Modeling of the bottom water flow through the Romanche Fracture Zone with a primitive equation model - Part I: Dynamics

This paper investigates the dynamics of the Antarctic Bottom Water (AABW) flow through the Romanche Fracture Zone (RFZ) in a primitive equation model with a high horizontal and vertical resolution. Two examples of Rows over simple bathymetries show that a reduced gravity model captures the essential...

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Bibliographic Details
Published in:Journal of Marine Research
Main Authors: Ferron, Bruno, Mercier, Herle, Treguier, Anne-marie
Format: Article in Journal/Newspaper
Language:English
Published: Yale University 2000
Subjects:
Circulation model
Fracture zone
Bottom water
Bathymetry
Antarctic
The Antarctic
Antarc*
Online Access:https://archimer.ifremer.fr/doc/2000/publication-802.pdf
https://doi.org/10.1357/002224000763485728
https://archimer.ifremer.fr/doc/00000/802/
Description
Summary:This paper investigates the dynamics of the Antarctic Bottom Water (AABW) flow through the Romanche Fracture Zone (RFZ) in a primitive equation model with a high horizontal and vertical resolution. Two examples of Rows over simple bathymetries show that a reduced gravity model captures the essential dynamics of the primitive equation model. The reduced gravity model is then used as a tool to identify what are the bathymetric structures (sills, narrows) that mostly constrain the AABW flow through the RFZ. When only these structures are represented in the primitive equation model, the AABW how is shown to be coherent with observations (transports, density and velocity structures).

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