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Environmental constraints on West Antarctic ice-sheet formation

Journal Article:

Abstract

Small perturbations in Antarctic environmental conditions can culminate in the demise of the Antarctic ice sheet's western sector. This may have happened during the last interglacial period, and could recur within the next millennium due to atmospheric warming from trace gas and CO/sub 2/ increases. In this study, we investigate the importance of sea-level, accumulation rate, and ice influx from the East Antarctic ice sheet in the re-establishment of the West Antarctic ice sheet from a thin cover using a time-dependent numerical ice-shelf model. Our results show that a precursor to the West Antarctic ice sheet can form within 3000 years. Sea-level lowering caused by ice-sheet development in the Northern Hemisphere has the greatest environmental influence. Under favorable conditions, ice grounding occurs over all parts of the West Antarctic ice sheet except up-stream of Thwaites Glacier and in the Ross Sea region.
Publication Date:
Jan 01, 1987
Product Type:
Journal Article
Reference Number:
EDB-89-102742
Resource Relation:
Journal Name: J. Glaciol.; (United Kingdom); Journal Volume: 33:115
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; CONCENTRATION RATIO; ICE; MELTING; ICE CAPS; MATHEMATICAL MODELS; ANTARCTIC REGIONS; GREENHOUSE EFFECT; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; POLAR REGIONS; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
6084019
Research Organizations:
Department of Geophysical Sciences, University of Chicago, Chicago, Illinois 60637, USA
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JOGLA
Submitting Site:
CDIC
Size:
Pages: vp
Announcement Date:

Journal Article:

Citation Formats

Lindstrom, D R, and MacAyeal, D R. Environmental constraints on West Antarctic ice-sheet formation. United Kingdom: N. p., 1987. Web.
Lindstrom, D R, & MacAyeal, D R. Environmental constraints on West Antarctic ice-sheet formation. United Kingdom.
Lindstrom, D R, and MacAyeal, D R. 1987. "Environmental constraints on West Antarctic ice-sheet formation." United Kingdom.
@misc{etde_6084019,
title = {Environmental constraints on West Antarctic ice-sheet formation}
author = {Lindstrom, D R, and MacAyeal, D R}
abstractNote = {Small perturbations in Antarctic environmental conditions can culminate in the demise of the Antarctic ice sheet's western sector. This may have happened during the last interglacial period, and could recur within the next millennium due to atmospheric warming from trace gas and CO/sub 2/ increases. In this study, we investigate the importance of sea-level, accumulation rate, and ice influx from the East Antarctic ice sheet in the re-establishment of the West Antarctic ice sheet from a thin cover using a time-dependent numerical ice-shelf model. Our results show that a precursor to the West Antarctic ice sheet can form within 3000 years. Sea-level lowering caused by ice-sheet development in the Northern Hemisphere has the greatest environmental influence. Under favorable conditions, ice grounding occurs over all parts of the West Antarctic ice sheet except up-stream of Thwaites Glacier and in the Ross Sea region.}
journal = {J. Glaciol.; (United Kingdom)}
volume = {33:115}
journal type = {AC}
place = {United Kingdom}
year = {1987}
month = {Jan}
}