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16663
“El Hierro Volcanic Alert Status Raised to Yellow - Following Increase in Quake Activity”
by You Tube   
June 29th, 2012

June 27, 2012CANARY ISLANDS – Seismic activity has increased on the volcanic island of El Hierro. The INVOLCAN, the Volcanological Institute of the Canaries, and the PEVOLCA (the Civil Protection Plan for Volcanic Risk), have raised the alert status in parts of El Hierro to “Yellow.” About 580 earthquakes were registered from Monday to Wednesday. Thirty of them were greater than magnitude 3 on the Richter scale – a level at which they can usually be felt. The volcano 24 hour monitoring network, National Geographic Institute (IGC), recorded a total of 221 earthquakes on the island of El Hierro, specifically in the municipalities of Frontera and El Pinar, on Tuesday June 26.

El Hierro is currently the most volcanically active of the Canary Islands. According to ElHierro.com,“El Hierro has the largest number of volcanoes in the Canaries with over 500 open sky cones, another 300 covered by the most recent outflows, and some 70 caves and volcanic galleries. Since the Spanish occupation, there have been seven eruptions. More than 200 years have elapsed since the last eruption. The island of El Hierro emerged from the ocean after three successive volcanic eruptions and consequent accumulations, crowned by a volcano more than 2,000 metres high. During seismic tremors some 50,000 years ago, a giant piece of the island cracked off, crashed into the ocean and caused a giant tsunami that most likely rose more than 330 feet (100 m) high and probably reached as far as the American coast. About a half a million years ago, the volcano, Taburiente, collapsed with a giant landslide. In a BBC Horizon program broadcast on 12 Oct 2000, geologists hypothesised that a during a future eruption a similar landslide could potentially generate a “megatsunami” some 2000-3000 ft (650–900 m) high in the region of the islands. The huge wave would radiate out across the Atlantic and inundate the eastern seaboard of North America including the American, Caribbean and northern coasts of South America a mere six to eight hours later.

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