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Registros recuperados: 60
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Caracterización integral de las lagunas del estado de Hidalgo Colegio de Postgraduados
Montero Aguirre, Saúl.
Los cuerpos de agua son importantes para el almacenamiento y abastecimiento de agua potable, riego, generar energía eléctrica, además de ser importantes para disipar la fuerza de las grandes avenidas, estos cuerpos pueden ser utilizados como criaderos de peces y áreas de recreación, de lo cual muchas comunidades obtienen recursos adicionales para sobrevivir. A los ríos descargan las aguas negras de las comunidades que a su paso se encuentran, llevando grandes cantidades de sedimentos y de contaminantes. Las aguas del Río Tulancingo llegan a la Laguna de Metztitlan, la cual en tiempo de lluvias tiende a provocar inundaciones aguas arriba. Este cuerpo de agua al igual que la mayoría de los cuerpos de agua que existen en México, está perdiendo su...
Tipo: Tesis Palavras-chave: Batimetría; Sedimentos; Cuerpos de agua; Cuenca; Morfología; Maestría; Hidrociencias; Bathymetry; Silts; Bodies of water; Basin; Morphology.
Ano: 2008 URL: http://hdl.handle.net/10521/1254
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New insight into the formation and evolution of the East Reykjanes Ridge Current and Irminger Current ArchiMer
Petit, Tillys; Mercier, Herle; Thierry, Virginie.
The Reykjanes Ridge strongly influences the circulation of the North Atlantic Subpolar Gyre as it flows to the Irminger Sea from the Iceland Basin. The circulation is composed of two main along‐ridge currents: the southwestward East Reykjanes Ridge Current (ERRC) in the Iceland Basin and the northeastward Irminger Current (IC) in the Irminger Sea. To study their interconnection through the ridge, as well as their connections with the interior of each basin, velocity and hydrological measurements were carried out along and perpendicular to the crest of the Reykjanes Ridge in June–July 2015 as part of the RREX project. This new dataset changes our view of the ERRC and IC as it reveals undocumented along‐stream evolutions of their hydrological properties,...
Tipo: Text Palavras-chave: North-Atlantic Subpolar Gyre; Bathymetry; Oceanic circulation; Observations.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00591/70347/68407.pdf
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Surveillance Ecologique du site du Blayais - Année 2015 ArchiMer
Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Herve; Doremus, Sandrine; Agion, Tony; Peset, Sébastien; Hervio Heath, Dominique; Sautour, Benoit; Parra, René; Nowaczyck, Antoine; Bachelet, Guy; Leconte, Michel.
Monitoring n° 38 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2015. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique.; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Benthic macrofauna.; Microbiology.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00327/43800/43361.pdf
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Surveillance écologique du site du Blayais, année 2001 ArchiMer
Quintin, Jean-yves.
Monotoring n° 24 of the BLAYAIS nuclear power plant takes into account studies conducted between March and November 2001. Physicochemistry, Hydrobiology, Bacteriology, Zooplankton, Bathymetry, are reported.
Tipo: Text Palavras-chave: Bathymetry; Zooplancton; Microbiology; Hydrology; Physico chemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Bathymétrie; Zooplancton; Microbiologie; Hydrologie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/rapport-5932.pdf
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Évolution récente et sédimentation des plates-formes continentales de la Corse ArchiMer
Pluquet, Fabrice.
This work aimed at displaying and studying morphological and sedimentological features of Corsican seafloor from the coast to depths of -100m. It also aimed at a better knowledge of sediment dynamics under hydrodynamic conditions, and at a reconstitution of the late Quaternary shorelines evolution. Careful analysis of the bathymetry has revealed a very contrasted morphology between the different areas of Corsican shelves, as it has been displayed on an synthetic geomorphological map. In addition, an homogeneous and overall map of surficial sediments of the Corsican shelves seabed was established and two areas, the Balagne and Agriates' platforms to the North of Corsica, and the Bonifacio Straits to the South, were mapped into details. The various...
Tipo: Text Palavras-chave: Fossil shoreline; Late Quaternary; Habitats mapping; Sidescan sonar; Hydrodynamism; Sédimentology; Morphology; Bathymetry; Continental shelves; Corsica; Geosciences; Paléo rivage; Quaternaire récent; Cartographie d'habitats; Sonar latéral; Hydrodynamisme; Sédimentologie; Morphologie; Bathymétrie; Plates formes continentales; Corse; Géosciences.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/these-3363.pdf
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Les peuplements benthiques du plateau insulaire de la Martinique et des zones bathyales adjacentes. Cas particulier de la malacofaune ArchiMer
Paulmier, Gerard; Durand, Francoise.
