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	Provedor de dados ArchiMer (2) Autor Abassi, A (1) Buscail, R (1) Charriere, B (1) Giresse, P (1) Masque, P (1) Mikkelsen, Oa (1) Sanchez-cabeza, Ja (1) Mais... Palavra-chave Vitesse de sédimentation (2) 210Pb (1) Aggregation (1) Agrégation (1) Carbone organique (1) Diffraction laser (1) Dimension fractale (1) Fractal dimension (1) Gravity-induced process (1) Laser diffraction (1) Méditerranée nord-occidentale (1) North-western Mediterranean (1) Organic carbon (1) Particle size spectra (1) Pb-210 (1) Processus gravitaires (1) Sedimentation rate (1) Settling velocity (1) Spectre de taille des particules (1) Mais... Tipo do documento Text (2) Ano 2002 (1) 2001 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Examples of spatial and temporal variations of some fine-grained suspended particle characteristics in two Danish coastal water bodies ArchiMer Mikkelsen, Oa. In June and September of 1999, a LISST-100 in situ laser diffraction particle sizer was used to analyse the temporal and spatial variation of the beam attenuation coefficient, the in situ median particle (aggregate) diameter and the median volume concentration of suspended matter in two Danish coastal water bodies. One of the study sites was generally exposed to wind, while the other was quite sheltered. Measurements of the mass concentration of total suspended matter and chl a were made simultaneously. The in situ median effective density, settling velocity and vertical flux of the suspended matter are computed. Results demonstrate that in September, the in situ median aggregate diameter, settling velocity and vertical flux was smaller (by a factor of up... Tipo: Text Palavras-chave: Agrégation; Diffraction laser; Spectre de taille des particules; Dimension fractale; Vitesse de sédimentation; Aggregation; Laser diffraction; Particle size spectra; Fractal dimension; Settling velocity. Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43328/42899.pdf Biotracers and geotracers of depositional events in NW Mediterranean margin over the past two centuries ArchiMer Giresse, P; Buscail, R; Charriere, B; Abassi, A; Masque, P; Sanchez-cabeza, Ja. A detailed sedimentological and geochemical investigation was performed on slope sediments collected from the Gulf of Lions and Catalonian margins and from the northern Balearic margin. The study was based on cores, about 50 cm long. Various physiographic sites (canyons, open slopes) were selected according to the available sediment accumulation rates obtained with the Pb-210 geochronological method. At a short time scale, various parts of the slope were characterized by muddy hemipelagic sediment. Sedimentological data suggested that deposition was continuous. Total organic carbon and its hydrolysable fraction decreased downcore. Significant increase of C/N ratio downcore resulted from an early diagenetic process in response to the burial effect. However... Tipo: Text Palavras-chave: Méditerranée nord-occidentale; Vitesse de sédimentation; Processus gravitaires; Carbone organique; 210Pb; North-western Mediterranean; Sedimentation rate; Gravity-induced process; Organic carbon; Pb-210. Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43335/42892.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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