Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight
The seasonality of various characteristics of the detached bottom boundary layer of the Middle Atlantic Bight shelfbreak front is examined using a collection of high resolution transects across the front. The analysis follows previous methodology in which accumulated temperature change along isopycn...
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ftdtic:ADA422980 2023-05-15T17:33:40+02:00 Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight Linder, Christopher A. Gawarkiewicz, Glen G. Pickart, Robert G. WOODS HOLE OCEANOGRAPHIC INSTITUTION MA 2004 text/html http://www.dtic.mil/docs/citations/ADA422980 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA422980 en eng http://www.dtic.mil/docs/citations/ADA422980 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography *FRONTS(OCEANOGRAPHY) REPRINTS BOUNDARY LAYER CONTINENTAL SHELVES SEASONAL VARIATIONS NORTH ATLANTIC OCEAN BENTHONIC ZONES UPWELLING MIDDLE ATLANTIC BIGHT SHELFBREAK FRONTS Text 2004 ftdtic 2016-02-21T08:03:41Z The seasonality of various characteristics of the detached bottom boundary layer of the Middle Atlantic Bight shelfbreak front is examined using a collection of high resolution transects across the front. The analysis follows previous methodology in which accumulated temperature change along isopycnals within the front is used to infer the location of the detached layer. The seasonal mean isopycnal at which detachment occurs (approximately 26.0 kg cu.m) is fairly constant throughout the year. However, the vertical scale of the detached layer varies significantly with season, extending 60-80 m above the bottom in winter and spring, but only 20-40 m above the bottom in summer. The vertical scale is controlled by the strength and depth of the seasonal pycnocline. The observations suggest that the detached layer is capable of extending into the euphotic zone during winter and spring. INDEX TERMS: 4528 Oceanography: Physical: Fronts and jets; 4211 Oceanography: General: Benthic boundary layers; 4219 Oceanography: General: Continental shelf processes; 4279 Oceanography: General: Upwelling and convergences. The original document contains color images. All DTIC reproductions will be in black and white. Pub. in Journal of Geophysical Research v109 pc03049, 2004. Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography *FRONTS(OCEANOGRAPHY) REPRINTS BOUNDARY LAYER CONTINENTAL SHELVES SEASONAL VARIATIONS NORTH ATLANTIC OCEAN BENTHONIC ZONES UPWELLING MIDDLE ATLANTIC BIGHT SHELFBREAK FRONTS |
spellingShingle |
Physical and Dynamic Oceanography *FRONTS(OCEANOGRAPHY) REPRINTS BOUNDARY LAYER CONTINENTAL SHELVES SEASONAL VARIATIONS NORTH ATLANTIC OCEAN BENTHONIC ZONES UPWELLING MIDDLE ATLANTIC BIGHT SHELFBREAK FRONTS Linder, Christopher A. Gawarkiewicz, Glen G. Pickart, Robert G. Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
topic_facet |
Physical and Dynamic Oceanography *FRONTS(OCEANOGRAPHY) REPRINTS BOUNDARY LAYER CONTINENTAL SHELVES SEASONAL VARIATIONS NORTH ATLANTIC OCEAN BENTHONIC ZONES UPWELLING MIDDLE ATLANTIC BIGHT SHELFBREAK FRONTS |
description |
The seasonality of various characteristics of the detached bottom boundary layer of the Middle Atlantic Bight shelfbreak front is examined using a collection of high resolution transects across the front. The analysis follows previous methodology in which accumulated temperature change along isopycnals within the front is used to infer the location of the detached layer. The seasonal mean isopycnal at which detachment occurs (approximately 26.0 kg cu.m) is fairly constant throughout the year. However, the vertical scale of the detached layer varies significantly with season, extending 60-80 m above the bottom in winter and spring, but only 20-40 m above the bottom in summer. The vertical scale is controlled by the strength and depth of the seasonal pycnocline. The observations suggest that the detached layer is capable of extending into the euphotic zone during winter and spring. INDEX TERMS: 4528 Oceanography: Physical: Fronts and jets; 4211 Oceanography: General: Benthic boundary layers; 4219 Oceanography: General: Continental shelf processes; 4279 Oceanography: General: Upwelling and convergences. The original document contains color images. All DTIC reproductions will be in black and white. Pub. in Journal of Geophysical Research v109 pc03049, 2004. |
author2 |
WOODS HOLE OCEANOGRAPHIC INSTITUTION MA |
format |
Text |
author |
Linder, Christopher A. Gawarkiewicz, Glen G. Pickart, Robert G. |
author_facet |
Linder, Christopher A. Gawarkiewicz, Glen G. Pickart, Robert G. |
author_sort |
Linder, Christopher A. |
title |
Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
title_short |
Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
title_full |
Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
title_fullStr |
Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
title_full_unstemmed |
Seasonal Characteristics of Bottom Boundary Layer Detachment at the Shelfbreak Front in the Middle Atlantic Bight |
title_sort |
seasonal characteristics of bottom boundary layer detachment at the shelfbreak front in the middle atlantic bight |
publishDate |
2004 |
url |
http://www.dtic.mil/docs/citations/ADA422980 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA422980 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA422980 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766132252068020224 |