Rio Cordon catchment has been instrumented to monitor major hydrologic, hydraulic and slope parameters. Bedload is measured at a special facility with an inclined grid on which particles larger than 20 mm slide into a storage area. Finer bedload is trapped in a settling area, while suspended sediment concentration is measured through samplers. On- slope sediment yield processes were investigated by surveying individual sources. Characteristics of stepped streambed morphology were also measured and analysed highlighting a relation between step spacing and bed slope and some similarities with the antidune wavelength. Eight flood hydrographs and sediment load patterns are presented obtaining advances on the critical discharge concept and on the correlation between the 'effective runoff' volume versus bedload transport volume.
Bedload, slope and channel processes in a high-altitude alpine torrent
D'AGOSTINO, VINCENZO;LENZI, MARIO ARISTIDE;
1998
Abstract
Rio Cordon catchment has been instrumented to monitor major hydrologic, hydraulic and slope parameters. Bedload is measured at a special facility with an inclined grid on which particles larger than 20 mm slide into a storage area. Finer bedload is trapped in a settling area, while suspended sediment concentration is measured through samplers. On- slope sediment yield processes were investigated by surveying individual sources. Characteristics of stepped streambed morphology were also measured and analysed highlighting a relation between step spacing and bed slope and some similarities with the antidune wavelength. Eight flood hydrographs and sediment load patterns are presented obtaining advances on the critical discharge concept and on the correlation between the 'effective runoff' volume versus bedload transport volume.Pubblicazioni consigliate
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