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Registros recuperados: 9
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HyMeX-SOP2: The Field Campaign Dedicated to Dense Water Formation in the Northwestern Mediterranean ArchiMer
Estournel, Claude; Testor, Pierre; Taupier-letage, Isabelle; Bouin, Marie-noelle; Coppola, Laurent; Durand, Pierre; Conan, Pascal; Bosse, Anthony; Brilouet, Pierre-etienne; Beguery, Laurent; Belamari, Sophie; Beranger, Karine; Beuvier, Jonathan; Bourras, Denis; Canut, Guylaine; Doerenbecher, Alexis; Durrieu De Madron, Xavier; D'Ortenzio, Fabrizio; Drobinski, Philippe; Ducrocq, Veronique; Fourrie, Nadia; Giordani, Herve; Houpert, Loic; Labatut, Laurent; Brossier, Cindy Lebeaupin; Nuret, Mathieu; Prieur, Louis; Roussot, Odile; Seyfried, Leo; Somot, Samuel.
The HYdrological cycle in the Mediterranean Experiment (HyMeX) Special Observing Period 2 (SOP2, January 27–March 15, 2013) was dedicated to the study of dense water formation in the Gulf of Lion in the northwestern Mediterranean. This paper outlines the deep convection of winter 2012–2013 and the meteorological conditions that produced it. Alternating phases of mixing and restratification are related to periods of high and low heat losses, respectively. High-resolution, realistic, three-dimensional models are essential for assessing the intricacy of buoyancy fluxes, horizontal advection, and convective processes. At the submesoscale, vertical velocities resulting from symmetric instabilities of the density front bounding the convection zone are crucial...
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Ano: 2016 URL: https://archimer.ifremer.fr/doc/00386/49688/50224.pdf
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Surface circulation in the Eastern Mediterranean using drifters (2005-2007) ArchiMer
Gerin, R.; Poulain, P. -m.; Taupier-letage, Isabelle; Millot, C.; Ben Ismail, S.; Sammari, Cherif.
Within the framework of the EGITTO/EGYPT programs, the spatial structure and the temporal variability of the surface circulation in the eastern basin of the Mediterranean Sea was studied with satellite-tracked drifters. A total of 97 drifters drogued to 15-m nominal depth were released between September 2005 and March 2007, regularly along ship-of-opportunity routes in the Sicily Channel and within specific structures during dedicated campaigns in the Levantine sub-basin. This study complements previous ones in the former and in the Ionian, but it is the first one in the latter. After editing and low-pass filtering, the drifter trajectories were used to estimate pseudo-Eulerian statistics: mean current, variance ellipses, mean and eddy kinetic energies. A...
Tipo: Text Palavras-chave: Lagrangian drifters; General circulation; Undrogued drifters; Sea; Variability; Features; Basin; Model; Dynamics.
Ano: 2009 URL: https://archimer.ifremer.fr/doc/00204/31480/29891.pdf
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Courantologie. Sous-région marine Méditerranée occidentale. Evaluation initiale DCSMM. ArchiMer
Pairaud, Ivane; Desmare, Stéphanie; Gatti, Julie; Taupier-letage, Isabelle.
Tipo: Text Palavras-chave: Méditerranée; Courants; Processus physiques; Circulation générale; Variabilité saisonnière; Courants de marée.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00330/44111/43682.pdf
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Time variability on hydrology and biogeochemistry induced by mesoscale eddies in the Algerian Basin: a one year high resolution and multiplatform experiment ArchiMer
Puillat Felix, Ingrid; Taupier-letage, Isabelle; Fuda, Jean-luc.
In the framework of the ELISA project (1997-1998, MAST-3/MTP/MATER program) 1-year high frequency time series were acquired at fixed points in the Algerian Basin, an open sea area of the Mediterranean sea (3000m). This multidisciplinary and multiplatform experiment was dedicated to study the algerian eddies and their influence on general circulation and on biological phenomena. During 3 main cruises, 2 specific  Anticyclonic Eddies (AEs) tracked by satellites images during 4 years were mainly studied by mean of vertical sections, performed inside AEs and in the surrounding smaller structures such as sub-mesoscale filaments and small-scale shear eddies. These sections helped describing the hydrological and biogeocheminal structures of eddies according to...
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Ano: 2016 URL: http://archimer.ifremer.fr/doc/00382/49336/49721.pdf
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Long-term monitoring programme of the hydrological variability in the Mediterranean Sea: a first overview of the HYDROCHANGES network ArchiMer
Schroeder, K.; Millot, C.; Bengara, L.; Ben Ismail, Sana; Bensi, Manuel; Borghini, M.; Budillon, G.; Cardin, Vanessa; Coppola, Laurent; Curtil, Colin; Drago, Aldo; El Moumni, B.; Font, J.; Fuda, Jean-luc; Garcia-lafuente, J.; Gasparini, G. P.; Kontoyiannis, H.; Lefevre, D.; Puig, P.; Raimbault, Patrick; Rougier, Gilles; Salat, J.; Sammari, Cherif; Sanchez Garrido, J. C.; Sanchez-roman, A.; Sparnocchia, Stefania; Tamburini, C.; Taupier-letage, Isabelle; Theocharis, A.; Vargas-yanez, M.; Vetrano, Anna.
