Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin
An 18-month deployment of moored sensors in Iceland Basin allows characterization of near-inertial (frequencies near the Coriolis frequency f with periods of ~14 h) internal gravity wave generation and propagation in a region with an active mesoscale eddy field and strong seasonal wind and heat forc...
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eScholarship, University of California
2024
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ftcdlib:oai:escholarship.org:ark:/13030/qt0db31975 2024-04-21T08:05:29+00:00 Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin Voet, Gunnar Waterhouse, Amy Savage, Anna Kunze, Eric MacKinnon, Jennifer Alford, Matthew Colosi, John Simmons, Harper Klenz, Thilo Kelly, Samuel Moum, James Whalen, Caitlin Lien, Ren-Chieh Girton, James 2024-01-01 application/pdf https://escholarship.org/uc/item/0db31975 unknown eScholarship, University of California qt0db31975 https://escholarship.org/uc/item/0db31975 CC-BY article 2024 ftcdlib 2024-03-27T16:06:08Z An 18-month deployment of moored sensors in Iceland Basin allows characterization of near-inertial (frequencies near the Coriolis frequency f with periods of ~14 h) internal gravity wave generation and propagation in a region with an active mesoscale eddy field and strong seasonal wind and heat forcing. The seasonal cycle in surface forcing deepens the mixed layer in winter and controls excitation of near-inertial energy. The mesoscale eddy field modulates near-inertial wave temporal, horizontal, and vertical scales, as well as propagation out of the surface layer into the deep permanent pycnocline. Wind-forced near-inertial energy has the most active downward propagation within anticyclonic eddies. As oceanic surface and bottom boundaries act to naturally confine the propagation of internal waves, the vertical distribution of these waves can be decomposed into a set of “standing” vertical modes that each propagate horizontally at different speeds. The lowest modes, which propagate quickly away from their generation sites, are most enhanced when the mixed layer is deep and are generally directed southward. Article in Journal/Newspaper Iceland University of California: eScholarship |
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Open Polar |
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University of California: eScholarship |
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ftcdlib |
language |
unknown |
description |
An 18-month deployment of moored sensors in Iceland Basin allows characterization of near-inertial (frequencies near the Coriolis frequency f with periods of ~14 h) internal gravity wave generation and propagation in a region with an active mesoscale eddy field and strong seasonal wind and heat forcing. The seasonal cycle in surface forcing deepens the mixed layer in winter and controls excitation of near-inertial energy. The mesoscale eddy field modulates near-inertial wave temporal, horizontal, and vertical scales, as well as propagation out of the surface layer into the deep permanent pycnocline. Wind-forced near-inertial energy has the most active downward propagation within anticyclonic eddies. As oceanic surface and bottom boundaries act to naturally confine the propagation of internal waves, the vertical distribution of these waves can be decomposed into a set of “standing” vertical modes that each propagate horizontally at different speeds. The lowest modes, which propagate quickly away from their generation sites, are most enhanced when the mixed layer is deep and are generally directed southward. |
format |
Article in Journal/Newspaper |
author |
Voet, Gunnar Waterhouse, Amy Savage, Anna Kunze, Eric MacKinnon, Jennifer Alford, Matthew Colosi, John Simmons, Harper Klenz, Thilo Kelly, Samuel Moum, James Whalen, Caitlin Lien, Ren-Chieh Girton, James |
spellingShingle |
Voet, Gunnar Waterhouse, Amy Savage, Anna Kunze, Eric MacKinnon, Jennifer Alford, Matthew Colosi, John Simmons, Harper Klenz, Thilo Kelly, Samuel Moum, James Whalen, Caitlin Lien, Ren-Chieh Girton, James Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
author_facet |
Voet, Gunnar Waterhouse, Amy Savage, Anna Kunze, Eric MacKinnon, Jennifer Alford, Matthew Colosi, John Simmons, Harper Klenz, Thilo Kelly, Samuel Moum, James Whalen, Caitlin Lien, Ren-Chieh Girton, James |
author_sort |
Voet, Gunnar |
title |
Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
title_short |
Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
title_full |
Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
title_fullStr |
Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
title_full_unstemmed |
Near-Inertial Energy Variability in a Strong Mesoscale Eddy Field in the Iceland Basin |
title_sort |
near-inertial energy variability in a strong mesoscale eddy field in the iceland basin |
publisher |
eScholarship, University of California |
publishDate |
2024 |
url |
https://escholarship.org/uc/item/0db31975 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
qt0db31975 https://escholarship.org/uc/item/0db31975 |
op_rights |
CC-BY |
_version_ |
1796944979823689728 |