Several oceanographic surveys in Martinique waters with, as main objectives, either geological mapping and evaluating marine aggregate resources of research into deep water carcinologie resources, nafe produced interesting informtion on benthic pppulations situated from the infralittoral to the bathyal shelf, for the wole of faunistic groups and more specifically for the malacofauna. The distribution of the various faunistic group has been analysed in function to the bathymetric, edaphic and possibly, thermic factors. The infralittoral zones, up to the 20 metres isobath, and circalittoral, between 60  and 80 metres, are known to have the richest populations. Corals, sponges, polychaete annelida and molluscs are the best represented, numerically as well as...
Tipo: Text Palavras-chave: Ecologie; Sédimentologie; Bathymétrie; Peuplements; Benthos; Invertebrés; Communautés; Bivalves; Gastéropodes; Ecology; Sedimentology; Bathymetry; Settelment; Benthos; Invertebrates; Molluscs; Communities; Bivalvia; Gastropoda.
Ano: 1997 URL: https://archimer.ifremer.fr/doc/00480/59191/61880.pdf
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Ultra Wide Swath Sea interferometric multibeam echo sounder with sea bottom imaging system. ArchiMer
Hammerstad, E; Pohner, F.
The SIMRAD EM12 is a new full ocean depth multibeam echo sounder, operating at 13 kHz. By use of interferometric signal processing techniques it will achieve an ultra wide swath geometry of 150 degrees, corresponding to 7.5 times the depth of water. The system will in addition to the bathymetry produce a fully corrected sidescan sonar image of the seafloor, on to the depth soundings, the EM12 has the capability to generate a sidescan image of the seabed.
Tipo: Text Palavras-chave: Ocean floor; Multibeam sonar; Bathymetry; Signal processing; Sonar imagery; Imaging techniques; Side scan sonar; Echosounding; Echosounders.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/acte-1141.pdf
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Bathymetric estimation using MERIS images in coastal sea waters ArchiMer
Minghelli Roman, Audrey; Polidori, Laurent; Mathieu-blanc, Sandrine; Loubersac, Lionel; Cauneau, François.
Bathymetric estimation using remote sensing images has previously been applied to high spatial resolution imagery such as CASI, Ikonos, or SPOT but not on medium spatial resolution images (i.e., MERIS). This choice can be justified when there is a need to map the bathymetry on large areas. In this letter, we present the results of the bathymetry estimation over a large known area, the Gulf of Lion (France), expanding over 270 x 180 km.
Tipo: Text Palavras-chave: MERIS; Coastal zone; Bathymetry.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2597.pdf
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Slope morphologies offshore Dakhla (SW-Moroccan margin) ArchiMer
Benabdellouahed, Massinissa; Baltzer, Agnes; Rabineau, Marina; Aslanian, Daniel; Sahabi, Mohamed; Germond, Fabien; Loubrieu, Benoit; Biari, Youssef.
This study explores a portion of the West African margin at the junction between two well- known segments offshore Dakhla and offshore Mauritania with destructional architecture characterized by giant slides. In between these two segments, the Dakhla segment has historically been described as a constructional section. During an oceanographic Dakhla cruise (2002), high resolution seismic data, swath bathymetry and imagery were acquired around latitude 23° N, offshore Dakhla,. This new data set reveals the existence of varied and complex morphologies on the continental slope, interpreted as a "shallot-shaped" canyon, seafloor depressions or pockmarks, ridges and scarps. These morphologies are interpreted as clues of sedimentary transfers and rupture...
Tipo: Text Palavras-chave: African margin; Bathymetry; Seismic interpretation; Pockmarks; Ridges; Scarps..
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00286/39736/38214.pdf
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Cystoseira baccata meadows along the French Basque coast (Bay of Biscay) as a reference for the implementation of the Water Framework and Marine Strategy EU directives ArchiMer
De Casamajor, Marie-noelle; Derrien-courtel, Sandrine; Lalanne, Yann; Maria Gorostiaga, José; Le Gal, Aodren; Huguenin, Laura; Quintano, Endika; Lissardy, Muriel.
Cystoseira baccata, a biological quality element for the implementation of the Water Framework and Marine Strategy EU Directives, is a dominant species in the subtidal rocky bottoms of the Basque coast. As part of this issue and given the need to better understand the functional character of benthic rocky ecosystems and use them as a reference to anthropogenic changes, two samplings campaigns were conducted in 2014 and 2017. Several population parameters (i.e. frond density, frond length frond-length/total frond-length ratio and taxonomic richness of epibionts) of C. baccata were studied from three sites monitored within the Water Directive Framework in relation to bathymetry during the two campaigns. The results showed a significant influence of...
