The Effect of Changing Sediment Supply on Sedimentation in a Glacier-Fed Lake

Abstract

Bow Lake, Alberta, Canada, is a deep, lake floor. Since 1955, however, the pond has thermally stratified alpine lake fed by an over- deprived the stream of much of its sediment land meltwater stream from Bow Glacier. The load, and inflows are now dispersed through glacier has been generally receding from its the lake mainly as rightward-deflected interNeoglacial maximum, and around 1955 a flows moving above the hypolimnion. The efpond began to form at the terminus. Prior to fect of the pond, therefore, has been to alter pond development, sedimentation in Bow the pattern of sedimentation in the lake as well Lake was dominated by underflows which as to reduce its overall rate of deposition. formed thick varves in the lower areas of the