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Assuming a height of about 700-800 meters, water pressure at the bottom of the crevasses would have been about 60-80 atmospheres. Some authors assume that as it fell down the crevasses the water reached a speed in excess of 100 kilometres an hour. It should be noted, however, that this erosive phenomenon took place in a closed circuit fashion. The water, in other words, had no exit path at the bottom and was forced to come back up to the surface. Was it therefore its rotational movement that had such a high speed?
(Aldo Godenzi) |
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The Cavagliasco with its spectacular glacial «sculptures»
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