A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone
Ice drift in the marginal ice zone (MIZ) is a very important feature of air-ice-ocean interaction at high latitude. Thermally generated surface winds, blowing from ice to water (ice breeze) with some deflection due to the earth rotation, force the ice drift and ocean currents near the MIZ. By changi...
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ftdtic:ADA530519 2023-05-15T15:07:05+02:00 A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone Chu, P. C. NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY 1988-02 text/html http://www.dtic.mil/docs/citations/ADA530519 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA530519 en eng http://www.dtic.mil/docs/citations/ADA530519 Approved for public release; distribution is unlimited. DTIC Snow Ice and Permafrost *DRIFT *ICE *OCEAN CURRENTS DEFLECTION MARGINAL ICE ZONES EARTH(PLANET) SURFACE TEMPERATURE HIGH LATITUDES UPWELLING WIND WATER TIME DEPENDENCE TEMPERATURE GRADIENTS *ICE BREEZE *MARGINAL ICE ZONE MIZ(MARGINAL ICE ZONE) Text 1988 ftdtic 2016-02-23T03:53:38Z Ice drift in the marginal ice zone (MIZ) is a very important feature of air-ice-ocean interaction at high latitude. Thermally generated surface winds, blowing from ice to water (ice breeze) with some deflection due to the earth rotation, force the ice drift and ocean currents near the MIZ. By changing the surface temperature gradient, the ice motion and the ocean currents feed back on the surface winds. A coupled air-ice-ocean theoretical model for the MIZ is employed to discuss the ice drift pattern with such a feedback mechanism. The steady-state solutions show that an off-ice and divergent wind field not only producee a dilation of the MIZ (as people generally think), but also generates a compaction of MIZ for some circumstances. An ice divergence/convergence criterion is found. The time-dependent solutions show that the ice motion exhibits two bifurcations. First, it bifurcates into decaying and growing modes. Second, the growing mode bifurcatee into non-oscillatory and oscillatory states. Finally, the model predicts the ice edge upwelling. Offshore Mechanics and Arctic Engineering, 4, 83-90 Text Arctic Ice permafrost Defense Technical Information Center: DTIC Technical Reports database Arctic |
institution |
Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost *DRIFT *ICE *OCEAN CURRENTS DEFLECTION MARGINAL ICE ZONES EARTH(PLANET) SURFACE TEMPERATURE HIGH LATITUDES UPWELLING WIND WATER TIME DEPENDENCE TEMPERATURE GRADIENTS *ICE BREEZE *MARGINAL ICE ZONE MIZ(MARGINAL ICE ZONE) |
spellingShingle |
Snow Ice and Permafrost *DRIFT *ICE *OCEAN CURRENTS DEFLECTION MARGINAL ICE ZONES EARTH(PLANET) SURFACE TEMPERATURE HIGH LATITUDES UPWELLING WIND WATER TIME DEPENDENCE TEMPERATURE GRADIENTS *ICE BREEZE *MARGINAL ICE ZONE MIZ(MARGINAL ICE ZONE) Chu, P. C. A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
topic_facet |
Snow Ice and Permafrost *DRIFT *ICE *OCEAN CURRENTS DEFLECTION MARGINAL ICE ZONES EARTH(PLANET) SURFACE TEMPERATURE HIGH LATITUDES UPWELLING WIND WATER TIME DEPENDENCE TEMPERATURE GRADIENTS *ICE BREEZE *MARGINAL ICE ZONE MIZ(MARGINAL ICE ZONE) |
description |
Ice drift in the marginal ice zone (MIZ) is a very important feature of air-ice-ocean interaction at high latitude. Thermally generated surface winds, blowing from ice to water (ice breeze) with some deflection due to the earth rotation, force the ice drift and ocean currents near the MIZ. By changing the surface temperature gradient, the ice motion and the ocean currents feed back on the surface winds. A coupled air-ice-ocean theoretical model for the MIZ is employed to discuss the ice drift pattern with such a feedback mechanism. The steady-state solutions show that an off-ice and divergent wind field not only producee a dilation of the MIZ (as people generally think), but also generates a compaction of MIZ for some circumstances. An ice divergence/convergence criterion is found. The time-dependent solutions show that the ice motion exhibits two bifurcations. First, it bifurcates into decaying and growing modes. Second, the growing mode bifurcatee into non-oscillatory and oscillatory states. Finally, the model predicts the ice edge upwelling. Offshore Mechanics and Arctic Engineering, 4, 83-90 |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY |
format |
Text |
author |
Chu, P. C. |
author_facet |
Chu, P. C. |
author_sort |
Chu, P. C. |
title |
A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
title_short |
A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
title_full |
A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
title_fullStr |
A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
title_full_unstemmed |
A Mesoscale Air-Ice-Ocean Feedback Mechanism for the Ice Drift in the Marginal Ice Zone |
title_sort |
mesoscale air-ice-ocean feedback mechanism for the ice drift in the marginal ice zone |
publishDate |
1988 |
url |
http://www.dtic.mil/docs/citations/ADA530519 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA530519 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost |
genre_facet |
Arctic Ice permafrost |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA530519 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766338651319435264 |