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Observations of ice‐sheet motion in Greenland using satellite radar interferometry
Author(s) -
Joughin Ian R.,
Winebrenner Dale P.,
Fahnestock Mark A.
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl00264
Subject(s) - geology , ice sheet , interferometry , synthetic aperture radar , remote sensing , geodesy , glaciology , satellite , radar , interferometric synthetic aperture radar , greenland ice sheet , geomorphology , seismology , optics , tectonics , stratigraphy , computer science , telecommunications , physics , engineering , aerospace engineering
We present interferometric observations of ice‐sheet motion in western Greenland based on pairs of ERS‐1 synthetic aperture radar (SAR) images. These observations provide the first detailed regional view of ice motion associated with dynamically supported topography near the margin of an ice sheet. The interferograms of this area are much more complicated than other interferograms of ice sheets presented to date. We devote the largest part of this paper to explaining the source of the complexity in these interferograms. A synthetic interferogram based on a simple model helps to illustrate the effects of different components of the ice velocity field in interferometric data and suggests a method for estimating the large‐scale ice velocity field from such data.