Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method
A new, complete velocity field from satellite remote sensing is combined with numerical modeling to infer the rheology of the Larsen B Ice Shelf before its disintegration. The resulting spatial distribution of the flow parameter exhibits large variability, which reflects very well observed ice shelf...
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ftcdlib:oai:escholarship.org:ark:/13030/qt1690f80c 2023-09-05T13:20:20+02:00 Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method Khazendar, A Rignot, E Larour, E 2007-01-01 application/pdf https://escholarship.org/uc/item/1690f80c unknown eScholarship, University of California qt1690f80c https://escholarship.org/uc/item/1690f80c CC-BY Geophysical Research Letters, vol 34, iss 19 Meteorology & Atmospheric Sciences article 2007 ftcdlib 2023-08-21T18:03:14Z A new, complete velocity field from satellite remote sensing is combined with numerical modeling to infer the rheology of the Larsen B Ice Shelf before its disintegration. The resulting spatial distribution of the flow parameter exhibits large variability, which reflects very well observed ice shelf features. This variability is explained by factors including advection of colder ice from tributary glaciers, bottom melting, and the presence of zones of strong shear and fracture. The inferred distribution is applied to simulate numerically the flow regime ofthe ice shelf and to examine its modification by the presence of open rifts and by the retreat of ice shelf front between 1996 and 2000. Results demonstrate that variable rheology is essential to understanding ice shelf evolution, especially the close relationship among frontal retreat, fracture, ice flow acceleration, and the destabilization of ice shelves. Copyright 2007 by the American. Geophysical Union. Article in Journal/Newspaper Ice Shelf Ice Shelves University of California: eScholarship |
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Open Polar |
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University of California: eScholarship |
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language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Khazendar, A Rignot, E Larour, E Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
A new, complete velocity field from satellite remote sensing is combined with numerical modeling to infer the rheology of the Larsen B Ice Shelf before its disintegration. The resulting spatial distribution of the flow parameter exhibits large variability, which reflects very well observed ice shelf features. This variability is explained by factors including advection of colder ice from tributary glaciers, bottom melting, and the presence of zones of strong shear and fracture. The inferred distribution is applied to simulate numerically the flow regime ofthe ice shelf and to examine its modification by the presence of open rifts and by the retreat of ice shelf front between 1996 and 2000. Results demonstrate that variable rheology is essential to understanding ice shelf evolution, especially the close relationship among frontal retreat, fracture, ice flow acceleration, and the destabilization of ice shelves. Copyright 2007 by the American. Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Khazendar, A Rignot, E Larour, E |
author_facet |
Khazendar, A Rignot, E Larour, E |
author_sort |
Khazendar, A |
title |
Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
title_short |
Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
title_full |
Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
title_fullStr |
Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
title_full_unstemmed |
Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
title_sort |
larsen b ice shelf rheology preceding its disintegration inferred by a control method |
publisher |
eScholarship, University of California |
publishDate |
2007 |
url |
https://escholarship.org/uc/item/1690f80c |
genre |
Ice Shelf Ice Shelves |
genre_facet |
Ice Shelf Ice Shelves |
op_source |
Geophysical Research Letters, vol 34, iss 19 |
op_relation |
qt1690f80c https://escholarship.org/uc/item/1690f80c |
op_rights |
CC-BY |
_version_ |
1776201025509654528 |