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Glacial pothole in Bloomington on the St. Croix River at Interstate State Park, Wisconsin, U.S.. A giant's kettle, also known as either a giant's cauldron, moulin pothole, or glacial pothole, is a typically large and cylindrical pothole drilled in solid rock underlying a glacier either by water descending down a deep moulin or by gravel rotating in the bed of subglacial meltwater stream. [1]
Water from a moulin often exits the glacier at base level, sometimes into the sea, and occasionally the lower end of a moulin may be exposed in the face of a glacier or at the edge of a stagnant block of ice. Water from moulins may help lubricate the base of the glacier, affecting glacial motion.
The peak is a feature of Glacier National Park in the state of Montana in the United States. [3] The summit of the peak, the hydrological apex of the North American continent, is the point where two of the principal continental divides in North America converge, the Continental Divide of the Americas and the Northern or Laurentian Divide .
Glacier Water Purchases Aqua Fill VISTA, Calif.--(BUSINESS WIRE)-- Glacier Water Services, Inc. (Pink Sheets:GWSV) announced today that it has consummated the previously disclosed acquisition of ...
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The water pressure and friction experienced at the base of a glacier depends in part on whether the subglacial hydrological system is channelized or distributed. [5] Channelized systems are an efficient form of drainage as they are able to rapidly move water out of the glacier, reducing water pressure in the system. [5]
The first ice drilling project to try this approach was an American Geographical Society expedition to the Taku Glacier in 1950. Fresh water, drawn from the glacier, was used as the drilling fluid, and three holes were drilled, to a maximum depth of 89 m. Cores were retrieved, but in poor condition. [97]
A glacier stream is a channelized area that is formed by a glacier in which liquid water accumulates and flows. [1] Glacial streams are also commonly referred to as "glacier stream" or/and "glacial meltwater stream". The movement of the water is influenced and directed by gravity and the melting of ice. [1]
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