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Seasonal and interannual variations (1996-2000) of the coastal waters east of the Rhone river mouth as indicated by the SORCOM series ArchiMer
Younes, Wan; Bensoussan, N; Romano, Jc; Arlhac, D; Lafont, Maxime.
Between 1996 and 2000, 79 cruises have been achieved following always the same transect between Marseilles and the Rhone river's mouth. While cruising, salinity, temperature and fluorescence of surface waters (1.5 m) were recorded every minute, in association with precise GPS position. The whole set of data. (i.e. 128 measured points per cruise) constitutes the Sorcom series whose synthetic results ate presented here. Despite the high spatial and temporal. variability encountered between two successive cruises, the regularity and duration of the sampling strategy permitted to define coherent spatial zonation and temporal evolutions. In the Cape Couronne vicinity the dynamic of the eastern extension of the dilution plume clearly changes. Westward, waters...
Tipo: Text Palavras-chave: Rhône; Panache de dilution; Observation à long terme; Fluorescence; Salinité; Rhone river; Dilution plume; Long term observation; Fluorescence; Salinity.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00321/43260/42991.pdf
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Surface suspended matter off the Rhone river mouth from visible satellite imagery ArchiMer
Forget, P; Ouillon, S.
The quantification of surface Total Suspended Matter (TSM) off the Rhone river mouth is investigated using SPOT-XS and Landsat-TM images collected in November 1994. The method of satellite data calibration from in situ measurements is discussed. It is based on TSM concentration measurements through filtration of surface water samples and on radiometric data collected with a 256-channel spectroradiometer in the range 400-1100 nm. Empirical relationships between reflectance and TSM concentration are established by linear regression analysis of the data. These relationships are then applied to the image data corrected from atmospheric and surface effects. A good agreement, within a factor of less than two, was found on derived TSM concentration values as...
Tipo: Text Palavras-chave: Réflectance; Matière en suspension; Télédétection; Panache fluvial; Rhône; Reflectance; Suspended matter; Remote sensing; River plume; Rhone river.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43637/43228.pdf
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