The long-term monitoring of basic hydrological parameters (temperature and salinity), collected as time series with adequate temporal resolution (i.e. with a sampling interval allowing the resolution of all important timescales) in key places of the Mediterranean Sea (straits and channels, zones of dense water formation, deep parts of the basins), constitute a priority in the context of global changes. This led CIESM (The Mediterranean Science Commission) to support, since 2002, the HYDROCHANGES programme (www.ciesm.org/marine/programs/hydrochanges.htm), a network of autonomous conductivity, temperature, and depth (CTD) sensors, deployed on mainly short and easily manageable subsurface moorings, within the core of a certain water mass. The HYDROCHANGES...
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Ano: 2013 URL: https://archimer.ifremer.fr/doc/00217/32783/31246.pdf
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Characterizing, modelling and understanding the climate variability of the deep water formation in the North-Western Mediterranean Sea ArchiMer
Somot, Samuel; Houpert, Loic; Sevault, Florence; Testor, Pierre; Bosse, Anthony; Taupier-letage, Isabelle; Bouin, Marie-noelle; Waldman, Robin; Cassou, Christophe; Sanchez-gomez, Emilia; Durrieu De Madron, Xavier; Adloff, Fanny; Nabat, Pierre; Herrmann, Marine.
Observing, modelling and understanding the climate-scale variability of the deep water formation (DWF) in the North-Western Mediterranean Sea remains today very challenging. In this study, we first characterize the interannual variability of this phenomenon by a thorough reanalysis of observations in order to establish reference time series. These quantitative indicators include 31 observed years for the yearly maximum mixed layer depth over the period 1980–2013 and a detailed multi-indicator description of the period 2007–2013. Then a 1980–2013 hindcast simulation is performed with a fully-coupled regional climate system model including the high-resolution representation of the regional atmosphere, ocean, land-surface and rivers. The simulation reproduces...
Tipo: Text Palavras-chave: Deep water formation; Open-sea deep convection; Interannual variability; Mediterranean Sea; Regional climate models; Climate trends.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00348/45948/45654.pdf
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Impact of open-ocean convection on particle fluxes and sediment dynamics in the deep margin of the Gulf of Lions ArchiMer
Stabholz, M.; Durrieu De Madron, X.; Canals, M.; Khripounoff, Alexis; Taupier-letage, Isabelle; Testor, Pierre; Heussner, S.; Kerherve, P.; Delsaut, N.; Houpert, Loic; Lastras, G.; Dennielou, Bernard.
The deep outer margin of the Gulf of Lions and the adjacent basin, in the western Mediterranean Sea, are regularly impacted by open-ocean convection, a major hydrodynamic event responsible for the ventilation of the deep water in the western Mediterranean Basin. However, the impact of open-ocean convection on the flux and transport of particulate matter remains poorly understood. The variability of water mass properties (i.e., temperature and salinity), currents, and particle fluxes were monitored between September 2007 and April 2009 at five instrumented mooring lines deployed between 2050 and 2350-m depth in the deepest continental margin and adjacent basin. Four of the lines followed a NW-SE transect, while the fifth one was located on a sediment wave...
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00125/23654/21571.pdf
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General hydrodynamical features in the ligurian sea inferred from the dyome experiment ArchiMer
Taupier-letage, Isabelle; Millot, Claude.
Tipo: Text Palavras-chave: Hydrodynamique; Mer Ligure; Circulation générale; Moyenne échelle; Variabilité; Hydrodynamics; Ligurian Sea; General circulation; Mesoscale; Variability.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00110/22125/19761.pdf
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Multiscale Observations of Deep Convection in the Northwestern Mediterranean Sea During Winter 2012-2013 Using Multiple Platforms ArchiMer
Testor, Pierre; Bosse, Anthony; Houpert, Loic; Margirier, Felix; Mortier, Laurent; Legoff, Herve; Dausse, Denis; Labaste, Matthieu; Karstensen, Johannes; Hayes, Daniel; Olita, Antonio; Ribotti, Alberto; Schroeder, Katrin; Chiggiato, Jacopo; Onken, Reiner; Heslop, Emma; Mourre, Baptiste; D'Ortenzio, Fabrizio; Mayot, Nicolas; Lavigne, Heloise; De Fommervault, Orens; Coppola, Laurent; Prieur, Louis; Taillandier, Vincent; De Madron, Xavier Durrieu; Bourrin, Francois; Many, Gael; Damien, Pierre; Estournel, Claude; Marsaleix, Patrick; Taupier-letage, Isabelle; Raimbault, Patrick; Waldman, Robin; Bouin, Marie-noelle; Giordani, Herve; Caniaux, Guy; Somot, Samuel; Ducrocq, Veronique; Conan, Pascal.
During winter 2012-2013, open-ocean deep convection which is a major driver for the thermohaline circulation and ventilation of the ocean, occurred in the Gulf of Lions (Northwestern Mediterranean Sea) and has been thoroughly documented thanks in particular to the deployment of several gliders, Argo profiling floats, several dedicated ship cruises, and a mooring array during a period of about a year. Thanks to these intense observational efforts, we show that deep convection reached the bottom in winter early in February 2013 in a area of maximum 28±3 109m9. We present new quantitative results with estimates of heat and salt content at the sub-basin scale at different time scales (on the seasonal scale to a ten days basis) through optimal interpolation...
Tipo: Text Palavras-chave: Ocean observation; Oceanic deep convection; Mediterranean Sea; Energy and buoyancy fluxes; Eddies; Plumes; Symmetric instability.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00415/52639/53494.pdf
Registros recuperados: 9
Primeira ... 1 ... Última
 

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