CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Clarke, G.C.K.
Date : 1969.
Title : Geophysical measurements on the Kaskawulsh and Hubbard glaciers
Publication : Icefield Ranges Research Project, Scientific Results. Edited by: V. C. Bushnell and R. H. Ragle, New York, NY, United States: American Geographical Society-Arctic Institute of North America
Issue : 1:
Page(s) : 89-106.
Abstract
Gravity and seismic measurements were used to determine ice thickness in the divide region of Kaskawulsh and Hubbard Glaciers. For a 107-station network, Bouguer anomalies ranged from -199.8 to -162.9 mgal. Ice thickness calculations were made assuming the glacier was an infinite slab. Seismic refraction lines gave a firn thickness of about 40 m and an average P-wave velocity of 3710 + or - 20 m/sec. Maximum ice thicknesses and surface flow rates were 778 m and 150 m/yr on Kaskawulsh and 539 m and 132 m/yr on Hubbard. A close relation was found between geophysically-determined ice thicknesses and surface flow measurements. Flow and valley center lines were roughly coincident; flow was complicated by tributary glaciers. Topographic and flow divides were the same but no corresponding bedrock divide was found
Bibliography of Canadian Geomorphology