Consulta: subjectFacets:"Deep water"
Registros recuperados: 17
Data/hora: 14/06/2024 20:05:16

Observations of open-ocean deep convection in the northwestern Mediterranean Sea: Seasonal and interannual variability of mixing and deep water masses for the 2007–2013 period
Provedor de dados: 5
Autores: Houpert, L.; Durrieu De Madron, X. Durrieu; Testor, P.; Bosse, A.; D'Ortenzio, F.; Bouin, M. N.; Dausse, D.; Le Goff, H.; Kunesch, S.; Labaste, M.; Coppola, L.; Mortier, L.; Raimbault, P.
We present here a unique oceanographic and meteorological dataset focus on the deep convection processes. Our results are essentially based on in situ data (mooring, research vessel, glider, and profiling float) collected from a multi-platform and integrated monitoring system (MOOSE: Mediterranean Ocean Observing System on Environment), which monitored continuously the northwestern Mediterranean Sea since 2007, and in particular high-frequency potential temperature, salinity and current measurements from the mooring LION located within the convection region.  From 2009 to 2013, the mixed layer depth reaches the seabed, at a depth of 2330m, in February. Then, the violent vertical mixing of the whole water column lasts between 9 and 12 days setting up the...
Tipo: Text
Palavras-chave: Physical oceanography; Ocean observations; Dense water formation; Open-ocean deep convection; Mixed layer; Gulf of lions; Deep water; Mediterranean Sea.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00355/46588/46400.pdf

The Western Mediterranean Deep Water: A proxy for climate change - art. no. L12608
Provedor de dados: 5
Autores: Rixen, Michel; Beckers, J; Levitus, S; Antonov, J; Boyer, T; Maillard, Catherine; Fichaut, Michele; Balopoulos, E; Iona, S; Dooley, H; Garcia, M; Manca, B; Giorgetti, A; Manzella, G; Mikhailov, N; Pinardi, N; Zavatarelli, M.
Reconstructions of Mediterranean ocean temperature fields back to 1950 show a proxy relationship between heat content changes in the North Atlantic and the Western Mediterranean Deep Water ( WMDW) formed in the Gulf of Lions in winter, because of consistent air-sea heat fluxes over these areas, strongly correlated to the North Atlantic Oscillation ( NAO).
Tipo: Text
Palavras-chave: North Atlantic; West mediterranee; Thermohaline circulation; Temperature variation; Deep water; Water masses; Air sea heat flux.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-760.pdf

Utilisation du submersible Cyana pour l'etude du macroplancton fragile
Provedor de dados: 5
Autores: Laval, P.
The gelatinous macroplanktonic organisms living in the deep sea can only be studied with manned submersibles. There is presently in increasing interest in the study of the role of this part of the pelagic ecosystem, because they are strongly involved in the transformation of the particulate organic matter. Their transparency, small size and mobility present technical challenges, unanticipated by the designers of the first submersibles, aimed at the sea bottom observation. Despite these limitations, the use of conventional submersibles has brought very interesting results. It is hoped that engineers will take into account the requirements of pelagic observations in the design of future submersibles.
Tipo: Text
Palavras-chave: Pelagic environment; Zooplankton; Ecosystems; Deep water; Manned vehicles.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1152.pdf

Utilisation des submersibles en biologie et en ecologie abyssale
Provedor de dados: 5
Autores: Alayse, Anne-marie.
With the advent of deep submergence research vessels (DSRVs) biological and ecological studies of ocean deeps have made great strides. Especially these submersibles allowed to conduct physiological and biochemical experiments on benthic fauna directly on the bottom or on board with alive retrieved animals. A second great interest is the possibility to work in chaotic areas and on microenvironments. Without DSRVs most of measurements and observations obtained on hydrothermals vents would had been impossible. We will present the different equipment designed for the two French DSRVs used during the cruises conducted by the Departement "Environnement Profond" de l'IFREMER to study hydrothermal and "normal" deep-sea ecosystems. We will discuss the new devices...
Tipo: Text
Palavras-chave: Oceanography; Hydrothermal springs; Ecosystems; Abyssal zone; Cruises; Ecology; Biology; Deep water; Unmanned vehicles; Manned vehicles.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1146.pdf

