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	Provedor de dados ArchiMer (3) Autor Krishnaswami, S (1) Rengarajan, R (1) Sardessai, S (1) Sarin, Mm (1) Vic, Clement (1) Wahidullah, S (1) Mais... Palavra-chave Arabian Sea (3) Mer d'Arabie (3) Acide humique (1) CP/MAS 13C RMN (1) CP/MAS C-13 NMR (1) Caractéristique structurale (1) Denitrification (1) Dynamique de mésoéchelle et sous-mésoéchelle (1) Dénitrification (1) Eddy-topography interactions (1) Golfe Persique (1) Golfe d'Oman (1) Great Whirl (1) Gulf of Oman (1) Humic acids (1) Interactions tourbillon-topographie (1) Mesoscale and submesoscale dynamics (1) Modélisation réaliste (1) Niveaux faiblement oxygénés (1) Ocean modelling (1) Mais... Tipo do documento Text (3) Ano 2015 (1) 2003 (1) 1998 (1) País France (3) Idioma Inglês (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Structural characteristics of marine sedimentary humic acids by CP/MAS C-13 NMR spectroscopy ArchiMer Sardessai, S; Wahidullah, S. Humic acids from sediments of different depositional environments have been studied by solid-state C-13 NMR and the results compared with the traditional wet chemical analysis. Results obtained are well in agreement with the previous literature reports that the carboxyl content measured by NMR correlated better with the total acidity, as well as with the carboxyl content obtained by wet chemical analysis after correction for amino acid carboxyl is made (following hydrolysis of peptide bonds). There is a large discrepancy between the NMR and wet chemical measurements of phenolics. NMR spectra was also indicative of branched paraffinic structures in the humic acids from the Arabian Sea; the humic acids of sediments from estuarine and coastal areas of the Bay... Tipo: Text Palavras-chave: Acide humique; Caractéristique structurale; CP/MAS 13C RMN; Mer d'Arabie; Sédiment superficial; Humic acids; Structural characteristics; CP/MAS C-13 NMR; Arabian Sea; Surficial sediment. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43657/43217.pdf Dynamique de bord ouest en mer d'Arabie ArchiMer Vic, Clement. This PhD aims to investigate some western boundary processes in the Arabian Sea : (i) the life cycle of the socalled Great Whirl, a persistent mesoscale eddy; (ii) the dynamics of the Persian Gulf outflow, a marginal sea dense outflow; and (iii) the seasonal Oman upwelling, a coastal upwelling forced by summermonsoonal winds. The cornerstone of all these phenomena is their locationat a western boundary, which makes then being influenced by both localforcing (e.g., monsoonal winds) and remote forcing (Rossby waves and wesward drifting eddies). Specifically, the later are expected to impact the western boundary dynamics since the low latitude of the Arabian Sea implies a fast westward propagation of long Rossby waves and eddies. Moreover, waves are... Tipo: Text Palavras-chave: Mer d'Arabie; Outfow; Golfe d'Oman; Golfe Persique; Ondes de Rossby; Upwelling; Dynamique de mésoéchelle et sous-mésoéchelle; Modélisation réaliste; Interactions tourbillon-topographie; Ocean modelling; Mesoscale and submesoscale dynamics; Arabian Sea; Great Whirl; Outflow; Gulf of Oman; Persian Gulf; Rossby waves; Eddy-topography interactions. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00498/60934/64328.pdf Uranium in the Arabian Sea: role of denitrification in controlling its distribution ArchiMer Rengarajan, R; Sarin, Mm; Krishnaswami, S. A total of 61 samples, from six vertical profiles between surface and 1800 m from the Arabian Sea, have been analysed for uranium concentration to assess its behaviour in oxic and sub-oxic waters. These samples cover a wide range of dissolved oxygen concentration, from 0.14 to 230 muM. Uranium concentration in most of the samples fall in the range of 3.2 +/- 0.2 mug l(-1). In general, uranium exhibits a conservative behaviour in the Arabian Sea water column and denitrification processes do not seem to influence its abundance. The mean uranium/salinity ratio in waters with dissolved oxygen <2 muM is (9.17 +/- 0.15) x 10(-8) g g(-1), nearly identical to the ratio (9.22 +/- 0.27) x 10(-8) g g(-1) in waters with dissolved oxygen >100 muM and in waters... Tipo: Text Palavras-chave: Mer d'Arabie; Uranium; Dénitrification; Niveaux faiblement oxygénés; Arabian Sea; Uranium; Denitrification; Sub-oxic layers. Ano: 2003 URL: http://archimer.ifremer.fr/doc/00321/43258/42989.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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