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About the seasonal and fortnightly variabilities of the Mediterranean outflow

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Author(s): C. Millot | J. Garcia-Lafuente

Journal: Ocean Science Discussions (OSD)
ISSN 1812-0806

Volume: 7;
Issue: 6;
Start page: 2043;
Date: 2010;
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ABSTRACT
CTD time series from the HYDRO-CHANGES programme and INGRES projects have been collected simultaneously (2004–2008) on the Moroccan shelf and at the Camarinal and Espartel Sills in the strait of Gibraltar. They provide information that supports results recently obtained from the analysis of the two former time series, as well as from a reanalysis of CTD GIBEX profiles (1985–1986). The outflow of Mediterranean Waters, which does not show a clear seasonal variability before entering the strait, strongly mixes within the strait, due mainly to the internal tide, with the seasonally variable inflow of Atlantic Water. The outflow thus gets marked seasonal and fortnightly variabilities within the strait. Furthermore, since the outflow entering the strait displays marked spatial heterogeneity and long-term temporal variabilities, predicting its characteristics when in the ocean appears almost impossible.
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