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Ce document a pour objectif de préparer une réunion sur le choix du type de charge utile "Acoustique" pour le H-ROV. Ce document s'intéresse à la charge utile "cartographie acoustique". Il est réalisé avec l'objectif de préparer une réunion du groupe de travail...Contributeur (s):
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Ce document a pour objectif de préparer une réunion sur le choix du type de charge utile "Acoustique" pour le H-ROV. Ce document s'intéresse à la charge utile "cartographie acoustique". Il est réalisé avec l'objectif de préparer une réunion du groupe de travail...Contributeur (s):
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Dupre, Stephanie / Berger, Laurent / Le Bouffant, Naig / Scalabrin, Carla / Bourillet, Jean-francois - 2014Fishery acoustic surveys conducted in the Bay of Biscay and dedicated to monitoring and predicting pelagic ecosystem evolution reveal numerous active seeps on the Aquitaine Shelf, east of the shelf break, at water depths ranging from 140 to 185 m. Some acoustic anomalies recorded in the water...Contributeur (s):
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Pierre, Catherine / Bayon, Germain / Blanc-valleron, Marie-madeleine / Mascle, Jean / Dupre, Stephanie - 2014On the passive margin of the Nile deep-sea fan, the active Cheops mud volcano (MV; ca. 1,500 m diameter, ~20–30 m above seafloor, 3,010–3,020 m water depth) comprises a crater lake with hot (up to ca. 42 °C) methane-rich muddy brines in places overflowing down the MV flanks. During the Medeco2...Contributeur (s):
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Mascle, Jean / Mary, Flore / Praeg, Daniel / Brosolo, Laetitia / Camera, Laurent / Ceramicola, Silvia / Dupre, Stephanie - 2014Existing knowledge on the distribution of mud volcanoes (MVs) and other significant fluid/free gas-venting features (mud cones, mud pies, mud-brine pools, mud carbonate cones, gas chimneys and, in some cases, pockmark fields) discovered on the seafloor of the Mediterranean Sea and in the nearby...Contributeur (s):
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Boetius, Antje / Buffet, G / Mascle, Jean / Dupre, Stephanie / Foucher, Jean-paul - 2015Contributeur (s):
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Dupre, Stephanie / Mascle, Jean / Foucher, Jean-paul / Harmegnies, Francois / Woodside, John / Pierre, Catherine - 2014The Menes caldera is a fault-controlled depression (~8 km in diameter) at ~3,000 m water depth in the western province of the Nile deep-sea fan off NW Egypt, comprising seven mud volcanoes (MVs) of which two are active. Based on multichannel and chirp seismic data, temperature profiles, and high-...Contributeur (s):
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Praeg, Daniel / Ketzer, Joao Marcelo / Augustin, Adolfo Herbert / Migeon, Sebastien / Ceramicola, Silvia / Dano, Alexandre / Ducassou, Emmanuelle / Dupre, Stephanie / Mascle, Jean / Rodrigues, Luiz Frederico - 2015On the central Nile deep-sea fan, stratified sediments overlying mass-transport deposits (MTDs) are deformed into slope-parallel seabed undulations associated with fluid seepage. The western part of this system, in water depths of 1,950–2,250 m, is examined using multi-frequency data from hull-...Contributeur (s):
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Bayon, Germain / Dupre, Stephanie / Ponzevera, Emmanuel / Etoubleau, Joel / Cheron, Sandrine / Pierre, Catherine / Mascle, Jean / Boetius, Antje / De Lange, Gert J. - 2013Marine sediments at ocean margins vent substantial amounts of methane(1,2). Microbial oxidation of the methane released can trigger the precipitation of carbonate within sediments and support a broad diversity of seafloor ecosystems(3,4). The factors controlling microbial activity and carbonate...Contributeur (s):
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Pierre, Catherine / Mascle, Jean / Dupre, Stephanie - 2008The MEDECO Leg 2 cruise followed the MEDECO Leg 1 cruise that had crossed the Mediterranean Sea from the west to the east to study benthic communities of the Var canyon, deep corals found on the Calabrian Margin and cold seep ecosystems of the Mediterranean Ridge. The main objective of the MEDECO...Contributeur (s):
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Dupre, Stephanie / Cloetingh, Sierd / Bertotti, Giovanni - 2011In the South Gabon Basin, deep multi-channel seismic reflection and gravity modeling analysis have shed light on key features of the structure of the margin. The thinned continental crust beneath the Gabon Margin appears to be composed of two distinct layers, separated by a clear, strong and more...Contributeur (s):
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Dupre, Stephanie / Woodside, John / Klaucke, Ingo / Mascle, Jean / Foucher, Jean-paul - 2010Fluid escape structures on the Nile Deep Sea Fan were investigated during the MEDIFLUX MIMES expedition in 2004. Mud volcanoes, pockmarks and authigenic carbonate structures were surveyed for the first time with a high-resolution deep-towed 75 kHz sidescan sonar and a 2-8 kHz Chirp sediment...Contributeur (s):
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Foucher, Jean-paul / Dupre, Stephanie / Scalabrin, Carla / Feseker, Tomas / Harmegnies, Francois / Nouze, Herve - 2010The Håkon Mosby mud volcano is a 1.5-km-diameter geological structure located on the Southwest Barents Sea slope at a water depth of 1,270 m. High-definition seabed mapping of the mud volcano has been carried out in 2003 and 2006. A comparative analysis of the bathymetry and backscatter maps...Contributeur (s):
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Huguen, Caroline / Foucher, Jean-paul / Mascle, J. / Ondreas, Helene / Thouement, M. / Gontharet, S. / Stadnitskaia, A. / Pierre, C. / Bayon, Germain / Loncke, L. / Boetius, A. / Bouloubassi, I. / De Lange, G. / Caprais, Jean-claude / Fouquet, Yves / Woodside, J. / Dupre, Stephanie - 2009This paper reports the first "in situ" seafloor observations of fluid escape structures in a fault-controlled caldera-type depression of about 8 km diameter, named the Menes caldera, in the Eastern Mediterranean sea off Egypt (western province of the Nile Deep Sea Fan). A detailed...Contributeur (s):