Tipo: Text Palavras-chave: Bathymetry; Cystoseira baccata; Epiphytes; Foundation species; Population parameters; Water framework directive.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00500/61151/64581.pdf
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Caractérisation des fonds marins et estimation bathymétrique par inversion de modèle de transfert radiatif : Application à l'imagerie hyperspectrale en milieu corallien ArchiMer
Petit, Tristan.
Airborne hyperspectral imaging is a potential candidate for mapping and monitoring coral reefs at large scale and with high spatial resolution. In this thesis, we first present the processing steps to be applied to hyperspectral signals for extracting information about seabed types, bathymetry and water optical properties, and we discuss their efficiency with respect to two main confounding factors: (i) low signal to noise ratio of the measured signals, and (ii) large number and variability of physical interactions occurring between the entrance of sunlight into the atmosphere and its measurement by the hyperspectral sensor. Considering these limitations, we examine the performance of an already existing water column processing method: semi-analytical...
Tipo: Text Palavras-chave: Récifs coralliens; Bathymétrie; Cartographie des habitats benthiques; Hyperspectral; Modèle de transfert radiatif; Inversion par optimisation; Analyse de sensibilité; Coral reefs; Bathymetry; Seabed type mapping; Hyperspectral; Radiative transfer model; Inversion by optimization; Sensitivity analysis.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00400/51135/51905.pdf
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Surveillance écologique du centre nucléaire de production d'électricité du Blayais. Année 2018 ArchiMer
Rumebe, Myriam; Auby, Isabelle; Blanchet, Hugues; Fouet, Marie; Gouriou, Laure; Hervio Heath, Dominique; Sautour, Benoit; Savoye, Nicolas; Sottolichio, Aldo.
Monitoring n° 41 of the Blayais nuclear power plant takes into account studies conducted between April and November 2018. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Microbiology; Benthic macrofauna.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00505/61660/65576.pdf
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Surveillance Ecologique du site du "Blayais" - année 2004 ArchiMer
Quintin, Jean-yves; Castaing, Patrick; Jouanneau, Jean-marie; Oggian, Georges; Leconte, Michel; Parra, René; Sautour, Benoît; Bachelet, Guy; Chaurial, Bernard; Gournier, Nathalie.
Monotoring n° 27 of the BLAYAIS nuclear power plant takes into account studies conducted between March and November 2004. Physicochemistry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, Bathymetry, are reported.
Tipo: Text Palavras-chave: Bathymetry; Benthic macrofauna; Zooplankton; Bacteriology; Hydrobiology; Physicochemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Bathymétrie; Macrofaune benthique; Zooplancton; Microbiologie; Hydrologie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/rapport-1024.pdf
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Hydrologie du Grand Etang de Miquelon. Estimation des flux et renouvellements ArchiMer
Le Moine, Olivier; Geairon, Philippe; Robert, Stephane; Coudray, Sylvain; Fiandrino, Annie; Goraguer, Herle; Goulletquer, Philippe.
This study aims to assess the hydrological fluxes between the ‘Grand Etang’ of Miquelon and the oceanic part. Bathymetric surveys and Doppler current meter data acquisitions were carried out from August 14th, to November 5th, 2014 and from April 1st, to end of July 2015 to allow the following estimates : Total area (227 Ha) and characteristics volumes (total : 6,7 106 m3; oscillating 2,8 106 m3 (40 %); half-tide 5,2 106 m3) Velocity Index of channel to evaluate the average current speed at cross-section channel Fluxes, on flood and ebb tide respectively : Instantaneous flow: maxima at 94,2 et 65 m3/s mean 37.2 et 24.5 m3/s. in 2014 and maxima 85,03 et 73,62 m3/s mean 26,22 et 28,20 m3/s in 2015. Circulating fluxes by tide : maxima 1,06 and 1,09 106 m3,...
Tipo: Text Palavras-chave: Flux hydrologiques; Courantométrie; Bathymétrie; Grand Etang Miquelon; Modélisation; Hydrological fluxes; Current meter data acquisition; Bathymetry; Grand Etang Miquelon; Modelling.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00332/44325/43904.pdf
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Surveillance Ecologique du site du "Blayais" - année 2017 ArchiMer
Rumebe, Myriam; Auby, Isabelle; Hervio Heath, Dominique; Sottolichio, Aldo; Sautour, Benoit; Savoye, Nicolas; Derriennic, Hervé; Blanchet, Hugues; Leconte, Michel; Gouilleux, Benoit; Fouet, Marie; Agion, Tony.
