Near-inertial mixing in the central Arctic Ocean
Observations were made in April 2007 of horizontal currents, hydrography, and shear microstructure in the upper 500 m from a drifting ice camp in the central Arctic Ocean. An approximately 4-day-long time series, collected about 10 days after a storm event, shows enhanced near-inertial oscillations...
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Online Access: | https://hdl.handle.net/1956/17668 https://doi.org/10.1175/jpo-d-13-0133.1 |
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ftunivbergen:oai:bora.uib.no:1956/17668 2023-05-15T14:51:36+02:00 Near-inertial mixing in the central Arctic Ocean Fer, Ilker 2018-01-02T10:32:11Z application/pdf https://hdl.handle.net/1956/17668 https://doi.org/10.1175/jpo-d-13-0133.1 eng eng American Meteorological Society Norges forskningsråd: 229786 urn:issn:0022-3670 urn:issn:1520-0485 https://hdl.handle.net/1956/17668 https://doi.org/10.1175/jpo-d-13-0133.1 cristin:1149300 Copyright 2014 American Meteorological Society Journal of Physical Oceanography VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Peer reviewed Journal article 2018 ftunivbergen https://doi.org/10.1175/jpo-d-13-0133.1 2023-03-14T17:42:54Z Observations were made in April 2007 of horizontal currents, hydrography, and shear microstructure in the upper 500 m from a drifting ice camp in the central Arctic Ocean. An approximately 4-day-long time series, collected about 10 days after a storm event, shows enhanced near-inertial oscillations in the first half of the measurement period with comparable upward- and downward-propagating energy. Rough estimates of wind work and near-inertial flux imply that the waves were likely generated by the previous storm. The near-inertial frequency band is associated with dominant clockwise rotation in time of the horizontal currents and enhanced dissipation rates of turbulent kinetic energy. The vertical profile of dissipation rate shows elevated values in the pycnocline between the relatively turbulent underice boundary layer and the deeper quiescent water column. Dissipation averaged in the pycnocline is near-inertially modulated, and its magnitude decays approximately at a rate implied by the reduction of energy over time. Observations suggest that near-inertial energy and internal wave–induced mixing play a significant role in vertical mixing in the Arctic Ocean. publishedVersion Article in Journal/Newspaper Arctic Arctic Ocean University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Arctic Ocean Journal of Physical Oceanography 44 8 2031 2049 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Fer, Ilker Near-inertial mixing in the central Arctic Ocean |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
description |
Observations were made in April 2007 of horizontal currents, hydrography, and shear microstructure in the upper 500 m from a drifting ice camp in the central Arctic Ocean. An approximately 4-day-long time series, collected about 10 days after a storm event, shows enhanced near-inertial oscillations in the first half of the measurement period with comparable upward- and downward-propagating energy. Rough estimates of wind work and near-inertial flux imply that the waves were likely generated by the previous storm. The near-inertial frequency band is associated with dominant clockwise rotation in time of the horizontal currents and enhanced dissipation rates of turbulent kinetic energy. The vertical profile of dissipation rate shows elevated values in the pycnocline between the relatively turbulent underice boundary layer and the deeper quiescent water column. Dissipation averaged in the pycnocline is near-inertially modulated, and its magnitude decays approximately at a rate implied by the reduction of energy over time. Observations suggest that near-inertial energy and internal wave–induced mixing play a significant role in vertical mixing in the Arctic Ocean. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Fer, Ilker |
author_facet |
Fer, Ilker |
author_sort |
Fer, Ilker |
title |
Near-inertial mixing in the central Arctic Ocean |
title_short |
Near-inertial mixing in the central Arctic Ocean |
title_full |
Near-inertial mixing in the central Arctic Ocean |
title_fullStr |
Near-inertial mixing in the central Arctic Ocean |
title_full_unstemmed |
Near-inertial mixing in the central Arctic Ocean |
title_sort |
near-inertial mixing in the central arctic ocean |
publisher |
American Meteorological Society |
publishDate |
2018 |
url |
https://hdl.handle.net/1956/17668 https://doi.org/10.1175/jpo-d-13-0133.1 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Journal of Physical Oceanography |
op_relation |
Norges forskningsråd: 229786 urn:issn:0022-3670 urn:issn:1520-0485 https://hdl.handle.net/1956/17668 https://doi.org/10.1175/jpo-d-13-0133.1 cristin:1149300 |
op_rights |
Copyright 2014 American Meteorological Society |
op_doi |
https://doi.org/10.1175/jpo-d-13-0133.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
44 |
container_issue |
8 |
container_start_page |
2031 |
op_container_end_page |
2049 |
_version_ |
1766322744768593920 |