Information AboutKettlehole |
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A kettlehole (or '''kettle hole''') is a small, usually round depression formed as a result of Glacial Action . They are believed to form when a large piece of Ice breaks from the edge of a retreating glacier, and becomes partially buried under glacial Debris deposited by the glacier; after melting, this fragment leaves a small Depression in the landscape. When water occupies a kettlehole, it may be called a kettle pond or '''kettle lake''' or even a '''pothole lake'''. In contrast to most ponds and lakes, kettleholes often have no inflowing or outflowing Stream s. Pothole lakes dot the landscape of the Northern Hemisphere in the American and Canadian prairies, the Russian Steppe s, and throughout northern Siberia . Scientists use Satellite Image s of these glacial kettle lakes to measure water clarity and to make environmental assessments. These lakes are far from agricultural land and settled areas, so they have fairly clear and unpolluted waters. Scientists also monitor these lakes to study climate change. Researchers reported in '' Science '' that some glacial kettle lakes in northern Siberia have drained over the past 30 years as the region has warmed and the Permafrost beneath the lakes has "cracked," allowing lake water to drain out. EXAMPLES OF KETTLE LAKES
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