Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas
LONG-TERM GOALS. Our long-term goal is to understand the role that dense water, formed on high-latitude continental shelves, plays in the thermohaline circulation of the Arctic Ocean and the maintenance of the mean hydrographic structure of the deep Arctic basins, e.g. the upper halocline. OBJECTIVE...
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ftdtic:ADA629850 2023-05-15T14:51:08+02:00 Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas Chapman, David C Gawarkiewicz, Glen WOODS HOLE OCEANOGRAPHIC INSTITUTION MA 1999-09-30 text/html http://www.dtic.mil/docs/citations/ADA629850 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA629850 en eng http://www.dtic.mil/docs/citations/ADA629850 Approved for public release; distribution is unlimited. DTIC Physical and Dynamic Oceanography *ARCTIC OCEAN *COASTAL REGIONS *CONTINENTAL SHELVES *DENSITY ARCTIC REGIONS CIRCULATION EDDIES(FLUID MECHANICS) EDDY CURRENTS HIGH DENSITY HIGH LATITUDES HYPOTHESES ICE OPENINGS MAINTENANCE MATHEMATICAL MODELS MODELS MOTION OFFSHORE SALINITY SEA WATER SKILLS TEST AND EVALUATION THERMAL PROPERTIES TRANSPORT WATER WIND Text 1999 ftdtic 2016-05-01T15:22:42Z LONG-TERM GOALS. Our long-term goal is to understand the role that dense water, formed on high-latitude continental shelves, plays in the thermohaline circulation of the Arctic Ocean and the maintenance of the mean hydrographic structure of the deep Arctic basins, e.g. the upper halocline. OBJECTIVES. Our immediate objective is improve our basic understanding and ability to predict (1) the formation and offshore transport of dense shelf waters formed beneath high-latitude coastal polynyas and (2) the pathways by which dense shelf waters enter the deep basins. APPROACH. Our hypothesis is that dense water, formed beneath coastal polynyas, is transported across the shelf by small-scale (15-25 km) eddies (e.g. Gawarkiewicz and Chapman, 1995; Chapman and Gawarkiewicz, 1997; Chapman, 1999; Gawarkiewicz, 1999). These dense water eddies are capable of moving offshore across the shelf break and into the deep basins where they contribute to the maintenance of the observed thermohaline structure. We are testing this hypothesis with (1) process-oriented numerical modeling designed to examine the effects of alongshelf currents, submarine canyons and wind forcing on eddy fluxes, (2) analyses of historical observations from the Chukchi Shelf, and (3) realistic numerical modeling in conjunction with ongoing field programs to test our ability to model realistic coastal polynyas. Text Arctic Arctic Ocean Chukchi Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography *ARCTIC OCEAN *COASTAL REGIONS *CONTINENTAL SHELVES *DENSITY ARCTIC REGIONS CIRCULATION EDDIES(FLUID MECHANICS) EDDY CURRENTS HIGH DENSITY HIGH LATITUDES HYPOTHESES ICE OPENINGS MAINTENANCE MATHEMATICAL MODELS MODELS MOTION OFFSHORE SALINITY SEA WATER SKILLS TEST AND EVALUATION THERMAL PROPERTIES TRANSPORT WATER WIND |
spellingShingle |
Physical and Dynamic Oceanography *ARCTIC OCEAN *COASTAL REGIONS *CONTINENTAL SHELVES *DENSITY ARCTIC REGIONS CIRCULATION EDDIES(FLUID MECHANICS) EDDY CURRENTS HIGH DENSITY HIGH LATITUDES HYPOTHESES ICE OPENINGS MAINTENANCE MATHEMATICAL MODELS MODELS MOTION OFFSHORE SALINITY SEA WATER SKILLS TEST AND EVALUATION THERMAL PROPERTIES TRANSPORT WATER WIND Chapman, David C Gawarkiewicz, Glen Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
topic_facet |
Physical and Dynamic Oceanography *ARCTIC OCEAN *COASTAL REGIONS *CONTINENTAL SHELVES *DENSITY ARCTIC REGIONS CIRCULATION EDDIES(FLUID MECHANICS) EDDY CURRENTS HIGH DENSITY HIGH LATITUDES HYPOTHESES ICE OPENINGS MAINTENANCE MATHEMATICAL MODELS MODELS MOTION OFFSHORE SALINITY SEA WATER SKILLS TEST AND EVALUATION THERMAL PROPERTIES TRANSPORT WATER WIND |
description |
LONG-TERM GOALS. Our long-term goal is to understand the role that dense water, formed on high-latitude continental shelves, plays in the thermohaline circulation of the Arctic Ocean and the maintenance of the mean hydrographic structure of the deep Arctic basins, e.g. the upper halocline. OBJECTIVES. Our immediate objective is improve our basic understanding and ability to predict (1) the formation and offshore transport of dense shelf waters formed beneath high-latitude coastal polynyas and (2) the pathways by which dense shelf waters enter the deep basins. APPROACH. Our hypothesis is that dense water, formed beneath coastal polynyas, is transported across the shelf by small-scale (15-25 km) eddies (e.g. Gawarkiewicz and Chapman, 1995; Chapman and Gawarkiewicz, 1997; Chapman, 1999; Gawarkiewicz, 1999). These dense water eddies are capable of moving offshore across the shelf break and into the deep basins where they contribute to the maintenance of the observed thermohaline structure. We are testing this hypothesis with (1) process-oriented numerical modeling designed to examine the effects of alongshelf currents, submarine canyons and wind forcing on eddy fluxes, (2) analyses of historical observations from the Chukchi Shelf, and (3) realistic numerical modeling in conjunction with ongoing field programs to test our ability to model realistic coastal polynyas. |
author2 |
WOODS HOLE OCEANOGRAPHIC INSTITUTION MA |
format |
Text |
author |
Chapman, David C Gawarkiewicz, Glen |
author_facet |
Chapman, David C Gawarkiewicz, Glen |
author_sort |
Chapman, David C |
title |
Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
title_short |
Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
title_full |
Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
title_fullStr |
Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
title_full_unstemmed |
Modeling the Formation and Offshore Transport of Dense Shelf Water From High-Latitude Coastal Polynyas |
title_sort |
modeling the formation and offshore transport of dense shelf water from high-latitude coastal polynyas |
publishDate |
1999 |
url |
http://www.dtic.mil/docs/citations/ADA629850 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA629850 |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) |
geographic |
Arctic Arctic Ocean Chukchi Shelf |
geographic_facet |
Arctic Arctic Ocean Chukchi Shelf |
genre |
Arctic Arctic Ocean Chukchi |
genre_facet |
Arctic Arctic Ocean Chukchi |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA629850 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766322203884781568 |