CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Barrie, J.V.
Date : 1983
Title : Sedimentary processes and the preservation of iceberg scours on the eastern Canadian continental shelf
Publication : Seventh International Conference on Port and Ocean Engineering Under Arctic Conditions. - Espoo, Finland : Technical Research Centre of Finland, 1983
Issue : 4:
Page(s) : 635-653.
Abstract
Iceberg scours, the physical evidence of grounding icebergs, are observed over much of the eastern Canadian continental shelf. The degree of preservation or degradation of these scours (which can define scour age) depends on the type of sediments, their physical and geotechnical properties and the hydrodynamic regime that the sediments are exposed to. Evidence drawn from sediment textures, mineralogical analyses, submersible observations, acoustic geophysical surveys and from the hydrodynamic environment demonstrate that the rate of scour degradation is determined primarily by wave-induced oscillatory motion and to a lesser extent, by unidirectional currents at the seabed and the sediment available for deposition. Assuming that the hydrodynamic processes can be quantified, then scour frequencies and rates of scour degradation can be determined more accurately; these quantitative parameters are based on scour morphology as interpreted from theexisting scour data base. Three defined scoured environments are compared, including examples from the Davis Strait, the Labrador Shelf and the Grand Banks of Newfoundland.
Bibliography of Canadian Geomorphology