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The Maintenance of High Primary Production in the Absence of Ekman Upwelling : = The Supply of Nutrients to the Intergyre North Atlantic.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	The Maintenance of High Primary Production in the Absence of Ekman Upwelling :/
Reminder of title:	The Supply of Nutrients to the Intergyre North Atlantic.
Author:	Peabody, Ryan James.
Description:	1 online resource (56 pages)
Notes:	Source: Masters Abstracts International, Volume: 57-05.
Contained By:	Masters Abstracts International57-05(E).
Subject:	Physical oceanography. -
Online resource:	click for full text (PQDT)
ISBN:	9780355953732

The Maintenance of High Primary Production in the Absence of Ekman Upwelling : = The Supply of Nutrients to the Intergyre North Atlantic.
Peabody, Ryan James.

The Maintenance of High Primary Production in the Absence of Ekman Upwelling :The Supply of Nutrients to the Intergyre North Atlantic. - 1 online resource (56 pages)

Source: Masters Abstracts International, Volume: 57-05.

Thesis (M.S.)--Duke University, 2018.

Includes bibliographical references

Ekman suction and pumping are often invoked to explain the observed difference in primary production and chlorophyll a between the North Atlantic subpolar and subtropical gyres. Between the gyres, the intergyre region can be loosely defined by its lack of a strong Ekman suction or pumping of nutrients. Despite the lack of a strong Ekman supply of nutrients, the mean seasonal cycle in chlorophyll a in the intergyre is remarkably similar to that seen in the subpolar gyre. In this thesis, we present research on mechanisms for nutrient supply to the intergyre that might support its high production. Using biogeochemical and physical reanalysis ocean data products, a nutrient budget is constructed for a region in the eastern North Atlantic, within the intergyre. Analysis of this budget shows that the seasonal entrainment flux, resultant from the movement of the mixed layer across vertical nutrient gradients, is responsible for the majority of the nutrient supply to the region. Hydrographic ocean data and particle trajectories run in a numerical model are then used to show that the waters seasonally entrained into the intergyre mixed layer likely originate in the Gulf Stream, linking nutrient supply in the North Atlantic intergyre to high downstream nutrient fluxes observed in the Gulf Stream.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355953732Subjects--Topical Terms:

1178843
Physical oceanography.
Index Terms--Genre/Form:

554714
Electronic books.

The Maintenance of High Primary Production in the Absence of Ekman Upwelling : = The Supply of Nutrients to the Intergyre North Atlantic.
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500 $a Source: Masters Abstracts International, Volume: 57-05.
500 $a Adviser: Susan Lozier.
502 $a Thesis (M.S.)--Duke University, 2018.
504 $a Includes bibliographical references
520 $a Ekman suction and pumping are often invoked to explain the observed difference in primary production and chlorophyll a between the North Atlantic subpolar and subtropical gyres. Between the gyres, the intergyre region can be loosely defined by its lack of a strong Ekman suction or pumping of nutrients. Despite the lack of a strong Ekman supply of nutrients, the mean seasonal cycle in chlorophyll a in the intergyre is remarkably similar to that seen in the subpolar gyre. In this thesis, we present research on mechanisms for nutrient supply to the intergyre that might support its high production. Using biogeochemical and physical reanalysis ocean data products, a nutrient budget is constructed for a region in the eastern North Atlantic, within the intergyre. Analysis of this budget shows that the seasonal entrainment flux, resultant from the movement of the mixed layer across vertical nutrient gradients, is responsible for the majority of the nutrient supply to the region. Hydrographic ocean data and particle trajectories run in a numerical model are then used to show that the waters seasonally entrained into the intergyre mixed layer likely originate in the Gulf Stream, linking nutrient supply in the North Atlantic intergyre to high downstream nutrient fluxes observed in the Gulf Stream.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Physical oceanography. $3 1178843
650 4 $a Biological oceanography. $3 1178855
655 7 $a Electronic books. $2 local $3 554714
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