Jökulhlaup
(from the Icelandic). A sudden and often catastrophic outburst of water from a glacier during a volcanic eruption. The term is also used to describe when an ice-dammed lake bursts or an internal water pocket escapes, resulting in flooding.
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The high discharge evident in this stream along the front of Thompson Glacier, Axel Heiberg Island, Canadian Arctic, is the result of the sudden release of water from ice-dammed Between Lake. Photo M. J. Hambrey, 1975. |