larsen, Y.; Hogda, K.A.) \|\| Indian Institute of Technology, Bombay, Powai, Centre of Studies in Resources Engineering, Mumbai 400076, India (Kumar, V.; Venkataraman, G.)
Abstract	We have used the repeat pass Synthetic Aperture Radar (SAR) intensity tracking for two dimensional (2-D) glacier surface motion estimation using X-band data. It has been observed that the viability of SAR interferometry (InSAR) often is limited by coherence loss over glaciers in land locked regions using SAR data pairs of more than one-day temporal baseline. An alternative to InSAR is the intensity tracking approach, which relies on intensity cross-correlation for estimation of subpixel surface motion in range and azimuth directions. In this work we have applied this approach for two-dimensional glacier surface motion estimation in northwestern (NW) Himalayas, using TerraSAR-X (TS-X) spotlight mode high-resolution data pairs of 11 day, 22 day and 33 day temporal separation of August- September, 2008. Gangotri glacier motion in NW Himalayas are studied and analyzed over short period and it has been observed that its motion was 10 cm/day. The technique is found to be highly appropriate for monitoring the flow rate of glaciers in Himalayas and can be used to routine monitoring of glacier characteristics and dynamics.
Starting Page	3175
Ending Page	3178
File Size	457199
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049893
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tracking Estimation Radar tracking Correlation Azimuth Coherence Interferometry Intensity tracking Himalaya glacier flow SAR
Content Type	Text
Resource Type	Article

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