CGRG Bibliography of Canadian Geomorphology
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Author : Chikita, K.A.; Smith, N.D.; Yonemitsu, N.; and Perez-Arlucea, M.
Date : 1996
Title : Dynamics of sediment-laden underflows passing over a subaqueous sill: glacier-fed Peyto Lake, Alberta, Canada
Publication : Sedimentology
Issue : 43(5):
Page(s) : 865-976
Abstract
The dynamic behaviour of sediment-laden underflows was examined in Peyto Lake, Alberta, Canada, which contains a midlake sill 7 m high. Sediment-laden underflows are driven by the downslope component of negative buoyant gravity multiplied by the current's thickness. Our measurements of wind, lake currents and water properties indicate that underflows pass over the sill due to the active storage of turbid suspension near the bottom in the deepest proximal region. Sill overflows occurred only when a hydrological threshold of the inflowing river was exceeded, causing quasicontinuous underflow and associated sedimentation in the distal region of the lake basin.
Bibliography of Canadian Geomorphology