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Mapping glacier velocities on Svalbard using ERS tandem DInSAR data

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The results presented show how glacier velocities can be measured and calculated from Earth Resources Satellite (ERS) tandem interferometric synthetic aperture radar (InSAR) data by the use of geographical information systems (GIS) and non-interferometric software. A semi-automatic algorithm using existing and newly implemented modules in ESRI's GIS software Arc has been developed to unwrap existing height differentiated interferometric SAR (DInSAR) data. The algorithm is applied to a data set covering glaciers from the arctic archipelago Svalbard. Estimated DInSAR velocities are decomposed into the glacier surface flow direction using a digital elevation model (DEM). Velocity fields for the glaciers Isachsenfonna, Akademikerbreen and Nordbreen on Svalbard are presented.

Keywords: Svalbard; glaciology; remote sensing; satellite SAR interferometry

Document Type: Research Article


Affiliations: 1: Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, NO-0316, Oslo, Norway 2: Norwegian Defence Research Establishment (FFI), P.O. Box 25, NO-2027, Kjeller, Norway

Publication date: December 1, 2005


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