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Volcanoes

Page history last edited by Gillian westerman 5 years, 10 months ago

Understand the nature of volcanoes and lava types  

 

National Geographic's interactive site provides a good explanation of Nyiragongo , also see the BBC news reports, follow the links to see a variety of reports.  The Geographical association also has some useful resources and links

 

Etna's at it again!Tectonic Hazards Plate tectonics and associated hazards Plate tectonics and associated hazards

 

Montserrat

 

Mount Pinatabo erupted violently in 1991:

In June 1991, after more than four centuries of slumber, Pinatubo Volcano in the Philippines erupted so violently that more than 5 billion cubic meters of ash and pyroclastic debris were ejected from its fiery bowels producing eruption columns 18 kilometers wide at the base and heights reaching up to 30 kilometers above the volcano’s vent.

In its wake 847 people lay dead, 184 injured, 23 missing, and more than 1 millon people displaced. Hundreds of millions of dollars in private properties and infrastructure lay in ruins which would require tens of billions of pesos and several years to rebuild. For months, the ejected volcanic materials remained suspended in the atmosphere where the winds dispersed them to envelope the earth, reaching as far as Russia and North America. This phenomenon caused the world’s temperature to fall by an average of 1 degree Celsius. Clearly, Pinatubo’s eruption signals the world’s most violent and destructive volcanic event of the 20th century.  Find out more by watching this and see this page followed by this one.

 

Chile -  Chile's Puyehue-Cordon-Caulle volcano range, about 800km (500 miles) south of Santiago, began erupting on Friday 3 June 2011.  Look back at what happened in Chile in 2008, what were the causes, impacts and responses to this eruption? 

Chaitén is a small volcanic caldera located on the flank of the Michinmahuida volcano in southern Chile. Before 2008, it consisted mainly of a rhyolitic lava dome last active 9,400 years ago. But in May 2008, Chaitén began erupting violently, producing numerous plumes, pyroclastic flows and lahars, and building a new lava dome on the north side of the old one. The eruption has had serious consequences for the nearby town of Chaitén, inundating it with lahars and ash, and ash from the eruption has even disrupted travel and agriculture in surrounding countries.  Follow the links on the BBC  reports to find out more. Some great pictures of the ash erupted in June.

 

Indonesiamultiple hazards - make sure you know the cause, effects and response to the volcanic eruption and the tsunami... - Indonesia.    Nov 5th - 64 more killed - start making this into a case study if you haven't already!! 

 

 

Eyjafjallajökull  volcanic eruption - follow the eruption via BBC news - link it to the global nature of the food industry!  A good summary and a model to make!

 

Grimsvotn May 2011 - different impact?

The ash particles from this eruption are said to be larger than last year and, as a result, fall to the ground more quickly.

 

what if Katla erupts?

 

It's not all lava and ash - Mount Nyos Cameroon - silent but deadly! And Nevado del Ruiz, Columbia

 

Is it possible to predict all eruptions - Japan's Mount Ontake Sept 2014. The Guardian - it occurred without warning.

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