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Registros recuperados: 7
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ACTION RECOPLA - Inventaire et bancarisation des données de Géosciences Marines pour les façades Atlantique, Manche et Méditerranée ArchiMer
Gautier, Emeric; Kerjean, Mathieu; Satra Le Bris, Catherine; Bourillet, Jean-francois.
This report presents the inventory work realized for all the Marine Geoscience dept data acquired on the French continental shelf. It lists the bathymetric, seismic and backscattering data acquired, processed and interpreted in English Channel, Atlantic and Mediterranean. All the maps used for this inventory are available within the GIS "Manche Atlantique" and "Golfe du Lion".
Tipo: Text Palavras-chave: Inventaire; SIG; Manche; Atlantique; Méditerranée; Bathymétrie; Imagerie acoustique; Sismique; Données brutes; Traitées; Interprétées; GeoBIS; Inventory; GIS; Englsih Channel; Atlantic; Mediterranean Sea; Backscatter; Seismic; Raw; Processed; Interpreted data; GeoBIS.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00014/12558/9426.pdf
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Active faulting and deep crustal structure of the Eastern Sicily Margin ArchiMer
Dellong, David.
In the Ionian Sea (central Mediterranean) the slow convergence between Africa and Eurasia results in the formation of a narrow subduction zone. The nature of the crust of the subducting plate remains debated and could represent the last remnants of the Neo-Tethys ocean. The origin of the Ionian basin is also under discussion, especially concerning the rifting mechanisms as the Malta Escarpment could represent a remnant of this opening. This subduction retreats toward the south-east (motion occurring since the last 35 Ma) but is confined to the narrow Ionian basin. A major lateral slab tear fault is required to accommodate the slab rollback.This fault is thought to propagate along the eastern Sicily margin but its precise location remains controversial.This...
Tipo: Text Palavras-chave: Méditerranée; Ionien; Calabre; Géodynamique; Marge; Faille de déchirure lithosphérique; Sismicité; Sismique; Grand-angle; Bathymétrie; Gravimétrie; Modélisation; Mediterranean; Ionian; Calabria; Geodynamic; Subduction; Margin; STEP fault; Wide-angle seismic; Seismicity; Bathymetry; Gravity; Modelling.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00499/61026/64430.pdf
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Cycles sédimentaires dans le système turbiditique du Congo : nature et origine ArchiMer
Picot, Marie.
Turbidite systems are huge submarine sedimentary fans located off rivers, at the foot of the continental slope. They constitute the most distal terrigeneous deposits of a fluvial system. Their internal structure, defined as a stacking of channel-levee systems, show architectural changes through time. Forcing factors of these architectural changesare still poorly understood, and the respective role of internal (related to the own functioning of the system) or external forcing factors (climate, seal-level variations, tectonics) remains debated. To better understand the role of these controlling factors, a detailed study of the Congo system architecture was carried out. This study was conducted as part of the Reprezaï research project (Ifremer/IUEM, since...
Tipo: Text Palavras-chave: Système turbiditique; Congo; Quaternaire terminal; Cycles sédimentaires; Progradation et rétrogradation; Avulsion; Lobes; Paléoclimat; Sismique; Carottes sédimentaires; Turbidite system; Congo; Quaternary; Sedimentary cycles; Progradation; Retrogradation; Avulsion; Lobes; Paleoclimate; Geophysical data; Sedimentary cores Thèse.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00312/42275/41599.pdf
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Enregistrements stratigraphiques des cycles climatiques et eustatiques du Quaternaire terminal - Modélisations de la marge continentale du Golfe du Lion. ArchiMer
Jouet, Gwenael.
Earth's climate oscillated during the Late Quaternary following the major glacial-interglacial cycles. These well-known variations influenced continental and marine sedimentary records worldwide. However, the associated changes of global sea-level and of environmental factors are not precisely documented, neither are their stratigraphic signatures. The extensive geophysical and sedimentological investigations carried out in the Gulf of Lions (Western Mediterranean) since the early 90's allow us to explore the expanded sedimentary records preserved on this continental margin during the Late Quaternary. The combination of high sediment supply (largely from Alpine glaciers) and significant subsidence favoured an almost continuous record, at the shelf edge, of...
Tipo: Text Palavras-chave: Late Quaternary; Lithology; Seismic; Gulf of Lions; Stratigraphic modelling; Glacio Eustatic cycles; Climate; Deltaic margin; Sequence Stratigraphy; Quaternaire terminal; Lithologie; Sismique; Golfe du Lion; Modélisations stratigraphiques; Cycles Glacio Eustatiques; Climat; Marge deltaïque; Stratigraphie Séquentielle.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-3692.pdf
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Evolution Géodynamique du domaine Ouest-offshore de la Nouvelle-Calédonie et de ses extensions vers la Nouvelle-Zélande ArchiMer
Collot, Julien.
The southwest Pacific results from the fragmentation of Gondwanaland since the Cretaceous time. The purpose of the current PhD work is to deepen our understanding of the history of the New Caledonia and Fairway basins, located west of New Caledonia, in order to better constrain the geodynamical evolution of the SW Pacific from Cretaceous to Oligocene. The analysis of new geophysical data has led to distinguish 3 main phases of this fragmentation: 1 Mid Cretaceous formation of the Fairway-Aotea Basin in a continental intra-arc position. The formation of this basin reflects the initial stage of continental fragmentation of the Eastern Gondwana margin. The causes of this fragmentation are to be searched for in a major change of the dynamics of the...
Tipo: Text Palavras-chave: Subduction; Obduction; Norfolk; Lord Howe; Gondwana; Taranaki; New Caledonia; Fairway; Aotea; Magnetic; Gravity; Seismic; Subduction; Obduction; Norfolk; Lord Howe; Gondwana; Taranaki; Nouvelle Calédonie; Fairway; Aotea; Magnétisme; Gravimétrie; Sismique.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/these-6520.pdf
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Protocole de protection de la faune marine et campagnes sismiques ArchiMer
Ducatel, Cecile; Le Gall, Yves; Lurton, Xavier.
Ce document précise les mesures prises par l’Ifremer pour la protection de la faune marine lors de l’utilisation des sources sismiques appartenant à la classe 1 (> 500 in 3). Avant de présenter le protocole à appliquer lors des campagnes de géosciences marines, les principes de l’évaluation des risques sonores sont rappelés.
Tipo: Text Palavras-chave: Sismique; Mammifères marins; Tortues; Seuils; PTS; TTS; Zone d’exclusion; MMOs; PAM; Recherche pré-tir; Démarrage progressif; Arrêt des tirs.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00623/73516/72827.pdf
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Very High Resolution 3D seismic: a new imaging tool for sub-bottom profiling ArchiMer
Marsset, Tania; Marsset, Bruno; Thomas, Yannick; Didailler, Stephane.
This note presents the first results of the development of a 3D Very High Resolution seismic method. Particular attention was paid to the design of an operational system to be in agreement with the expected goals in term of acquisition and processing. A set of three examples, collected in various geological environments, is presented.
Tipo: Text Palavras-chave: Imagery; 3D; VHR; Seismic; Imagerie; 3D; THR; Sismique.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-495.pdf
Registros recuperados: 7
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