Monitoring n° 40 of the Blayais nuclear power plant takes into account studies conducted between April and November 2017. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Benthic macrofauna; Gironde estuary; Monitoring; Bathymetry; Microbiology.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00477/58876/61407.pdf
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Surveillance Ecologique du site du Blayais - Année 2014 ArchiMer
Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Herve; Schmidt, Sabine; Doremus, Sandrine; Agion, Tony; Hervio Heath, Dominique; Sautour, Benoît; Parra, René; Dindinaud, François; Bachelet, Guy; Leconte, Michel.
Monitoring n° 37 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2014. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported.
Tipo: Text Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Zooplancton; Macrofaune benthique.; Bathymétrie; Estuaire de la Gironde; Surveillance; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Benthic macrofauna.; Bathymetry; Microbiology; Gironde estuary; Monitoring.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00333/44424/44088.pdf
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High-resolution mapping of large gas emitting mud volcanoes on the Egyptian continental margin (Nile Deep Sea Fan) by AUV surveys ArchiMer
Dupre, Stephanie; Buffet, G.; Mascle, J.; Foucher, Jean-paul; Gauger, S.; Boetius, A.; Marfia, Christian.
Two highly active mud volcanoes located in 990-1,265 m water depths were mapped on the northern Egyptian continental slope during the BIONIL expedition of R/V Meteor in October 2006. High-resolution swath bathymetry and backscatter imagery were acquired with an autonomous underwater vehicle (AUV)-mounted multibeam echosounder, operating at a frequency of 200 kHz. Data allowed for the construction of similar to 1 m pixel bathymetry and backscatter maps. The newly produced maps provide details of the seabed morphology and texture, and insights into the formation of the two mud volcanoes. They also contain key indicators on the distribution of seepage and its tectonic control. The acquisition of high-resolution seafloor bathymetry and acoustic imagery maps...
Tipo: Text Palavras-chave: Eastern Mediterranean; Seafloor morphology; Backscatter; Bathymetry; AUV; Nile Deep Sea Fan; Mud volcanoes.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-6395.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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Circulation de bord ouest de l'Atlantique Sud: analyse d'observations lagrangiennes et hydrologiques ArchiMer
Legeais, Jean-francois.
The "World Ocean Circulation experiment" (WOCE) program in the 1990s has produced the equivalent of 300 years of subsurface floats trajectories within the Antarctic Intermediate Water (AAIW) at 800dbar in the South Atlantic ocean, and several hydrological transects. In order to compute the western boundary circulation, the flow is vertically extrapolated by referencing geostrophic hydrological profiles to float speeds. Several transects normal to the continental slope and another one parallel to it off the coast give transports of the water masses with a good transversal and longitudinal resolutions. Floats at 800dbar sampled the Intermediate Western Boundary Current (IWBC) particularly well, and enable one to analyse it from 28°S at the bifurcation of the...
Tipo: Text Palavras-chave: Mesoscale activity; Bathymetry; Hydrological transect; IWBC; AAIW; Western boundary; South Atlantic; Lagrangian floats; Activité de méso échelle; Bathymétrie; Radiale hydrologique; IWBC; AAIW; Bord ouest; Atlantique Sud; Flotteur lagrangien.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-6177.pdf
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Dynamique de renouvellement des masses d'eaux du Grand Etang de Saint Pierre et Miquelon : rapport préliminaire ArchiMer
Le Moine, Olivier; Geairon, Philippe; Goraguer, Herle; Poitevin, Pierre; Robert, Stephane; Goulletquer, Philippe.
In 2013, the project ‘Assessment of the renewable rate of the seawater masses in the Miquelon ‘Grand Etang’ ‘ focused essentially on (1) building a data set originating from all partners (e.g., DTAM, IGN), (2) preliminary sampling of current patterns so as to facilitate the 2014 field sampling strategy. Besides this approach, a census of aerial pictures dated from 1950, 1990 and 2005 were studied to assess the temporal trends of this geographic sector. The field work to be carried out in 2014 are: 1) Bathymetry: data acquisition in the ‘Grand Etang’ in the area presently used for mussel long lines culture to obtain a comprehensive data set, transversal profiles at the strait level at the near vicinity of the current pattern measuring station. 2) Current...
Tipo: Text Palavras-chave: Courantométrie; Bathymétrie; Saint Pierre & Miquelon; Current meters; Bathymetry; Saint Pierre & Miquelon.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00175/28581/26975.pdf
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