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Registros recuperados: 14
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6.3.1.1 The Ocean Data and Information Network for Africa (ODINAFRICA) OceanDocs
Supported by IOC/IODE
Tipo: Conference Material Palavras-chave: Oceans; Oceans; Http://aims.fao.org/aos/agrovoc/c_12890.
Ano: 2005 URL: http://hdl.handle.net/1834/2710
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A Guide to Oceans, Coasts, and Islands at the World Summit on Sustainable Development. OceanDocs
Vandeweerd, V.; Bernal, P.; Belfiore, S.; Goldstein, K.; Cicin-Sain, B..
Oceans, coasts, and islands are essential to global sustainable development. The oceans, comprising 72% of the earth’s surface, play an essential life-support function without which life on earth would not be possible. 50% of the world’s population lives in coastal areas, and 44 of the world’s nations are small island developing States (SIDS) which are especially dependent on the oceans. Human populations everywhere depend on the oceans for food, energy, transportation, tourism, and other uses. Oceans, coasts, and islands thus do not represent a special or sectoral interest and concern—they are essential to global well-being. Achieving sustainable development in oceans, coasts, and islands thus would go a long way towards achieving global sustainable...
Tipo: Working Paper Palavras-chave: Oceans; Sustainable development; Coasts; Islands.
Ano: 2002 URL: http://hdl.handle.net/1834/301
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Diagnostic écologique, usages et analyse des perceptions des acteurs : vers une gestion intégrée de la baie du Lévrier OceanDocs
Cheikhna Lemrabott, sidi Yahya.
Tipo: Theses and Dissertations Palavras-chave: Oceans; Ecological sciences; Comparative studies; Geological systems; Capture fisheries; Oceans; Ecological zones.
Ano: 2012 URL: http://hdl.handle.net/1834/4771
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Freshwater and its role in the Arctic Marine System: sources, disposition, storage, export, and physical and biogeochemical consequences in the Arctic and global oceans ArchiMer
Carmack, E. C.; Yamamoto-kawai, M.; Haine, T. W. N.; Bacon, S.; Bluhm, B. A.; Lique, Camille; Melling, H.; Polyakov, I. V.; Straneo, F.; Timmermans, M. -l.; Williams, W. J..
The Arctic Ocean is a fundamental node in the global hydrological cycle and the ocean's thermohaline circulation. We here assess the system's key functions and processes: 1) the delivery of fresh and low salinity waters to the Arctic Ocean by river inflow, net precipitation, distillation during the freeze/thaw cycle and Pacific Ocean inflows; 2) the disposition (e.g. sources, pathways and storage) of freshwater components within the Arctic Ocean; and 3) the release and export of freshwater components into the bordering convective domains of the North Atlantic. We then examine physical, chemical or biological processes which are influenced or constrained by the local quantities and geochemical qualities of fresh water; these include: stratification and...
Tipo: Text Palavras-chave: Arctic; Oceans; Circulation; Freshwater; Carbon cycle; Acidification.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00313/42460/41831.pdf
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Geophysical Model Function for the AMSR2 C-Band Wind Excess Emissivity at High Winds ArchiMer
Zabolotskikh, Elizaveta V.; Reul, Nicolas; Chapron, Bertrand.
Measurements of the Advanced Microwave Scanning Radiometer 2 (AMSR2) onboard GCOM-W1 satellite at 6.925 and 7.3 GHz and both linear polarizations over tropical cyclones (TCs) during 2012 – 2014 are used to derive a new geophysical function relating the brightness temperature to the sea surface wind speed (SWS) in extreme conditions. . Similar sensitivity to SWS at close C-band frequencies allowed to correct for the atmospheric contributions to the microwave radiance and estimate the brightness temperature (TB) at the surface under the TCs, combining theoretical modeling and measured TB analyses. Estimated oceanic TBs were regressed against the wind speeds from the Best Track Archive to derive the new geophysical model function (GMF) for the wind speed...
Tipo: Text Palavras-chave: Atmosphere; Geophysical measurements; Oceans; Passive microwave remote sensing; Tropical cyclones (TCs).
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00300/41094/40267.pdf
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Indian Ocean Safari OceanDocs
Fuller, K.S..
For most activities, a relatively low level of exertion is required. While the ship will sometimes dock for a dry landing, you will need to climb into and out of Zodiacs for certain excursions ashore and for some snorkeling and most diving activities. Staff and crew will be on hand to assist. On shore excursions, you must be able to walk moderate distances in villages, towns, forests, and on beaches, occasionally over rough terrain. Opportunities will be available for leisurely strolls, as well as optional hikes requiring more exertion. Birders may participate in ornithological excursions. Our expedition staff and renowned lecture team of naturalists and historians will accompany you throughout shore and afloat. Average daily temperatures will be in the...
Tipo: Other Palavras-chave: Oceans.
Ano: 2005 URL: http://hdl.handle.net/1834/641
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IOC Consultative Group on Ocean Mapping OceanDocs
Tipo: Report Palavras-chave: Oceans.
Ano: 1999 URL: http://hdl.handle.net/1834/879
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Mineral Resources Of The Ocean presented at the national workshop on ODINAFRICA OceanDocs
Ajayi, T.R..
The seabed hosts a lot of mineral resources, sand and gravel, phosphorite, sulphur, coal oil and gas manganese nodules and sulphide nodules which had been exploited for a long time. However, much more had been known in the last twenty years when a reasonable but still incomplete inventory of these minerals and materials were made. These deep sea with vast potential resources are however in competition with the onshore supply. The future development of these minerals depends largely on international markets, need for strategic materials and cost of production compared to onshore deposits. This brief presentation is a summary of these resources and their current status. It must however be emphasized that with improved technology and the concern for the...
