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	Provedor de dados ArchiMer (27) Autor Le Moine, Olivier (4) Geairon, Philippe (3) Robert, Stephane (3) Coudray, Sylvain (2) Fiandrino, Annie (2) Goraguer, Herle (2) Goulletquer, Philippe (2) Le Boulluec, Marc (2) Maisondieu, Christophe (2) Vincent, Benoit (2) Allen, Gp (1) Baldi, Yoann (1) Bassoullet, Philippe (1) Breton, Marguerite (1) Castaing, P (1) Castaings, Jerome (1) Cetina, Matjaz (1) Cordeau, Cyril (1) Cugier, Philippe (1) Desclaux, Terence (1) Mais... Palavra-chave Hydrodynamique (27) Hydrodynamic (12) Hydrodynamics (6) Modélisation (4) Model (3) Modelling (3) Modèle (3) Renouvellements (3) Sediment (3) Sédiment (3) Essais en bassin (2) Grand Barachois (2) Houle (2) Hydrologie (2) Lagoon (2) Lagune (2) Nutrients (2) Nutriments (2) Renewal rates (2) Saint-Pierre et Miquelon (2) Mais... Tipo do documento Text (27) Ano 2019 (1) 2018 (2) 2017 (2) 2016 (2) 2014 (1) 2013 (1) 2012 (1) 2011 (1) 2009 (1) 2008 (1) 2007 (1) 2006 (2) 2005 (2) 2001 (1) 2000 (1) 1999 (1) 1998 (1) 1993 (1) 1990 (1) 1987 (1) Mais... País France (27) Idioma Francês (23) Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 27 Primeira ... 1 2 ... Última Modelisation morphodynamique de l'embouchure de la seine ArchiMer Waeles, Benoit. The mouth of the Seine has been undergoing intense morphological changes for decades, because of containment work to improve access to the ports of Rouen and Le Havre. A significant trend is the progradation of the downstream estuary. Simultaneously, the surface area of the intertidal mudflats tends to decrease. The estuary's sediments are composed of silt and fine sand (respectively transported from the river Seine and the open sea). Their distribution is linked to the hydrodynamic characteristics of the estuary and may display layered vertical structures. To understand the estuary's morphological changes, a morphodynamic ditigal model is developed from a validated (3D) model of silty sediment transport. A model of suspended fine sand transport as well as... Tipo: Text Palavras-chave: Seine estuary; Modelling; Sediment transport; Hydrodynamic; Morphodynamic; Seine estuaire; Modelisation; Transport sediment; Hydrodynamique; Morphodynamique. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-2195.pdf L'absorption Dynamique des Ondes de Gravité en Régime Instationnaire ArchiMer Maisondieu, Christophe. This study deals with the dynamic absorption of water waves. We focus here our attention on the case of a simple devce, a 2D piston, in order to exploit the well-known expressions of the potential as far as possible in the design of new absorption laws. We consider a semi-infinite two dimensional wave tank closed by a mobile vertical plane. An unsteady wave train generated at infinity impiges on this plate. The problem of the dynamic absorption consists in finding, in real time, the velocity to be given to the plate so that the radiated and the reflected wave trains should cancel each other. We propose here to derive this velocity from the forces measured on the plate. We first derive a frequency dependant transfer function between the optimal velocity of... Tipo: Text Palavras-chave: Hydrodynamique; Ecoulements à surface libre Instationnaire; Absorption Dynamique; Ondes de Gravité Causalité; Identification; Feedback/Feedforward. Ano: 1993 URL: http://archimer.ifremer.fr/doc/00186/29739/29812.pdf Towed Gear Optimisation, application to trawls ArchiMer Roullot, Jean; Vincent, Benoit. IFREMER has been developing and commercialising scientific software to help the conception and optimisation of any kind of trawl. This software named DynamiT makes available a "virtual flume tank" where tests can be achieved without any constraint due to scale effects or other limitation when physically testing out. DynamiT has been used numbers of times to simulate and optimise trawls by different net makers and by IFREMER. The software is based on the resolution of the mechanics (structure and hydrodynamic) equations of a model describing the actual trawl and its rigging. The "user friendly" interface allows the user to iterate "modification and observations" cycles to reach an optimised state of the fishing gear. The process can be used to reduce the... Tipo: Text Palavras-chave: Hydrodynamic; Fuel consumption; Simulation; Model; DynamiT; Software; Fishing; Hydrodynamique; Consommation de carburant; Simulation; Modèle; DynamiT; Logiciel; Pêche. Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/acte-4613.pdf Evolution de l'environnement hydroclimatique du bassin de Marennes-Oléron dans le contexte du changement global ArchiMer Soletchnik, Patrick; Le Moine, Olivier; Polsenaere, Pierre. Dans le contexte du changement global dont la cause anthropique est maintenant reconnue, cette étude dresse un bilan de l’évolution hydro-climatique des Pertuis Charentais (Bassin de Marennes-Oléron) depuis les quarante dernières années. Elle présente une comparaison de la situation hydro-climatique avant et après la « rupture thermique » des années 80-90, reconnue à l’échelle de l’hémisphère Nord et mise également en évidence dans les Pertuis entre 1983-1997. Les deux périodes comparées sont (1977-1991) d’une part et (2000-2015) d’autre part. Entre les deux, l’élévation des températures de l’eau de mer de 1,5°C en moyenne et 3°C en médiane, s’est accompagnée d’une élévation de la salinité (0,6 à 0,9) en lien avec un déficit d’apport des fleuves internes... Tipo: Text Palavras-chave: Hydrologie; Hydro-climat; Hydrodynamique; Bassin de Marennes-Oléron; Evolution; Réchauffement climatique; Apports; Fleuves; Température; Salinité; Nutriments; Chlorophylle a. Ano: 2017 URL: http://archimer.ifremer.fr/doc/00387/49815/50391.pdf Projet lagune du Grand Barachois : Rapport Phase 1 ArchiMer Le Moine, Olivier; Robert, Stephane; Geairon, Philippe; Goraguer, Herle; Goulletquer, Philippe. La dynamique des masses d'eau et les flux de transit semblent favoriser un comblement et/ou des limitations de renouvellement d'eau mettant en péril la durabilité de l’environnement de cette lagune Miquelonnaise. La Préfecture de Saint Pierre et Miquelon et la DTAM, en soutien à la gestion durable de cet environnement, ont sollicité l’Ifremer pour l’évaluation des flux d’alimentation de cette lagune. Une mission sur place a été réalisée en juin 2016, pour coordonner les actions et effectuer un certain nombre de mesures préliminaires (jaugeages et bathymétrie du chenal, courantométrie horizontale). Ces données sont complétées par une acquisition continue des vitesses de courant, avec des données disponibles à ce jour du 2 juin au 15 novembre 2016.... Tipo: Text Palavras-chave: Hydrodynamique; Renouvellements; Saint-Pierre et Miquelon; Lagune; Grand Barachois; Hydrodynamic; Renewal rates; Saint Pierre and Miquelon; Lagoon; Grand Barachois. Ano: 2017 URL: http://archimer.ifremer.fr/doc/00384/49512/50021.pdf Modélisation du transport sédimentaire et des interactions morphodynamiques par les courants de turbidité dans les canyons sous-marins. Application à la Méditerranée Occidentale ArchiMer Payo Payo, Marta. Turbidity currents in submarine canyons are the main contribution for sediment transfer across the continental margins. Geological studies of submarine canyons and associated turbiditic systems for more than 30 years led to an extraordinary breakthrough in the understanding of how turbidite systems evolve. However, these studies remain limited to a posteriori interpretations, based on the distribution of deposits and morphological evidences. The overarching aim of this thesis is to apply a 2DH process-based model to simulate large-scale turbidity currents on two different submarine canyons in the western Mediterranean coast.The work in La Fonera canyon, in the Catalan margin, focuses on the modelling of sediment transport and accumulation resulting from... Tipo: Text Palavras-chave: Canyons sous-marins; Chalutage; Courants de turbidité; Forces de Coriolis; Hydrodynamique; Modélisation; Sédimentologie; Submarine canyons; Trawling; Turbidity current; Modelling; Hydrodynamics; Sedimentology; Coriolis forces. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00498/60919/64280.pdf Caractérisation numérique et expérimentale des effets d'interaction entre une hydrolienne et le milieu marin ArchiMer Maganga, Fabrice. This work aims to characterise by the means of expérimental and numerical modeling, the behavior of marine current turbine and the characteristics of the wake generated under realistic inflow conditions. For that purpose, we used a tri-bladed horizontal axis turbine of 0.7 m of diameter. Particular attention is paid to the flow characteristic effects on the efficiency of the turbine, but also on the generated wake. Tests are carried out in the Ifremer wave and current flume tank in Boulogne-sur-Mer and in the towing tank of Brest, taking into account current profils, upstream turbulence intensity level and disturbances generated by wave/current interaction. The development of a three-dimensional software based on vortex methods, taking into account the non... Tipo: Text Palavras-chave: Hydrodynamique; Essais expérimentaux; Méthodes Vortex; Hydrolienne; Sillage.; Hydrodynamic; Experimental trials; Vortex Methods; Marine Current Turbine; Wake.. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00170/28153/26384.pdf Registros recuperados: 27 Primeira ... 1 2 ... Última

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