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glacial breach

glacial breach A glacially eroded trough that cuts through a ridge and so breaches a former divide. It is formed when the outflow of a glacier (or ice sheet) is impeded, so that the thickness of the glacier consequently increases, and ultimately a higher escape route (the breach) is exploited. This process is called ‘glacial diffluence’ when a single glacier spills out of its valley, and ‘glacial transfluence’ when several breaches are formed, owing to the accumulation of a large ice sheet. The many breaches through the western Highlands of Scotland were caused by the accumulation of transfluent ice east of the main watershed.

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"glacial breach." A Dictionary of Ecology. . Encyclopedia.com. 19 Oct. 2017 <http://www.encyclopedia.com>.

"glacial breach." A Dictionary of Ecology. . Encyclopedia.com. (October 19, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/glacial-breach-0

"glacial breach." A Dictionary of Ecology. . Retrieved October 19, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/glacial-breach-0

glacial breach

glacial breach A glacially eroded trough that cuts through a ridge and so breaches a former watershed. It is formed when the outflow of a glacier (or ice sheet) is impeded, its thickness consequently increases, and ultimately a new escape route (the breach) is exploited. This process is called ‘glacial diffluence’ when a single glacier spills out of its valley, and ‘glacial transfluence’ when several breaches are formed due to the accumulation of a large ice sheet. The many breaches through the western Highlands of Scotland are due to the accumulation of transfluent ice east of the main watershed.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"glacial breach." A Dictionary of Earth Sciences. . Encyclopedia.com. 19 Oct. 2017 <http://www.encyclopedia.com>.

"glacial breach." A Dictionary of Earth Sciences. . Encyclopedia.com. (October 19, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/glacial-breach

"glacial breach." A Dictionary of Earth Sciences. . Retrieved October 19, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/glacial-breach