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

Type Article
Date 2000-11
Language English
Author(s) Ferron Bruno1, Mercier HerleORCID1, Treguier Anne-Marie1
Affiliation(s) 1 : IFREMER, Lab Phys Oceans, F-29280 Plouzane, France.
Source Journal of Marine Research (0022-2402) (Yale University), 2000-11 , Vol. 58 , N. 6 , P. 837-862
DOI 10.1357/002224000763485728
WOS© Times Cited 2
Keyword(s) Circulation model, Fracture zone, Bottom water, Bathymetry
Abstract 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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