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Ice sheet topography by satellite altimetryThe measured time between the transmission and rzturn of 13.9 GHz radar pulses from the GEOS 3 satellite (at a mean altitude of 844.5 km and an inclination of 114 deg 52 min) is used to determine the thickness of the Greenland ice cap, with an accuracy in surface elevation on the order of 2 m. Attention is given to changes in ice thickness as an indicator of climatic change in general, and change in mean sea level in particular. Each elevation data point obtained by the satellite represents an average along 0.67 km of ground track, and three-dimensional maps are presented to illustrate the data.
Document ID
19780063287
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Brooks, R. L.
(EG & G Washington Analytical Services Center Inc., Pocomoke City, Md., United States)
Campbell, W. J.
(U.S. Geological Survey Tacoma, Wash., United States)
Ramseier, R. O.
(Department of the Environment Ottawa, Canada)
Stanley, H. R.
(NASA Wallops Flight Center Wallops Island, Va., United States)
Zwally, H. J.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
August 10, 1978
Publication Information
Publication: Nature
Volume: 274
Subject Category
Earth Resources And Remote Sensing
Accession Number
78A47196
Distribution Limits
Public
Copyright
Other

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