Numerical Lagrangian study of typical pathways for water masses in the North Western Mediterranean
BERGER H. ; PETRENKO A. ; DOGLIOLI A.
Centre d'Océanologie de Marseille
(Abstract received 07/17/2009 for session C)
The numerical Lagrangian diagnostic tool Ariane is used to determine the main pathways in the North Western Mediterranean (NWM) and their associated transports . Quantitative and qualitative simulations are made for this region with Eulerian outputs from the ocean regional circulation model Symphonie for years 2001 to 2003. A clear correlation is shown between the mean position of the Northern Current and the bathymetry. The transport for the pathway linking Corsican waters and the Balearic channel is evaluated around 0.25 Sv. A strong recirculation in the Ligurian sea appears in our diagnostics. We named it the Ligurian Recirculation. The preliminary focus on it shows that water masses involved are centered around 500-meter depth. Future analysis on tracers (temperature and salinity) could allow us to link these results with specific water masses.
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