Artwork of a flood caused by glacial dam collapse

Artwork of a flood caused by glacial dam collapse

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Credit: LYNETTE COOK/SCIENCE PHOTO LIBRARY

Caption: Missoula flood. Artwork of one of the Missoula floods, the largest floods in Earth's history, which occurred at the end of the last Ice Age (13- 15,500 years ago). The floods occurred due to the collapse of glaciers which had dammed a river to form a lake. The dam probably collapsed because water melted a tunnel through its base; an event known as a jokulhlaup. It is thought that there were about 100 Missoula floods, the largest relea- sing about 20 million cubic metres of water per second over several days or more. The erosion caused by these floods created canyons, potholes, and gravel bars which are still visible today in the Scablands in the northwestern United States.

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Keywords: artwork, climate, collapse, dam, end, flood, flooding, glacial, glacier, ice age, jokulhlaup, meteorology, missoula, missoula flood, weather

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