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Decades of Icelandic fireworks?
 

Volcanic activity appears to occur in a cycle
 

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16 Apr 10 - Volcanic activity on Iceland appears to follow a periodicity of around 50 to 80 years, says Thorvaldur Thordarson, an expert on Icelandic volcanoes at the University of Edinburgh, UK.

Judging by the increase in both volcanic and seismic activity over the past 10 years, Thordarson  thinks we might be entering a more active phase with more eruptions. He estimates that the active phase will last for 60 years or so. By contrast, the latter half of the 20th century was unusually quiet.

When Gudrún Larsen from the University of Iceland in Reykjavik and colleagues studied 800 years' worth of data from lava layers, ice cores and historical records, they found that Iceland's volcanism goes through cycles of high and low activity strongly linked to earthquake activity.

The Vatnajökull ice cap region experienced between 6 and 11 eruptions every 40 years during phases of high activity, compared with no more than three eruptions per 40 years during low-activity phases. Other regions of Iceland appear to follow a similar pattern to Vatnajökull.

After Iceland's Laki volcano erupted in 1783, crop production fell in western Europe. Some link that eruption, which helped fuel famine, to the French Revolution.
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See entire article, entitled "Get ready for decades of Icelandic fireworks"
http://www.sott.net/articles/show/206978-Get-ready-for-decades-of-Icelandic-fireworks
Thanks to Tim McHart for this link

 

Related articles:

Iceland volcano erupts again
 
Ten to 20 times more powerful than last month's eruption
 14 Apr 10 - Red hot magma melted a hole in the 650-foot thick ice above
 the volcano, and floodwaters gushed out of the glacier into lowland areas.
 See Iceland volcano erupts again

Extended deep freeze if Iceland volcano blows
25 Mar 10 - If Iceland's Katla volcano should erupt, it would likely
send the world, including the USA, into an extended deep freeze.
See Extended deep freeze if Iceland volcano blows

Iceland volcano could have global consequences
23 Mar 10 - After Iceland's Laki volcano erupted in 1783, crop
production fell in western Europe. Some link that eruption, which
helped fuel famine, to the French Revolution.
See Iceland volcano could have global consequences

Could eruption last more than a year?
18 Apr 10 - In 1821, Eyjafjallajoekull volcano managed to
erupt for more than a year, sys this article on MSNBC.
http://www.msnbc.msn.com/id/36591444/ns/travel-news/page/2/

 



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