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RADAKOVITCH, Olivier / Charmasson, S / Arnaud, M / Bouisset, P - 1999Pb-210, Cs-137 and Cs-134 profiles were determined on 13 box-cores from the Rhone submarine delta (north-western Mediterranean Sea). Maximum accumulation rates were estimated using the Pb-210 dating method or the evolution of the Cs-137/Cs-134 activity ratio with depth in the sediment. Rates ranged...Contributeur (s):
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De Madron, Xd / RADAKOVITCH, Olivier / Heussner, S / Loye-Pilot, Md / Monaco, A - 1999Climatological, current and particulate flux data were gathered in the Grand-Rhone canyon on the Gulf of Lions continental margin for one year (Jan. 1988-Jan 1989). Time series were analyzed to determine the influence of physical exchange processes on particulate matter at the shelf-edge, with a...Contributeur (s):
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RADAKOVITCH, Olivier / Cherry, Rd / Heussner, S - 1999Pb-210 and Po-210 were measured in particulate matter collected by five sediment traps deployed in the Grand-Rhone canyon (Gulf of Lion, Mediterranean Sea) and on its adjacent open slope. The experiment, part of the JGOFS-France ECOMARGE program, lasted one year, from January 1988 to January 1989....Contributeur (s):
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RADAKOVITCH, Olivier / Heussner, S - 1999As part of the ECOFER experiment (ECOMARGE program, JGOFS-France), concentrations of the natural radionuclide Pb-210 were measured in particulate matter collected by sediment traps deployed for a 14-month period (June 1990-August 1991) on two mooring lines within the Cap-Ferret Canyon, on the...Contributeur (s):
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Legesse, D / Gasse, F. / RADAKOVITCH, Olivier / VALLET-COULOMB, Christine / Bonnefille, Raymonde / Verschuren, D / Gibert, E / Barker, P - 2002Lake Abiyata is a small, closed, saline-alkaline lake located in the central part of the Ethiopian Rift Valley, East Africa. A multi-proxy study of a sediment core, 116 cm long and with undisturbed mud-water interface, was performed to test the sensitivity of the lake system and of different...Contributeur (s):
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RADAKOVITCH, Olivier / Sanchez-Cabeza, Ja / Abassi, A / Masque, P / Heussner, S - 2003Pb-210 was analysed in samples collected from (16) sediment traps, deployed during I year on the Northwestern Mediterranean continental margins, within the framework of the (MTP 1)-EUROMARGE-NB programme. The traps were moored within (5) submarine canyons and their adjacent open slope,...Contributeur (s):
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RADAKOVITCH, Olivier / Frignani, M / Giuliani, S / Montanari, R - 2003Water-particle interactions, particle behaviour and short-time scale variability were assessed at a coastal station adjacent to the Emilia Romagna Region (Adriatic Sea) using dissolved and particulate Th-234 analyses. The water column was sampled six times between March and September 1997....Contributeur (s):
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Miralles, J / RADAKOVITCH, Olivier / Cochran, Jk / VERON, Alain / Masque, P - 2004Contaminants are supplied to the coastal zone by the atmosphere, rivers and point sources like wastewaters or industrial area. Wetlands retain many of these contaminants and can be used to reconstruct sources and magnitudes of contaminant inputs. Radionuclides ( Cs-137, Pb-210, Pu-239 and Pu-240)...Contributeur (s):
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Miralles, J / RADAKOVITCH, Olivier / Aloisi, Jc - 2005A total of 83 cores were collected in the Gulf of Lions continental margins and analysed for Pb-210(xs) (excess Pb-210) in order to understand sedimentation patterns. Apparent sedimentation rates (ASR) range from 0.65 cm year(-1) in the vicinity of the Rhone River mouth to 0.01 cm year(-1) in the...Contributeur (s):
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Elbaz-Poulichet, F / Seidel, Jl / Jezequel, D / Metzger, E / Prevot, F / Simonucci, C / Sarazin, G / Viollier, E / Etcheber, H / Jouanneau, Jm / Weber, O / RADAKOVITCH, Olivier - 2005In order to further document the relation between redox conditions and the sedimentary record of Mn, U and Mo in a transitory anoxic water basin, their distribution has been studied along two profiles in the Thau lagoon (France). Sediments and pore-water have been sampled at two contrasting sites...Contributeur (s):
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Miralles, J. / VERON, Alain / RADAKOVITCH, Olivier / Deschamps, Pierre / Tremblay, T. / HAMELIN, Bruno - 2006Six marine sediment cores from the Gulf of Lions continental slope (700-1700 in water depth) were analyzed for stable lead isotopes and Pb-210 geochronology in order to reconstruct lead atmospheric fallout pattern during the last century. The detrital lead contribution is 25 mu g g(-1) and the mean...Contributeur (s):
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Garcia-Garcia, A. / Orange, D. / Lorenson, T. / RADAKOVITCH, Olivier / Tesi, T. / Miserocchi, S. / Berne, S. / Friend, P. L. / Nittrouer, C. / Normand, A. - 2006Sediment cores acquired in 2004 off the Rhone prodelta show consistent anomalous methane concentrations of up to 87,440 ppm. Methane compositional and isotopic data support a biogenic origin, although there are a few sites that show strongly depleted delta(13)C values (-53%o PDB) suggesting a mixed...Contributeur (s):
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Miralles, J. / Arnaud, M. / RADAKOVITCH, Olivier / Marion, C. / Cagnat, X. - 2006The extreme Rhone River flood that peaked in early December 2003 with water discharges as high as 11,500 m(3) s(-1), induced major damage in southern France and transferred large amounts of radionuclides that were associated with suspended particulate matter such as (7)Be, (137)Cs and (210)Pb....Contributeur (s):
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Giuliani, S. / RADAKOVITCH, Olivier / Frignani, M. / Bellucci, L. G. - 2007Th-234/(238) U disequilibrium was studied in the water column during three cruises (March-April 1997) carried out in the framework of the HFF experiment in the Gulf of Lions. The purposes were to investigate short temporal (15-20 days) and spatial (20-50 Km) variations in the water column and to...Contributeur (s):
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Submarine groundwater discharge (SGD) is now recognized as an important pathway for water and chemical species fluxes to the coastal ocean. In order to determinate SGD to the Gulf of Lion (France), we measured the activities of Ra-226 and Ra-228 by thermal ionization mass spectrometry (TIMS) in...Contributeur (s):