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Measured properties of the Antarctic ice sheet derived from the SCAR Antarctic digital database

Published online by Cambridge University Press:  27 October 2009

Adrian J. Fox
Affiliation:
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET
A. Paul
Affiliation:
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET
R. Cooper
Affiliation:
British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 OET

Abstract

The completion of the SCAR Antarctic digital database (ADD) has provided a new basis for statistical calculations for Antarctica: data-sets are available at the scale of the original source material, and generalised to 1:1,000,000, 1:3,000,000, 1:10,000,000, and 1:30,000,000. The new descriptive statistics presented are based on the ADD 1:1,000,000 data-set since this is the largest scale at which source maps provided complete cover of the coastline and ice-free areas. The statistics include the total length and proportions of coastline types and the total area of Antarctica with the proportions of its constituent feature types. The areas of the Ross and Filchner-Ronne ice shelves have also been computed. Whilst the total area of Antarctica has remained static compared with previous studies, the relative proportions of coastline types and constituent feature types within the total area show significant changes. In particular the calculated area of ice-free ground is only approximately one-seventh of that often quoted from previous studies. The changes reported result from improved mapping, reinterpretation of data, and actual changes of coastline.

Type
Articles
Copyright
Copyright © Cambridge University Press 1994

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References

Aver'yanov, V.G. 1980. Morfometricheskiye kharakteris tiki lednikovogo pokrova Antarktidy [Morphometric characteristics of the Antarctic ice sheet]. Sovetskaya Antarkticheskaya Ekspeditsiya. Informatsionnyy Byulleten' 100: 59.Google Scholar
Bardin, V.I., and Suyetova, Y.A.. 1967. Basic morphometric characteristics for Antarctica and budget of the Antarctic ice cover. Scientific Reports of the Japanese Antarctic Research Expedition Special issue 1: 92100.Google Scholar
Cooper, A.P.R., Drewry, D., and Jordan, S. R.. 1983. Geophysical database and Antarctic coastline compilation. In: Drewry, D.J. (editor). Antarctica: glaciological and geophysical folio. Cambridge: Scott Polar Research Institute.Google Scholar
Drewry, D.J. (editor). 1983. Antarctica: glaciological and geophysical folio. Cambridge: Scott Polar Research Institute.Google Scholar
Drewry, D.J., Jordan, S.R., and Jankowski, E.. 1982. Measured properties of the Antarctic ice sheet: surface configuration, ice thickness, volume and bedrockcharacteristics. Annals of Glaciology 3: 8391.CrossRefGoogle Scholar
Institut für Angewandte Geodäsie. 1991. Berkner Island. Topographic map, preliminary edition digital data, Map ST21–24. Scale 1:1,000,000. Frankfurt: Institut fiir Angewandte Geodasie.Google Scholar
Jacobs, S. 1992. The voyage of iceberg B-9. American Scientist 80 (1): 3242.Google Scholar
SCAR. 1993. Antarctic digital database user's guide and reference manual. This manual accompanies a CDROM. Cambridge: Scientific Committee on Antarctic Research.Google Scholar
Shabtaie, S., and Bentley, C. R.. 1988. Ice-thickness map of the west Antarctic ice streams by radar sounding. Annals of Glaciology 11: 126136.CrossRefGoogle Scholar
Thiel, E.C. 1962. The amount of ice on planet Earth. In: Wexler, H., Rubin, M.J., and Caskey, J.E. (editors). Antarctic research. Washington, DC: American Geophysical Union (Geophysical Monographs 7): 172175.Google Scholar
Thomson, J.W., and Cooper, A.P.R.. 1993. The SCAR Antarctic digital topographic database. Antarctic Science 5 (3): 239244.CrossRefGoogle Scholar
Vaughan, D.G. 1992. Chasing the rogue icebergs. New Scientist 137 (1855): 2427.Google Scholar
Vinnik, A.B., Dubovskoy, B.V., Koblents, Ya.P., and Korotkevitch, Ye.S.. 1976. Novyye dannye po osnovnym morfometricheskim kharakteristikam Antarktidy [New data on morphometric characteristics of Antarctica]. Sovetskaya Antarkticheskaya Ekspeditsiya. Informatsionnyy Byulleten93: 1318.Google Scholar