M.C. Sigert
Ice flow direction change in interior West Antarctica
Sigert, M.C.; Welch, B.; Morse, D.; Vieli, A.; Blankenship, D.D.; Joughin, I.; King, E.C.; Leysinger Vieli, G.J.-M.C.; Payne, A.J.; Jacobel, R.
Authors
B. Welch
D. Morse
A. Vieli
D.D. Blankenship
I. Joughin
E.C. King
G.J.-M.C. Leysinger Vieli
A.J. Payne
R. Jacobel
Abstract
Upstream of Byrd Station (West Antarctica), ice-penetrating radar data reveal a distinctive fold structure within the ice, in which isochronous layers are unusually deep. The fold has an axis more than 50 kilometers long, which is aligned up to 45- to the ice flow direction. Although explanations for the fold’s formation under the present flow are problematic, it can be explained if flow was parallel to the fold axis È1500 years ago. This flow change may be associated with ice stream alterations nearer the margin. If this is true, central West Antarctica may respond to future alterations more than previously thought.
Citation
Sigert, M., Welch, B., Morse, D., Vieli, A., Blankenship, D., Joughin, I., …Jacobel, R. (2004). Ice flow direction change in interior West Antarctica. Science, 305(5692), 1948-1951. https://doi.org/10.1126/science.1101072
Journal Article Type | Article |
---|---|
Publication Date | Sep 1, 2004 |
Deposit Date | Jan 20, 2009 |
Journal | Science |
Print ISSN | 0036-8075 |
Electronic ISSN | 1095-9203 |
Publisher | American Association for the Advancement of Science |
Peer Reviewed | Peer Reviewed |
Volume | 305 |
Issue | 5692 |
Pages | 1948-1951 |
DOI | https://doi.org/10.1126/science.1101072 |
Publisher URL | http://www.sciencemag.org/cgi/reprint/305/5692/1948.pdf |
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