Physics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mpse.conf..155s&link_type=abstract
International Conference on Mars Polar Science and Exploration, p. 155
Physics
1
Floods, Glaciers, Models, Water, Volcanology, Sediments
Scientific paper
In the beginning of October 1996 a volcanic eruption within Vatnajoekull ice cap melted approximately three cubic kilometers of glacier ice. The melt water got trapped in a subglacial reservoir in the Grimsvoetn caldera with water table at about 1500 m above sea level (asl). At about 9:30 pm on 4 November 1996 the ice barrier of the reservoir failed. At 7:20 am on 5 November a joekulhlaup broke explosively out 50 km down-glacier at eastern corner of the terminus of Skeioardrjoekull outlet glacier. This indicates a speed of about 5 km/h along the glacier bed. During the day the flood broke out successively farther to the west along the terminus which is at about 100 m asl. At 15:40 pm flood liquid issued from almost the entire 20 km length of the terminus. The flood wave traveled 20-25 km to the coast at the speed of 8-10 km/h. Additional information is contained in the original extended abstract.
Jonsson Patrik
Kaldal I.
Pálsson S.
Sigurosson O.
Snorrason Á.
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