CGRG Bibliography of Canadian Geomorphology
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Author : Cavin, A.; McKenzie, G.; and Thompson, L.
Date : 2001.
Title : Bona-Churchill ice core (2002): refining late Holocene history of Wrangell-St. Elias region.
Publication : Canadian Quaternary Association/ Association canadienne pour l'etude du Quaternaire, Annual Meeting 2001. Whitehorse, Yukon Territory, August 20 – 24, 2001.
Issue :
Page(s) :
Abstract
Surface temperatures in southeastern Alaska and parts of Canada rose as much as 2° C in the last 30 years, more than twice the global average of 0.6° C. Have rates of past warming been similar, or is this an unprecedented phenomenon? What is the relative importance of temperature and precipitation on glacial fluctuations here? These and other questions will be explored following ice core retrieval from the col between Mt. Bona and Mt. Churchill (61° 23’N, 141° 43’W; 4420 m asl), located in the Wrangell Mountains of southeastern Alaska, scheduled for Spring 2002. A study of the glacial geology, including mapping and dating of surrounding end moraines, will provide information on how the glaciers have responded to climate events recorded in the ice cores. This research will emphasize dating of the late glacial maximum and Younger-Dryas and Neoglacial events, particularly the "Little Ice Age" moraines. A review of recent paleoclimate research presented here, including results from dendrochronology, palynology, paleolimnology and other glacial studies, will establish a regional picture. The volcanic history, tree ring temperature reconstructions, and historical variability in southern Alaskan vegetation will be summarized. Bona-Churchill regional climate and environmental studies are necessary to gain further insight into this complex system.
Bibliography of Canadian Geomorphology