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Ice sheet topography from retracked ERS-1 altimetryAn objective of the ERS-1 radar altimeter is to measure the surface topography of the polar ice sheets to a precision on the order of a meter. ERS-1 Waveform Altimeter Product (WAP) data was corrected for several processing errors. A range correction from the WAP waveforms, using the multiparameter retracking algorithm to account for range tracking limitations inherent to radar altimetry, was derived. From crossover analysis, the resulting precision is shown to be about 2.1 m in ocean mode and 2.2 m in ice mode. A topography map, produced with 23 days of corrected data, shows details of the western part of west Antarctic ice sheet and part of the Ross ice shelf including ice divides, ice stream boundaries, and ice shelf grounding lines.
Document ID
19940029987
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zwally, H. Jay
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brenner, Anita C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dimarzio, John
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Seiss, Timothy
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: ESA, Proceedings of the Second ERS-1 Symposium on Space at the Service of Our Environment, Volume 1
Subject Category
Earth Resources And Remote Sensing
Accession Number
94N34493
Funding Number(s)
PROJECT: RTOP 578-32-19
PROJECT: RTOP 428-82-20
PROJECT: RTOP 578-97-20
Distribution Limits
Public
Copyright
Other
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