Changes in the West Antarctic Ice Sheet Since 1963 from Declassified Satellite Photography-Reference-Cited by-同舟云学术

Changes in the West Antarctic Ice Sheet Since 1963 from Declassified Satellite Photography

Published:1998-01-30 Issue:5351 Volume:279 Page:689-692
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Bindschadler Robert¹²,Vornberger Patricia¹²

Affiliation:

1. R. Bindschadler, Code 971, NASA–Goddard Space Flight Center, Greenbelt, MD 20771, USA.

2. P. Vornberger, General Sciences Corporation, 6100 Chevy Chase Drive, Laurel, MD 20727, USA.

Abstract

Comparison of declassified satellite photography taken in 1963 with more recent satellite imagery reveals that large changes have occurred in the region where an active ice stream enters the Ross Ice Shelf. Ice stream B has widened by 4 kilometers, at a rate much faster than suggested by models, and has decreased in speed by 50 percent. The ice ridge between ice streams B and C has eroded 14 kilometers. These changes, along with changes in the crevassing around Crary Ice Rise, imply that this region's velocity field shifted during this century.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference21 articles.

1. Climate Change 1995 The Science of Climate Change J. T. Houghton et al. Eds. (Cambridge Univ. Press Cambridge UK 1996).

2. M. Stuiver G. H. Denton T. J. Hughes J. L. Fastook in The Last Great Ice Sheets G. H. Denton and T. J. Hughes Eds. (Wiley-Interscience New York 1981) pp. 319-428

3. B. Hall thesis University of Maine (1997).

4. Changes in the West Antarctic Ice Sheet

5. Crary Ice Rise is not a true ice rise because it is encompassed by grounded ice. However the discovery of lightly grounded ice surrounding the ice rise was made after the feature was named.

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