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	Provedor de dados ArchiMer (3) Autor Danioux, Eric (1) Haines, K (1) Sevellec, Florian (1) Wu, Pl (1) Palavra-chave Circulation thermohaline (3) Thermohaline circulation (3) Diapycnal mixing (1) Eau levantine intermédiaire (1) Formation (1) Freshwater flux impact (1) Inertial waves (1) Influence du flux d'eau douce (1) Levantine Intermediate Water (1) Low frequency variability (1) Modelling (1) Modélisation (1) Mélange diapycnal (1) Ondes inertielles (1) Optimal perturbation (1) PRIMO-O (1) Perturbation optimale (1) Potential vorticity (1) Resonance (1) Résonance (1) Mais... Tipo do documento Text (3) Ano 2007 (2) 1995 (1) País France (3) Idioma Francês (2) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Propagation 3D d'ondes inertielles au sein d'un champ turbulent mésoéchelle ArchiMer Danioux, Eric. A current problem in physical oceanography is to identify the sources of energy at the origin of the abyssal mixing associated with thermohaline circulation. An important source is the inertial waves generated by wind. However, the mechanisms driving this energy from the surface to the deep mixing remain poorly understood. We study here the tridimensional propagation of inertial waves in a fully turbulent mesoscale eddy field with a primitive equations numerical model. After presenting a review of works to date, we describe various methods for extracting the inertial signal. The 3D propagation of inertial waves is then described and rationalized. In particular, two dramatic maxima of the vertical velocity have been found around 100 m and 1700 m. The deep... Tipo: Text Palavras-chave: Potential vorticity; Diapycnal mixing; Thermohaline circulation; Resonance; Inertial waves; Vorticité potentielle; Mélange diapycnal; Circulation thermohaline; Résonance; Ondes inertielles. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-4933.pdf A modelling study of the thermohaline circulation of the Mediterranean Sea: Water formation and dispersal ArchiMer Haines, K; Wu, Pl. A model of the whole Mediterranean sea at 0.25 degrees x 0.25 degrees resolution has been run for ten years with a mean seasonal cycle of forcing using NMC winds and a relaxation to NODC surface temperature and salinity. The winter season water formation and dispersal in the model thermocline has been studied using isopycnal diagnostics and potential vorticity as a water mass tracer. In the eastern basin Levantine Intermediate Water (LIW) is formed in the cyclonic Rhodes gyre and moves west in a continuous mass, accumulating and mixing in the centre of the Northern Ionian. The LIW spreading path is identified both from the high salinity and low potential vorticity values on the 28.8 isopycnal surface. Some LIW then spreads west and south towards Sicily,... Tipo: Text Palavras-chave: PRIMO-O; Circulation thermohaline; Eau levantine intermédiaire; Formation; Modélisation; PRIMO-O; Thermohaline circulation; Levantine Intermediate Water; Water formation; Modelling. Ano: 1995 URL: http://archimer.ifremer.fr/doc/00323/43387/43113.pdf Variabilité basse fréquence endogène et exogène de la ciruclation thermohaline ArchiMer Sevellec, Florian. One of the consequences of the global warming is the modification of the hydrological cycle and then of the freshwater flux get by the ocean which one of its forcing. The ocean circulation, and more accurately the thermohaline circulation, is able to produce some low frequency variability. We are going to study the impact of the freshwater flux on the thermohaline circulation and mainly on the decadal to millennial variability. In the ocean, as in all dynamical systems, two paradigms coexist for the explanation of the observed variability : it can be endogenous or exogenous. Some outstanding results appear. During the study of endogenous variability in a 2D latitude-depth model, the growth mechanism and the oscillation one of a centennial mode are analyzed... Tipo: Text Palavras-chave: Optimal perturbation; Freshwater flux impact; Low frequency variability; Thermohaline circulation; Perturbation optimale; Influence du flux d'eau douce; Variabilité basse fréquence; Circulation thermohaline. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-4401.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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