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| Lundhansen, Lc; Pejrup, M; Valeur, J; Jensen, A. |
| Gross sedimentation rates (GSR) were measured using sediment traps placed at different levels above die seabed (0.3, 0.5, 0.8, 1.0, 2.0, 4.0, 6.0, 8.0, 10.0 m) at a water depth of 17 m. The traps were deployed for 1.25 year. The study was carried out at a location in die semi-enclosed Aarhus Bay, in the southwestern part of the Kattegat, which forms the transitional zone between the highly saline (32-34) North Sea and the less saline (15-20) Baltic Sea. Hydrographic conditions in the Aarhus Bay are dominated by significant changes in salinity during the year, and the water column was stratified for 80 % of the time. High GSR values were recorded near the seabed with a mean of 114.8 (g m-2 day-1) at 0.3 m above the seabed, whereas low GSR values were... |
| Tipo: Text |
Palavras-chave: SEDIMENTATION RATES; SEDIMENT TRAPS; STRATIFICATION; WIND ENERGY; RESUSPENSION. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00099/21047/18673.pdf |
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| Crassous, Philippe; Khripounoff, Alexis. |
| Nine sediment traps were assembled in triplicate on a frame and deployed at 100 m above the bottom in the California abyssal plain (4 100 m depth) for ten days. The distances between traps were from 30 cm to 11 km. The main flux measured during this period was 167 mg m(-2) day(-1) with a minimum of 43 mg m(-2) d(-1) and a maximum of 283 mg m(-2) d(-1). This high variation of the particulate flux at the kilometric scale was also observed at a metric scale: for example, the particulate flux measured with one of triplicate traps was equal to 82.3 +/- 46.5 mg m(-2) d(-1) (more than 50 % of variation) between traps distant of less than 1 m. To explain this heterogeneity of the flux measurement, some hypotheses are developed in this study: sampling artefact,... |
| Tipo: Text |
Palavras-chave: SEDIMENT TRAPS; DEEP SEA; HORIZONTAL FLUX VARIATION. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20885/18499.pdf |
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| Fowler, Sw; Small, Lf; Larosa, J. |
| During a six-year (1978-1984) sediment trap study in the northwestern Mediterranean off the coast of Monaco, large variations in mass flux and carbon flux through 100 and 150 m were observed with maximum flux values occurring in late winter or early spring and minimum flux in late summer. Total particulate carbon flux was linearly related to mass flux. During March through October total particulate carbon flux represented, on average, approximately 7 % of the mass flux, whereas from November through February it averaged about 4.7 %. From recent organic carbon content data collected in the same region, it was estimated that approximately 5 % of the total mass flux through 100 and 150 m in calm seas was organic carbon (calm seas were prevalent during March... |
| Tipo: Text |
Palavras-chave: PARTICULATE CARBON FLUX; FECAL PELLETS; SEDIMENT TRAPS; SEASONAL PARTICLES FLUX. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00102/21281/18890.pdf |
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