CGRG Bibliography of Canadian Geomorphology
Author : Smith, D.J.
Date : 1988
Title : Rates and controls of soil movement on a solifluction slope in the Mount Rae area, Canadian Rocky Mountains
Publication : Zeitschrift fur Geomorphologie N.F. Suppl.-Bd.
Issue : 71:
Page(s) : 25-44.
Solifluction processes were investigated on an alpine ridge-top summit in the southern Canadian Rocky Mountains to establish the rate and character of contemporary soil movements. Displacements were monitored at 132 points using plastic inclinometer tubes, wooden dowel pillars and painted stones. These measurements yielded 263 years of surface movement data and 24 years of volumetric movement data. Most of the activity was confined to the upper 30 cm of soil, where the rate of surface movement ranged from zero to 1.1 cm/year. The average rate of surface movement was 0.7 cm/year, with an approximate volumetric transport of 10.9 cm3/cm/year downslope. Frost heave bedstead measurements described seasonal heave magnitudes ranging from 3.4 to 3.5 cm/year which, when compared to the movement data, emphasized the large contribution made by frost creep. Seasonal thawing of the ground prompted sharp decreases of potential consistency as soil water contents rose sharply. These appeared to be correlated directly to the depth of soil movement and likely provide a process explanation for the observed temporal and spatial fluctuations in soil movement rates
Bibliography of Canadian Geomorphology