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| Kaskawulsh Glacier | |
|---|---|
| Name | Kaskawulsh Glacier |
| Location | Saint Elias Mountains, Yukon |
| Status | Retreating |
Kaskawulsh Glacier is a major valley glacier in the Saint Elias Mountains of the Yukon, within Kluane National Park and Reserve, terminating near the Kaskawulsh River headwaters. The glacier feeds significant icefields connected to the Kluane Icefield and has been the focus of international glaciological, hydrological, and climate research due to a rapid drainage reorganization event in 2016. It lies near the Alsek River watershed and within the broader transboundary landscape shared with British Columbia and Alaska.
Kaskawulsh Glacier sits on the northeastern flank of the Saint Elias Mountains adjacent to the Kluane Icefield, bounded by peaks such as Mount Logan, Mount Saint Elias, Mount Fairweather, Mount Steele, and Mount Hubbard. The glacier complex includes multiple tributaries flowing from ridges near Kaskawulsh Peak toward lowland valleys draining into the Alsek River and the Yukon River systems, located within Kluane National Park and Reserve, Wrangell–St. Elias National Park and Preserve, and the Glacier Bay National Park and Preserve region. Surrounding administrative regions include the Yukon, British Columbia, and the State of Alaska.
The glacier is part of the Kluane Icefield system, exhibiting features studied in glaciology such as crevasse fields, icefalls, medial moraines, and surge-like flow variability comparable to documented surging in glaciers like Variegated Glacier and Hubbard Glacier. Researchers from institutions such as the University of British Columbia, University of Ottawa, Smithsonian Institution, National Aeronautics and Space Administration, Natural Resources Canada, Yukon Research Centre, Environment and Climate Change Canada, and the United States Geological Survey have applied methods including remote sensing, satellite imagery, radar interferometry, GPS geodesy, and ground-penetrating radar to quantify mass balance, ice velocity, and thickness. Comparative studies reference ice dynamics in regions monitored by World Glacier Monitoring Service, International Glaciological Society, PAGES (Past Global Changes), and Intergovernmental Panel on Climate Change assessments.
A major hydrological shift occurred in 2016 when meltwater flow from the glacier that historically drained toward the Bering Sea via the Yukon River and the Pacific Ocean shifted to drain toward the Gulf of Alaska via the Alsek River and Lituya Bay, prompting analysis by hydrologists from University of Alaska Fairbanks, McGill University, University of Calgary, and Simon Fraser University. The event was framed in comparison to historic drainage captures documented in the Missoula Floods literature and analogous to post-glacial reorganizations studied in the Fraser River and Columbia River basins. Federal agencies including Parks Canada and the U.S. National Park Service engaged in monitoring impacts on streamflow, sediment transport, and downstream ecosystems. The shift influenced management considerations for Whitehorse water resources and downstream communities such as Haines, Skagway, and Yakutat.
The glacier’s retreat and thinning are consistent with regional warming trends documented by NOAA, Environment and Climate Change Canada, and European Space Agency satellite records, and are discussed in literature alongside climate-driven glacier changes in the Canadian Rockies, Alaska Range, and Patagonia Icefields. Studies published by researchers affiliated with University of Colorado Boulder, Columbia University, Princeton University, and Harvard University have linked decreasing mass balance to increasing summer temperatures and altered precipitation patterns associated with Arctic amplification, shifts in the North Pacific Oscillation, and changes to the Aleutian Low. Impacts modeled by climate groups such as Met Office Hadley Centre and NASA Goddard Institute for Space Studies project continued retreat with implications for sea-level contribution, freshwater fluxes to the North Pacific Ocean, and regional hydrology.
Indigenous presence in the region involves Kaska Dena and other First Nations groups with traditional use of valleys near the glacier, interacting historically with traders from the Hudson's Bay Company and explorers such as members of the Klondike Gold Rush era who traversed nearby terrain. Scientific exploration has included expeditions by teams from the Royal Canadian Geographical Society, field campaigns supported by Natural Resources Canada, and collaborations with universities including McMaster University and University of Toronto. Management involves Parks Canada and cooperation with territorial governments in the Yukon, reflecting policies influenced by instruments such as the Canada National Parks Act.
The glacier sits amid alpine and subalpine ecosystems hosting species monitored by conservation organizations like World Wildlife Fund, Nature Conservancy of Canada, and regional stewardship groups. Vegetation zones adjacent to the glacier include communities dominated by species recorded in studies by Canadian Wildlife Service and Fisheries and Oceans Canada, while fauna include populations of Dall sheep, grizzly bear, black bear, moose, caribou, mountain goat, and avian species cataloged by Bird Studies Canada and Royal Ontario Museum surveys. Aquatic habitats affected by meltwater shifts involve fisheries of interest to Department of Fisheries and Oceans and local indigenous fisheries stewardship programs.
Ongoing monitoring involves satellite missions and agencies such as Landsat, Sentinel-1, ICESat-2, TerraSAR-X, the National Aeronautics and Space Administration, Canadian Space Agency, European Space Agency, and ground teams from academic institutions including University of Oslo and ETH Zurich. Data assimilation and modeling efforts employ frameworks used by Global Cryosphere Watch, World Glacier Monitoring Service, IPCC, and modeling centers like NCAR and GFDL. Collaborative projects include programs funded by research councils such as the Natural Sciences and Engineering Research Council of Canada and international science collaborations through organizations like IOC-UNESCO.
Category:Glaciers of Yukon