CGRG Bibliography of Canadian Geomorphology
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Author : Carter, L.; Schafer, C.T.
Date : 1983
Title : Interaction of the Western Boundary Undercurrent with the continental margin off Newfoundland.
Publication : Sedimentology
Issue : 30(6):
Page(s) : 751-768
Abstract
Sedimentation on the Newfoundland rise is strongly influenced by the Western Boundary Undercurrent (WBU). The upper rise (2600-2800 m) is swept by a rapid (U super(-) = 8 multiplied by 5 cm sec super(-1)), south-flowing core of the WBU. The overlying nepheloid layer, when compared to adjacent waters, is thickest (800 m), most sediment laden (80 mu g l super(-1)), contains the highest proportion of terrigenous sediment and exhibits the best developed bottom mixed layer ( approximately equals 15 m thick). Comparisons with earlier data from the same area imply the dimensions and sediment load of the nepheloid layer vary with time. Empirical considerations, based on near-bottom current meter records from Labrador and Newfoundland, suggest the WBU is capable of transporting bedload with threshold friction velocities (u sub(*)) of around 0 multiplied by 87-1 multiplied by 14 cm sec super(-1) for between 1 and 15% of the time. The prevailing transport direction is southwards along the rise.
Bibliography of Canadian Geomorphology