Topography and Grounding in a Simple Bottom Layer Model
A reduced-gravity model for a dense bottom layer under a motionless deep layer is used to investigate bottom layer flow with topography. The two competing effects in the model are topography, which introduces a topographic β effect, and strong layer thickness variation, which allows for the possibil...
Published in: | Journal of Geophysical Research: Oceans |
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Language: | English |
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American Geophysical Union
1993
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Online Access: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:3425909 https://doi.org/10.1029/92JC03018 |
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ftharvardudash:oai:dash.harvard.edu:1/3425909 2023-05-15T13:57:56+02:00 Topography and Grounding in a Simple Bottom Layer Model Speer, Kevin Tziperman, Eli Feliks, Yizhak 1993 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:3425909 https://doi.org/10.1029/92JC03018 en_US eng American Geophysical Union http://dx.doi.org/10.1029/92JC03018 Journal of Geophysical Research -All Series- Speer, Kevin, Eli Tziperman, and Yizhak Feliks. 1993. Topography and grounding in a simple bottom layer model. Journal of Geophysical Research, Oceans 98(C5): 8547–8558. 0148-0227 http://nrs.harvard.edu/urn-3:HUL.InstRepos:3425909 doi:10.1029/92JC03018 Journal Article 1993 ftharvardudash https://doi.org/10.1029/92JC03018 2022-04-04T12:42:11Z A reduced-gravity model for a dense bottom layer under a motionless deep layer is used to investigate bottom layer flow with topography. The two competing effects in the model are topography, which introduces a topographic β effect, and strong layer thickness variation, which allows for the possibility of zero-layer thickness or grounding. The goal is to arrive at a simple, observationally relevant characterization of the model which can help to distinguish different dynamical mechanisms operating in the ocean. Several regimes are identified, including situations for which the layer depth goes to zero with and without topography. Ways of distinguishing observationally between competing effects are suggested. The study is motivated by the observed shift of Antarctic Bottom Water in the western North Atlantic Ocean from the west to the east; this phenomenon is used to discriminate key elements of the model. Earth and Planetary Sciences Version of Record Article in Journal/Newspaper Antarc* Antarctic North Atlantic Harvard University: DASH - Digital Access to Scholarship at Harvard Antarctic Journal of Geophysical Research: Oceans 98 C5 8547 8558 |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
description |
A reduced-gravity model for a dense bottom layer under a motionless deep layer is used to investigate bottom layer flow with topography. The two competing effects in the model are topography, which introduces a topographic β effect, and strong layer thickness variation, which allows for the possibility of zero-layer thickness or grounding. The goal is to arrive at a simple, observationally relevant characterization of the model which can help to distinguish different dynamical mechanisms operating in the ocean. Several regimes are identified, including situations for which the layer depth goes to zero with and without topography. Ways of distinguishing observationally between competing effects are suggested. The study is motivated by the observed shift of Antarctic Bottom Water in the western North Atlantic Ocean from the west to the east; this phenomenon is used to discriminate key elements of the model. Earth and Planetary Sciences Version of Record |
format |
Article in Journal/Newspaper |
author |
Speer, Kevin Tziperman, Eli Feliks, Yizhak |
spellingShingle |
Speer, Kevin Tziperman, Eli Feliks, Yizhak Topography and Grounding in a Simple Bottom Layer Model |
author_facet |
Speer, Kevin Tziperman, Eli Feliks, Yizhak |
author_sort |
Speer, Kevin |
title |
Topography and Grounding in a Simple Bottom Layer Model |
title_short |
Topography and Grounding in a Simple Bottom Layer Model |
title_full |
Topography and Grounding in a Simple Bottom Layer Model |
title_fullStr |
Topography and Grounding in a Simple Bottom Layer Model |
title_full_unstemmed |
Topography and Grounding in a Simple Bottom Layer Model |
title_sort |
topography and grounding in a simple bottom layer model |
publisher |
American Geophysical Union |
publishDate |
1993 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:3425909 https://doi.org/10.1029/92JC03018 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_relation |
http://dx.doi.org/10.1029/92JC03018 Journal of Geophysical Research -All Series- Speer, Kevin, Eli Tziperman, and Yizhak Feliks. 1993. Topography and grounding in a simple bottom layer model. Journal of Geophysical Research, Oceans 98(C5): 8547–8558. 0148-0227 http://nrs.harvard.edu/urn-3:HUL.InstRepos:3425909 doi:10.1029/92JC03018 |
op_doi |
https://doi.org/10.1029/92JC03018 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
98 |
container_issue |
C5 |
container_start_page |
8547 |
op_container_end_page |
8558 |
_version_ |
1766265868202803200 |