Showing posts with label volcano. Show all posts
Showing posts with label volcano. Show all posts

Monday, 23 May 2011

Geography: Iceland - volcano's

Read the full article here:  Ref: http://news.bbc.co.uk/1/hi/world/europe/8623239.stm 

 

EXTRACT:

 

Iceland is a volcanic hot spot on the Mid-Atlantic Ridge - the dividing line between the Eurasian and North American continental plates.

The country's three major volcanoes - Hekla, Katla and Grimsvotn - lie along this boundary.
Altogether there are 35 active volcanoes on and around the island.

Icelandic volcanoes have long drawn tourists from across the globe, eager to catch a glimpse of a pillar of smoke or a spectacular lava flow. But there have also been cataclysmic events.

Eruptions at the eastern volcanoes of Grimsvotn and from 1783 to 1785 Laki produced a lava flow which consumed vast swathes of land, blotted out the sun and killed a quarter of the population through poisoning or famine.

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SELECTED BIG ERUPTIONS
1783-85: Grimsvotn-Laki - lava inundated 300 sq km, sulphur dioxide and hydrogen fluoride emitted killed 9,000 people
1918: Katla eruption
1947-48: Hekla - 11-month eruption, major lava flow, 24,000 tonnes of carbon dioxide emitted
1973: Eldfell - seven-month eruption on island of Heimaey
1996: Grimsvotn erupts, causing a glacial burst (where a build-up of water under the ice of a glacier is suddenly released)
2004: Grimsvotn - eruption sends ash up to 12km into the air, some of it landing in Norway, Sweden and Finland
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Some useful info:
 
Eyjafjallajokull means "island mountain glacier"
Eyja means "islands"
Fjall means "mountain"
Jokull means "glacier"
-It's the mountain with the glacier seen from, or around, the Westman islands, off Iceland's south-western coast
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Tuesday, 2 November 2010

GEOGRAPHY: Volcanic craters

Today we read about a volcano that is thought to be about to erupt in Iceland.  Read about it here

I decided that I wanted to learn about volcanic craters and there are some awesome photos.

Then we looked at atolls.  If you have google earth you can search for atolls on there and its really awesome.  Try looking at Rakahanga Atoll, Cook Islands.

Click on the links for the websites we looked at and the photos.


Photo source:  http://www.global-travel.co.uk/tour9.htm