Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993
In July 1993 we collected hydrographic data and information on chlorophyll distribution on the continental shelf north of Cape Hatteras and across the shelf break at Cape Hatteras. The data show that a warm, transparent mixed layer lies over much colder, euphotic, chlorophyll-rich bottom water on th...
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ftoregonstate:ir.library.oregonstate.edu:t148fn78g 2024-09-15T18:17:16+00:00 Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 Wood, A. Michelle Sherry, Nelson D. Huyer, Adriana, 1945- College of Oceanic and Atmospheric Sciences https://ir.library.oregonstate.edu/concern/articles/t148fn78g English [eng] eng unknown American Geophysical Union https://ir.library.oregonstate.edu/concern/articles/t148fn78g In Copyright Article ftoregonstate 2024-07-22T18:06:03Z In July 1993 we collected hydrographic data and information on chlorophyll distribution on the continental shelf north of Cape Hatteras and across the shelf break at Cape Hatteras. The data show that a warm, transparent mixed layer lies over much colder, euphotic, chlorophyll-rich bottom water on the shelf. This layer has temperature and salinity properties characteristic of the Middle Atlantic Bight (MAB) cold pool, a distinctive mass of cold bottom water formed when cold water from the Gulf of Maine and Scotian Shelf is isolated from surface water by vernal warming and seasonal stratification [Houghton et al., 1982]. The constant density of this chlorophyll-rich water (σФ = 25.0–25.6) combined with a strong chlorophyll gradient along the 25 σФ isopycnal at the shelf break indicates that chlorophyll advected off the shelf at Cape Hatteras in July 1993. TS diagrams further indicate that cold pool water, and the chlorophyll it contained, mixed into upper levels of the Gulf Stream. Thus the MAB may contribute to the nutrient budget of Atlantic surface waters through a long loop of circulation that transports deep water from the Labrador Sea to Cape Hatteras. Article in Journal/Newspaper Labrador Sea ScholarsArchive@OSU (Oregon State University) |
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Open Polar |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
language |
English unknown |
description |
In July 1993 we collected hydrographic data and information on chlorophyll distribution on the continental shelf north of Cape Hatteras and across the shelf break at Cape Hatteras. The data show that a warm, transparent mixed layer lies over much colder, euphotic, chlorophyll-rich bottom water on the shelf. This layer has temperature and salinity properties characteristic of the Middle Atlantic Bight (MAB) cold pool, a distinctive mass of cold bottom water formed when cold water from the Gulf of Maine and Scotian Shelf is isolated from surface water by vernal warming and seasonal stratification [Houghton et al., 1982]. The constant density of this chlorophyll-rich water (σФ = 25.0–25.6) combined with a strong chlorophyll gradient along the 25 σФ isopycnal at the shelf break indicates that chlorophyll advected off the shelf at Cape Hatteras in July 1993. TS diagrams further indicate that cold pool water, and the chlorophyll it contained, mixed into upper levels of the Gulf Stream. Thus the MAB may contribute to the nutrient budget of Atlantic surface waters through a long loop of circulation that transports deep water from the Labrador Sea to Cape Hatteras. |
author2 |
College of Oceanic and Atmospheric Sciences |
format |
Article in Journal/Newspaper |
author |
Wood, A. Michelle Sherry, Nelson D. Huyer, Adriana, 1945- |
spellingShingle |
Wood, A. Michelle Sherry, Nelson D. Huyer, Adriana, 1945- Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
author_facet |
Wood, A. Michelle Sherry, Nelson D. Huyer, Adriana, 1945- |
author_sort |
Wood, A. Michelle |
title |
Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
title_short |
Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
title_full |
Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
title_fullStr |
Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
title_full_unstemmed |
Mixing of chlorophyll from the Middle Atlantic Bight cold pool into the Gulf Stream at Cape Hatteras in July 1993 |
title_sort |
mixing of chlorophyll from the middle atlantic bight cold pool into the gulf stream at cape hatteras in july 1993 |
publisher |
American Geophysical Union |
url |
https://ir.library.oregonstate.edu/concern/articles/t148fn78g |
genre |
Labrador Sea |
genre_facet |
Labrador Sea |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/t148fn78g |
op_rights |
In Copyright |
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1810455291261616128 |