Tipo: Proceedings Paper Palavras-chave: Mineral resources; Oceans.
Ano: 2000 URL: http://hdl.handle.net/1834/272
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Radio-Frequency Interference Identification Over Oceans for C- and X-Band AMSR2 Channels ArchiMer
Zabolotskikh, Elizaveta; Mitnik, Leonid M.; Chapron, Bertrand.
A new method for radio-frequency interference (RFI) contamination identification over open oceans for the two C-subbands and X-band of Advanced Microwave Scanning Radiometer 2 (AMSR2) channel measurements is suggested. The method is based both on the AMSR2 brightness temperature (T-B) modeling and on the analysis of AMSR2 measurements over oceans. The joint analysis of T-B spectral differences allowed to identify the relations between them and the limits of their variability, which are ensured by the changes in the environmental conditions. It was found that the constraints, based on the ratio of spectral differences, are more regionally and seasonally independent than the spectral differences themselves. Although not all possible RFI combinations are...
Tipo: Text Palavras-chave: Atmosphere; Geophysical measurement techniques; Oceans; Passive microwave remote sensing; Radio-frequency interference (RFI).
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00273/38411/41989.pdf
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Rapport de l'atelier, la mariculture en Mauritanie : une nouvelle opportunité d'avenir. IMROP, Nouadhibou, 13 au 15 Novembre 2011 OceanDocs
Tipo: Report Palavras-chave: Oceans; Aquaculture development; Mariculture; Mariculture.
Ano: 2011 URL: http://hdl.handle.net/1834/4754
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Statistical Descriptors of Ocean Regimes From the Geometric Regularity of SST Observations ArchiMer
Ba, Sileye O.; Autret, Emmanuelle; Chapron, Bertrand; Fablet, Ronan.
In this letter, we evaluate to which extent the activity of ocean fronts can be retrieved from the geometric regularity of ocean tracer observations. Applied to sea surface temperature (SST), we propose a method for the characterization of this geometric regularity from curvature-based statistics along temperature level lines in front regions. To assess the effectiveness of the proposed descriptors, we used six years (from 2003 to 2008) of daily SST observations of the regions of Agulhas in the South of Africa and of Malvinas off the southern Brazilian coast. These experiments stress the relevance of geometric regularity features of tracer observation at ocean surface to characterize seasonal variations in ocean regimes.
Tipo: Text Palavras-chave: Geosciences and remote sensing; Image analysis; Image classification; Image processing; Oceans; Ocean temperature; Sea surface.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00109/21993/20230.pdf
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The EGIM, a generic instrumental module to equip EMSO observatories ArchiMer
Lanteri, Nadine; Legrand, Julien; Moreau, Bertrand; Lagadec, Jean-romain; Rolin, Jean-francois.
The EGIM aims to set up a number of ocean locations where the same set of core variables, including temperature, conductivity, pressure, dissolved O2, turbidity, ocean currents, and passive acoustics, are measured homogeneously: using identical hardware, the same sensor references, the same qualification methods, the same calibration methods, the same data format and access, and the same maintenance procedures. The EGIM provides all the services required to ensure the best measurement quality and long-term reliability in line with the Best Practices Handbook by FIXO3 and ESONET-EMSO Label, these services being sensor power distribution, time stamping, data storage and backup, protection against the environment and against fouling and bi-directional...
Tipo: Text Palavras-chave: Europe; Instruments; Calibration; Metrology; Sea measurements; Oceans; Observatories.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00427/53881/54949.pdf
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The marine barite saturation state of the world's oceans OMA
Monnin, C.; Jeandel, C.; Cattaldo, T.; Dehairs, F.A..
This paper addresses the question of the eventual control of barium concentration in seawater by an equilibrium with barite. For this, we have used a new thermodynamic model to compute the barite saturation index of ocean waters, mainly from GEOSECS data. Our results show that equilibrium between barite and seawater is reached in a number of places: cold surface waters of the Southern Ocean, waters at intermediate depths (2000-3500 m) in the Pacific, deep waters (2000-3500 m) of the Gulf of Bengal. The only samples for which a slight barite supersaturation is found are the surface waters at GEOSECS station G89 in the Weddell Gyre. Besides these locations, the rest of the world's oceans is undersaturated, as was established by Church and Wolgemuth [Church,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aqueous solutions; Oceanography; Oceans; Saturation; Thermodynamics.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=10260
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Toward a Multidimensional Marine Cadastre in Support of Good Ocean Governance OceanDocs
Ng'ang'a, S.; Nichols, S.; Sutherland, M.; Cockburn, S..
The importance of the marine environment to human existence makes it imperative that information models represent the multidimensional nature of reality as closely as possible in order to facilitate good governance. Information for a jurisdiction, on the effects of its formal law and community interests on the marine environment (e.g. nature and spatial extents and the rights, responsibilities, and restrictions etc.) would be stored in a marine cadastre. Other information on the physical, biological, socio-cultural and economic nature of the environment may be linked to the cadastre to give it a multipurpose function. This paper has the following objectives: 1. To highlight new spatial information technologies that facilitate the retrieval of various...
Tipo: Conference Material Palavras-chave: Marine cadastre; Ocean mapping; Marine parcel; Marine Governance; Sustainable development; Oceans.
Ano: 2001 URL: http://hdl.handle.net/1834/836
Registros recuperados: 14
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