A study on inorganic carbon components in the Andaman Sea during the post monsoon season
Provedor de dados: 5
Autores: Sarma, Vvss; Narvekar, Pv.
Extensive data have been collected on the carbon dioxide system during the post monsoon season in the eastern Bay of Bengal and the Andaman Sea of the northeastern Indian Ocean. The vertical distribution of temperature and salinity in the eastern Bay of Bengal were similar to that in the Andaman Sea down to 700-800 m. Below 1200 m depth the salinity remained constant at 34.90 in the Andaman Sea whereas it decreased to 34.80 in the eastern Bay of Bengal. On the other hand, deep waters (&gt; 1200 m) of the Andaman Sea were warmer than those of the Bay of Bengal by approximately 2 degreesC. Dissolved oxygen concentrations in the subsurface waters were higher in the Andaman Sea than in the central Bay of Bengal and Arabian Sea due to lower rates of...
Tipo: Text
Palavras-chave: Carbone inorganique; Dissociation; Eaux profondes; Golfe du Bengale; Mer d’Andaman; Inorganic carbon; Deep water; Dissociation; Bay of Bengal; Andaman Sea.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00322/43359/42856.pdf

History and dynamics of the overexploitation of the blackspot sea bream (Pagellus bogaraveo) in the Bay of Biscay
Provedor de dados: 5
Autores: Lorance, Pascal.
The blackspot sea bream (Pagellus bogaraveo) used to be a major species in the landings from the Bay of Biscay up to the early 1980s. Nowadays, it is only a minor bycatch. Up to the mid-70s, more than 15 000 tonnes of blackspot sea bream were landed annually in Spanish and French ports. Then, catches declined sharply from 1975 to 1985 and have stayed at low levels ever since. Here, the full history of the fishery collapse is described using time-series of landings since the 1900s. Fishing mortalities of the main demersal stocks (hake, anglerfish, sole) were in the range 0.2-0.5 during the last 30 years. It is likely that the blackspot sea bream stock was exploited at similar levels, which are shown here to be unsustainable. The blackspot sea bream is...
Tipo: Text
Palavras-chave: Deep water; Management; Sex change.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00005/11600/8229.pdf

A new genus of deep-sea solenocerid shrimp (decapoda: penaeoidea) from papua new guinea
Provedor de dados: 5
Autores: Chan, Tin-yam.
A new genus and species of deep-sea shrimp, Maximiliaeus odoceros, was collected from the Solomon Sea off Papua New Guinea. This penaeoid has a characteristic carapace: bearing large teeth on its entire dorsal border, and the presence of three parallel carinae that nearly run the entire length of the lateral carapace surface. Phylogenetic analysis using PEPCK and NaK sequences confirmed that this new taxon belongs to Solenoceridae.
Tipo: Text
Palavras-chave: Decapoda; Deep water; Maximiliaeus odoceros; Papua New Guinea; Penaeoidea; Solenoceridae.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00219/32977/31621.pdf

Sea trials and supporting technologies of manned submersible "Shinkai 6500".
Provedor de dados: 5
Autores: Iwai, Y; Nakanishi, T; Takahashi, K.
After the four years of development of the modern maximum depth submersible, JAMSTEC has successfully completed the training dives of "SHINKAI 6500", a new manned submersible whose maximum operating depth is 6,500 meters, from June to October in this year. "SHINKAI 6500" was constructed by Kobe Shipyard and Machinary Works of Mitsubishi Heavy Industries Ltd. (MHI) and marked 6,465m and 6,527m dives in the Japan Trench during the sea trials with the support "YOKOSUKA" (built by Kawasaki Heavy Industries Ltd.) in August 1989. This paper presents the results of the sea trials, training dives and the features of "SHINKAI 6500" with her supporting technologies.
Tipo: Text
Palavras-chave: Japan; Deep water; Underwater cameras; Biology; Manned vehicles; Marine technology.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1136.pdf

