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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Language: | English |
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ftcdlib:qt1690f80c 2023-05-15T16:41:43+02:00 Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method Khazendar, A Rignot, E Larour, E 2007-10-16 application/pdf http://www.escholarship.org/uc/item/1690f80c english eng eScholarship, University of California qt1690f80c http://www.escholarship.org/uc/item/1690f80c Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Khazendar, A; Rignot, E; & Larour, E. (2007). Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method. Geophysical Research Letters, 34(19). doi:10.1029/2007GL030980. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/1690f80c article 2007 ftcdlib https://doi.org/10.1029/2007GL030980 2017-10-13T22:51:24Z 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 Geophysical Research Letters 34 19 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
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 |
spellingShingle |
Khazendar, A Rignot, E Larour, E Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method |
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 |
http://www.escholarship.org/uc/item/1690f80c |
genre |
Ice Shelf Ice Shelves |
genre_facet |
Ice Shelf Ice Shelves |
op_source |
Khazendar, A; Rignot, E; & Larour, E. (2007). Larsen B Ice Shelf rheology preceding its disintegration inferred by a control method. Geophysical Research Letters, 34(19). doi:10.1029/2007GL030980. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/1690f80c |
op_relation |
qt1690f80c http://www.escholarship.org/uc/item/1690f80c |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2007GL030980 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
19 |
_version_ |
1766032186489700352 |