CGRG Bibliography of Canadian Geomorphology
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Author : Gipp, M.R.
Date : 1993
Title : The orientation of buried iceberg scours and other linear phenomena
Publication : Marine Geology
Issue : 114(3-4):
Page(s) : 263-272
Abstract
The average orientations of surficial iceberg scours can be obtained from sidescan sonograms. Using certain assumptions, the average orientation of similar buried phenomena can be estimated from a pattern of intersecting seismic profiles. Two possible solutions are generated at each intersection of two seismic profiles, each of which is oriented at an angle, alpha sub(i), from the profile which encounters the fewer scours, where alpha sub(i) = tan super(-1 [sin Phi /( rho )dr plus or minus cos Phi )], and rho sub(r) is the ratio of the number of scours observed on the two seismic lines. Several pairs of solutions are required to determine which solution of each pair is significant. Iceberg scours observed on aerial photographs of the floor of glacial lake Agassiz demonstrate that the estimates provided by this technique correspond with the average orientation of the population. Applying this method to buried iceberg scours in Emerald Basin, Scotian Shelf, gives orientations which are parallel to paleo-bathymetric contours.
Bibliography of Canadian Geomorphology