Mesures geotechniques par grand fond
Provedor de dados: 5
Autores: Cochonat, Pierre; Dansy, G; Leduc, Bernard; Meunier, Jacques; Harmegnies, Francois; Floury, L.
The mechanical behaviour of sediments is usually studied from laboratory core analyses which do not take into account the real state of in-situ stresses. Therefore, the aimed purpose is presently to determine the in-situ geotechnical properties which mainly depend on the relationship between fine-grained particles and intergranular fluids. At IFREMER, these achievements have been pursued in the framework of 2 scientific program: "Nodules and Sedimentary Processes and Instability on Slopes, for which surficial measurements were conducted on selected seafloor targets usually pre-defined from high resolution geophysical data." 2 kinds of instrumentation were developed in correlation to 2 different strategies of handling at sea. There is the instrumentation of...
Tipo: Text
Palavras-chave: Submarine cables; Deep sea mining; Offshore equipment; Geotechnology; Submersibles; Sedimentary structures; Sedimentology; Ferromanganese nodules; Instability; Marine technology; Sediments; Ocean floor; Deep water.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1157.pdf

Geological sampling in deep water: A new instrument is necessary.
Provedor de dados: 5
Autores: Girardeau, J; Auzende, Jean-marie; Boillot, G.
The Nautile submersible is used to observe the underwater geological structures and to conduct geological sampling in deep water. But it is not sufficient because it is not possible to measure the faults in the oceanic rifts.
Tipo: Text
Palavras-chave: Faults; Palaeomagnetism; Tectonics; Submersibles; Surveying underwater; Surveys; Seafloor sampling; Marine technology; Deep water.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1154.pdf

Dicrotrichura tricincta gen. et spec. nov.: A new tantulocaridan (Crustacea: Maxillopoda) from the Mediterranean deep waters off Corsica
Provedor de dados: 16
Autores: Huys, Rony.
The new genus and species, Dicrotrichura tricincta, is described from deep mud (1220 m) in the Ligurian Sea (western Mediterranean). It is the first tantulocaridan not found to be attached to a crustacean host but free living in the sediment. It is assigned to the Deoterthridae on the basis of the absence of a rostrum, the abdominal segmentation and the characteristic cephalic pore pattern. It can be distinguished from all known tantulocaridans in the presence of peculiar, bi-articulated caudal setae and the difference in thoracopodal setation between leg 2 and legs 3-5. Some new structures located on the attachment disc are described for the first time. D. tricincta is the second tantulocaridan to be recorded from the Mediterranean.
Tipo: Article / Letter to the editor
Palavras-chave: Tantulocarida; Dicrotrichura tricincta gen. et sp. nov.; Mediterranean; Deep water.
Ano: 1990
URL: http://www.repository.naturalis.nl/record/504183

Garthambrus, a new genus of deep water parthenopid crabs (Crustacea: Decapoda: Brachyura) from the Indo-Pacific, with description of a new species from the Seychelles
Provedor de dados: 16
Autores: Ng, P.K.L.
A new genus of parthenopid crab, Garthambrus gen. nov., characterised by a broad carapace with strongly raised branchial and gastric regions, distinctive rostrum, sub-cylindrical ambulatory meri and a long distal segment of the second male pleopod, is established for six deep water species from various parts of the Pacific. A new species, Garthambrus posidon spec, nov., is also described from depths of between 480 to 600 m off the Seychelles in the Indian Ocean. It differs from its closest congener, G. poupini (Garth, 1993), in having a proportionately broader carapace, less granulated carapace and chelipedal surfaces, and in the form of the carapace regions.
Tipo: Article / Letter to the editor
Palavras-chave: Crustacea; Decapoda; Parthenopidae; Garthambrus gen. nov.; Garthambrus posidon spec. nov.; Deep water; Indo-Pacihc; Seychelles; 42.74.
Ano: 1996
URL: http://www.repository.naturalis.nl/record/318833

