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jökulhlaup

jökulhlaup A sudden, violent, but short-lived increase in the discharge of a melt-water stream issuing from a glacier or ice cap, sometimes owing to volcanic activity beneath. A lake may develop above the heat source; this is subsequently breached to produce a torrent of melt-water (e.g. Lake Grimsvotn on Vatnajökull, Iceland). Flow velocity may reach 7–8 m/s and the discharge may attain 100 000 m3/s (e.g. the Katlahlaups from Myrdalsjökull, Iceland), comparable to rates of flow of the Amazon river.

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"jökulhlaup." A Dictionary of Ecology. . Encyclopedia.com. 21 Nov. 2017 <http://www.encyclopedia.com>.

"jökulhlaup." A Dictionary of Ecology. . Encyclopedia.com. (November 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jokulhlaup-0

"jökulhlaup." A Dictionary of Ecology. . Retrieved November 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jokulhlaup-0

jökulhlaup

jökulhlaup Sudden, violent, but shortlived increase in the discharge of a meltwater stream issuing from a glacier or ice-cap, sometimes due to volcanic activity beneath. A lake may develop above the heat source; this is subsequently breached to produce a torrent of meltwater, e.g. Lake Grimsvotn on Vatnajökull, Iceland. Flow velocity may reach 7–8 m/s and the discharge may attain 100 000 m3/s (e.g. the Katlahlaups from Myrdalsjökull, Iceland), comparable to rates of flow of the Amazon river.

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

  • MLA
  • Chicago
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"jökulhlaup." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Nov. 2017 <http://www.encyclopedia.com>.

"jökulhlaup." A Dictionary of Earth Sciences. . Encyclopedia.com. (November 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jokulhlaup

"jökulhlaup." A Dictionary of Earth Sciences. . Retrieved November 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jokulhlaup