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A jökulhlaup is thus a sub-glacial outburst flood. Jökulhlaup is an Icelandic term that has been adopted into the English language, originally referring only to glacial outburst floods from Vatnajökull, which are triggered by volcanic eruptions, but now is accepted to describe any abrupt and large release of sub-glacial water.
East Africa was significantly affected by five centuries of general drought. In West Asia , especially Mesopotamia , the 8.2-kiloyear event was a 300-year aridification and cooling episode which may have provided the natural force for Mesopotamian irrigation agriculture and surplus production, which were essential for the earliest formation of ...
Giant current ripples are an important feature of the Channeled Scablands in Washington state, U.S., which formed during the Last Glacial Maximum as a result of at least 39 glacial lake bursts, called the Missoula floods, which originated from glacial lakes Columbia in Washington and Missoula in Montana. [10] [11] [12] [13]
As glaciers melt and pour massive amounts of water into nearby lakes, 15 million people across the globe live under the threat of a sudden and deadly outburst flood, a new study finds. More than ...
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Held in place by a terminal moraine, Imja Tsho threatens downstream communities with the potential for a glacial outburst flood. [2] Imja Tsho has been identified as one of the potentially dangerous lakes in Himalaya. It is located at 27° 53' 55" N latitude, 86° 55' 20" E longitude and an altitude of 5010 m in the Everest region of Nepal.
The drainage of supraglacial lakes on mountain glaciers can disrupt the internal plumbing structure of the glacier. Natural events such as landslides or the slow melting of a frozen moraine can incite drainage of a supraglacial lake, creating a glacial lake outburst flood. In such a flood, the lake water releases rushes down a valley.
Africa, specifically East Africa, has contained glacial regions, possibly as far back as the last glacial maximum 10,000 to 15,000 years ago. Seasonal snow does exist on the highest peaks of East Africa as well as in the Drakensberg Range of South Africa, the Stormberg Mountains, and the Atlas Mountains in Morocco.