CGRG Bibliography of Canadian Geomorphology
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Author : Burn, C.R.
Date : 1982
Title : Investigation of thermokarst development and climate change in central Yukon Territory
Publication : Unpublished M.A. thesis. Carleton University, Ottawa
Issue :
Page(s) : 142 pp
Abstract
Investigations of thermokarst development, ground ice conditions, and climatic change in the Stewart and Takhini River Valleys, Yukon Territory, are reported. Core drilling to 5 m revealed extensive ground ice in glacio-lacustrine clays in the Stewart valley. With air photographs, the development of two retrogressive flow slides is reconstructed, as is pond development. The last is also reconstructed by cross-dating of ring series from submerged trees. A numerical simulation of the effects of climate change and fore on ground thermal regime indicates that fire produces a greater change in surface temperature than a climate change of 2C. The features in the Stewart Valley are associated with the post-1850 warming, while the Takhini features have recently enlarged, following a forest fire.
Bibliography of Canadian Geomorphology