Role of shelf morphology in grounding-line stability: a numerical approach
The main concern of this study is to discover how the transition from a shallow to an overdeepened, foredeepened shelf might affect grounding-line translation of the West Antarctic Ice Sheet (WAIS). Deep shelves permit a larger influx of relatively warm Circumpolar Deep Water (CDW), which melts the...
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ftlouisianastuir:oai:digitalcommons.lsu.edu:gradschool_theses-3509 2023-06-11T04:07:14+02:00 Role of shelf morphology in grounding-line stability: a numerical approach Robinson, Rhonika 2009-01-01T08:00:00Z application/pdf https://digitalcommons.lsu.edu/gradschool_theses/2510 https://doi.org/10.31390/gradschool_theses.2510 https://digitalcommons.lsu.edu/context/gradschool_theses/article/3509/viewcontent/uc.pdf unknown LSU Digital Commons https://digitalcommons.lsu.edu/gradschool_theses/2510 doi:10.31390/gradschool_theses.2510 https://digitalcommons.lsu.edu/context/gradschool_theses/article/3509/viewcontent/uc.pdf LSU Master's Theses West Antarctic Ice Sheet continental shelf morphology grounding line basal melting Earth Sciences text 2009 ftlouisianastuir https://doi.org/10.31390/gradschool_theses.2510 2023-05-28T19:02:34Z The main concern of this study is to discover how the transition from a shallow to an overdeepened, foredeepened shelf might affect grounding-line translation of the West Antarctic Ice Sheet (WAIS). Deep shelves permit a larger influx of relatively warm Circumpolar Deep Water (CDW), which melts the ice at grounding lines, and thereby, create a potentially unstable situation in which ice retreat may accelerate. Numerical analysis of the responses of marine ice sheets on various shelf profiles confirmed that a change in shelf morphology changes ice sheet dynamics. Ice sheet retreat on an overdeepened, foredeepened shelf is, at least, 3 times faster than ice sheet retreat on a shallow shelf that deepens toward the basin. Therefore, we can conclude that as the shelf transformed from its previous shallow, slightly dipping configuration to the present overdeepened, foredeepened configuration the ice sheet, indeed, became more susceptible to rapid retreat. Text Antarc* Antarctic Ice Sheet LSU Digital Commons (Louisiana State University) Antarctic West Antarctic Ice Sheet |
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LSU Digital Commons (Louisiana State University) |
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ftlouisianastuir |
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unknown |
topic |
West Antarctic Ice Sheet continental shelf morphology grounding line basal melting Earth Sciences |
spellingShingle |
West Antarctic Ice Sheet continental shelf morphology grounding line basal melting Earth Sciences Robinson, Rhonika Role of shelf morphology in grounding-line stability: a numerical approach |
topic_facet |
West Antarctic Ice Sheet continental shelf morphology grounding line basal melting Earth Sciences |
description |
The main concern of this study is to discover how the transition from a shallow to an overdeepened, foredeepened shelf might affect grounding-line translation of the West Antarctic Ice Sheet (WAIS). Deep shelves permit a larger influx of relatively warm Circumpolar Deep Water (CDW), which melts the ice at grounding lines, and thereby, create a potentially unstable situation in which ice retreat may accelerate. Numerical analysis of the responses of marine ice sheets on various shelf profiles confirmed that a change in shelf morphology changes ice sheet dynamics. Ice sheet retreat on an overdeepened, foredeepened shelf is, at least, 3 times faster than ice sheet retreat on a shallow shelf that deepens toward the basin. Therefore, we can conclude that as the shelf transformed from its previous shallow, slightly dipping configuration to the present overdeepened, foredeepened configuration the ice sheet, indeed, became more susceptible to rapid retreat. |
format |
Text |
author |
Robinson, Rhonika |
author_facet |
Robinson, Rhonika |
author_sort |
Robinson, Rhonika |
title |
Role of shelf morphology in grounding-line stability: a numerical approach |
title_short |
Role of shelf morphology in grounding-line stability: a numerical approach |
title_full |
Role of shelf morphology in grounding-line stability: a numerical approach |
title_fullStr |
Role of shelf morphology in grounding-line stability: a numerical approach |
title_full_unstemmed |
Role of shelf morphology in grounding-line stability: a numerical approach |
title_sort |
role of shelf morphology in grounding-line stability: a numerical approach |
publisher |
LSU Digital Commons |
publishDate |
2009 |
url |
https://digitalcommons.lsu.edu/gradschool_theses/2510 https://doi.org/10.31390/gradschool_theses.2510 https://digitalcommons.lsu.edu/context/gradschool_theses/article/3509/viewcontent/uc.pdf |
geographic |
Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
LSU Master's Theses |
op_relation |
https://digitalcommons.lsu.edu/gradschool_theses/2510 doi:10.31390/gradschool_theses.2510 https://digitalcommons.lsu.edu/context/gradschool_theses/article/3509/viewcontent/uc.pdf |
op_doi |
https://doi.org/10.31390/gradschool_theses.2510 |
_version_ |
1768380215430479872 |