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Mapping of Glacial Motion and Surface Topography of Hielo Patagonico Norte, Chile, Using Satellite SAR L-band Interferometry DataThe first topographic and ice-motion maps of the northwestern flank of Hielo Patagonico Norte (HPN, northern Patagonia Icefield), in Chile, were produced using satellite synthetic-aperture interferometric radar data acquired by NASA's Spaceborne Imaging Radar C instrument in October 1994. The topographic map has a IO m vertical precision with a 30 m horizontal spacing, which should be sufficient to serve as a reference for monitoring future mass changes of the icefield. The ice-motion map is accurate to within 4 mm/ d (or 1/ ma). The radar-derived surface topography and ice velocity are used to estimate the ice discharge from the accumulation area of four outlet glaciers, and the calving flux and mass balance of Glaciar San Rafael. The results demonstrate the use of SAR interferometry for monitoring glaciological parameters on a spatial and temporal scale unattainable by any other means.
Document ID
19990008459
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Rignot, Eric
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Forster, Rick
(Cornell Univ. Ithaca, NY United States)
Isacks, Bryan
(Cornell Univ. Ithaca, NY United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1996
Publication Information
Publication: Annals of Glaciology
Publisher: International Glaciological Society
Volume: 23
Subject Category
Earth Resources And Remote Sensing
Distribution Limits
Public
Copyright
Other

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