Title Recent volume and area changes of Kaskawulsh Glacier, Yukon, Canada
Author Foy, N.; Copland, L.; Zdanowicz, C.; Demuth, M.; Hopkinson, C.
Author Affil Foy, N., University of Ottawa, Department of Geography, Ottawa, ON, Canada. Other: Natural Resources Canada, Canada; Centre of Geographic Sciences, Canada
Source Journal of Glaciology, 57(203), p.515- 525, . Publisher: International Glaciological Society, Cambridge, United Kingdom. ISSN: 0022-1430
Publication Date 2011
Notes In English. 32 refs. GeoRef Acc. No: 310264
Index Terms glacial geology; glaciers; mass balance; photogeology; spaceborne photography; remote sensing; Canada--Yukon Territory--Kaskawulsh Glacier; North America-- Saint Elias Mountains; Canada; digital terrain models; elevation; Kaskawulsh Glacier; North America; quantitative analysis; Saint Elias Mountains; satellite methods; Western Canada; Yukon Territory
Abstract Recent surface elevation changes of Kaskawulsh Glacier, Yukon, Canada, are quantified by comparing an air-photo derived DEM from 1977 and airborne lidar measurements from 1995, 2000 and 2007. Surface-area changes are assessed using historical aerial photography from 1956 and satellite imagery from 1977 to 2007. Combined, these measurements provide some of the first detailed records of volume change of a large Yukon glacier. Between 1977 and 2007, Kaskawulsh Glacier underwent a decrease in area of 1.53% and a decrease in volume of 3.27-5.94 km3 w.e.). The terminus also retreated by 655 m over the period 1956-2007. There was relatively minor volume change over the period 1977-95, while over the periods 1995-2000 and 2000-07 volume losses occurred at a relatively constant rate of -0.51 and - 0.50 km3 a-1 w.e., respectively. Since 1995, thinning has been prominent throughout the ablation zone, while relative stability and even slight thickening has occurred in the accumulation zone. These findings are similar to those recently observed at other nearby Alaskan glaciers.
URL http://hdl.handle.net/10.3189/002214311796905596
Publication Type journal article
Record ID 65007296