New and redescribed encrusting species of Alcyonium from the Atlantic Ocean (Octocorallia: Alcyonacea: Alcyoniidae)
Provedor de dados: 16
Autores: Stokvis, F.R.; Ofwegen, L.P. van.
Three new species of Alcyonium are described and illustrated: Alcyonium megasclerum and A. rubrum from the Cape Verde Islands, and A. profundum from the Mid Atlantic Ridge. Two species are redescribed and figured: A. grandiflorum Tixier-Durivault &amp; d’Hondt, 1975 and A. maristenebrosi Stiasny, 1937. Pseudoalcyonium novum Tixier-Durivault &amp; d’Hondt, 1975 is synonymized with Alcyonium bocagei (Saville Kent, 1870).
Tipo: Article / Letter to the editor
Palavras-chave: Octocorallia; Alcyonacea; Alcyoniidae; Alcyonium; New species; Redescriptions; Atlantic Ocean; Deep water; 42.72; 42.70.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/198498

Les courants et la circulation des eaux sur le plateau continental sénégalais
Provedor de dados: 20
Autores: Diouf, Sidiya.
Ce travail porte prinipalement sur les courants marins et en particuliers sur la circulation dans la zone côtière sénégalaise et les masses d'eaux qu'on y rencontre. Nous avons donné quelques notions générales sur les courant marins. Au large de la côte sénégalaise, il y a deux grandes circulations: (1) le courant nord-équatorial qui prend naissance vers les îles du Cap-Vert et qui transporte les eaux froides du courant dit des Canaries vers l'ouest; (2) le contre-courant équatorial transportrant vers l'est les eaux chaudes et salées formées sur le bord sud du courant nord-équatorial.  Prés de la côte, les courants de surface ont une forte variabilité due à la succession du courant des Canaries et du contre-courant équatorial. Les courants de marée sont...
Tipo: Theses and Dissertations
Palavras-chave: Coastal zone; Cutting underwater; Swell; Wave forces; Ocean currents; Current data; Ocean currents; Wind-driven circulation; Upwelling; Cold water masses; Tropical oceanography; Deep water; Ocean currents; Ocean currents; Http://aims.fao.org/aos/agrovoc/c_12883; Http://aims.fao.org/aos/agrovoc/c_12883.
Ano: 1993
URL: http://hdl.handle.net/1834/4073

West African Deep Water:Development Prospects In A Global Context
Provedor de dados: 20
Autores: Westwood, J.; Knight, R.
At the end of 1999 there were 233 offshore oil and gas fields in production in the West African region between Angola and the Ivory Coast. These fields currently produce some 3.1 million barrels of liquids per day. The region thus bears itself well in comparison with other shallow water areas of the world such as the North Sea and South East Asia. But it is the immense promise of the giant deepwater 'elephant' fields that is fuelling the current boom in exploration and development in the region and raising the levels of investment coming into it.
Tipo: Working Paper
Palavras-chave: Oil and gas industry; Deep water.
Ano: 2001
URL: http://hdl.handle.net/1834/384

Presencia de tubos Calcáreos biogénicos en la estructura del coral Madracis myriaster (Scleractinia: Pocilloporidae) de aguas profundas en el Caribe colombiano.
Provedor de dados: 20
Autores: López, N.; Santodomingo, N.; Reyes, J.
A large number of branches from the scleractinian coral Madracis myriaster, collected in deep waters of the Colombian Caribbean, showed both inside and around the skeleton calcareous structures constructed by tubiculous organisms. Here, based on the growth strategy of the coral and the physical conditions of deep-water areas, we describe the functional effect of the tube structures on deep coral frameworks formation and growth.
Tipo: Journal Contribution
Palavras-chave: Deep water; Growth; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2008
URL: http://hdl.handle.net/1834/3513

A new species of Acteon (Opisthobranchia: Acteonidae) from Northeast Brazil
Provedor de dados: 103
Autores: Cunha,Carlo Magenta.
A new species of Acteon Montfort 1810, Acteon mirim sp. nov., from Canopus Bank, state of Ceará, Brazil is described based on shell morphology. The new species is compared with other species of the genus reported from Brazil. It differs from other Brazilian species in having a whitish color with dark orange-brown spiral bands and a shell surface covered with small spiral grooves, regularly rectangular.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastropoda; Cephalaspidea; Deep water; Conchology; Taxonomy.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000200012