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Islandský vulkán se probudil

08.11.2004
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Geologie
Islandský vulkán se probudil

Od pondělí chrlí kouř a popel vulkán Grímsvötn na Islandu. Níže uvádíme několik informací o něm.

Grímsvötn, Iceland

Location: 64.42N, 17.33W
Elevation: 5658 ft (1725 m)

Last Updated: 04 November 2004

Grímsvötn is a central volcano in the Grímsvötn volcanic system of Iceland. This system is about 62 miles (100 km) long and ~9 miles (15 km) wide. It is mostly covered with ice named Vatnajokull. The total volume of lava erupted from the Grimsvotn system is about 50-55 cubic km. Only about 19 cubic km of this lava is not covered by the ice. The system rises to the northeast from about 1000 ft (300 m) above sea level in the southwest. It reaches its tallest point at Grímsvötn volcano. This volcano has a 35 sq km caldera. A high temperature hydrothermal area is located in this caldera. Grímsvötn has erupted 45 times. The last major eruption of the volcano was in 1996.

Sources of Information:

Jakobsson, Sveinn Peter, "Petrology of Recent basalts of the Eastern Volcanic Zone, Iceland," Acta Naturalia Islandica 26, Reykjavik, 1979

More information: http://www.onlinecollegeclasses.com/volcanic-and-geological-resources.html

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