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The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.
The Weeping Wall is a set of cliffs, approximately 1000 feet high, located at the western base of Cirrus Mountain alongside Highway 93 (Icefields Parkway) in northern Banff National Park in Alberta, Canada, just south of the boundary with Jasper National Park.
The Columbia Icefield is the largest ice field in North America's Rocky Mountains. [1] Located within the Canadian Rocky Mountains astride the Continental Divide along the border of British Columbia and Alberta, Canada, the ice field lies partly in the northwestern tip of Banff National Park and partly in the southern end of Jasper National Park.
Unlike the Laurentide Ice Sheet, which may have taken as many as eleven thousand years to fully melt, [3] the Cordilleran ice sheet melted very quickly, probably in four thousand years or less. [4] This rapid melting caused floods such as the overflow of Lake Missoula and shaped the topography of the fertile Inland Empire of Eastern Washington. [5]
The Ellesmere Ice Shelf was the largest ice shelf in the Arctic, encompassing about 9,100 square kilometres (3,500 square miles) of the north coast of Ellesmere Island, Nunavut, Canada. [1] The ice shelf was first documented by the British Arctic Expedition of 1875–76, in which Lieutenant Pelham Aldrich 's party went from Cape Sheridan to ...
The Ellesmere ice shelf reduced by 90 percent in the twentieth century due to global warming, leaving the separate Alfred Ernest, Ayles, Milne, Ward Hunt, and Markham Ice Shelves. [10] A 1986 survey of Canadian ice shelves found that 48 km 2 (19 sq mi), involving 3.3 km 3 (0.79 cu mi) of ice, calved from the Milne and Ayles ice shelves between ...
Much of the Canadian Arctic is covered by ice and permafrost. [5] Canada has the longest coastline in the world, with a total length of 243,042 kilometres (151,019 mi); [ 6 ] additionally, its border with the United States is the world's longest land border, stretching 8,891 kilometres (5,525 mi). [ 7 ]
The mission of the CIS is to provide the most timely and accurate information possible about ice in Canada's navigable waters. In support of this, its two main objectives are to ensure the safety of Canadians, their property and their environment by warning them of hazardous ice conditions in navigable Canadian waters, and to provide present and future generations of Canadians with sufficient ...