January 29 2013
Mt Etna is the largest active volcano in Europe. It has an elliptical base (38 × 47 km) and a maximum elevation of about 3350 m. It is classified as a Shield volcano .
A shield volcano is a type of volcano built almost entirely of fluid lava flows. They are named so because of their large size and low profile, resembling a warrior’s shield. This is caused by the highly fluid lava they erupt, which travel farther than those erupted from more explosive volcanoes. This results in the steady accumulation of broad sheets of lava, building up the shield volcano’s distinctive form.
Nine days after my visit to Mt. Etna an ash eruption occurred at the summit of Mt Etna volcano, Italy on 8th April 2010. The eruption occurred at the lower east flank of the Southeast Crater. The eruption increased the crater from 10 m to 50 m. The eruptions were preceded by a series of earthquakes at the Pernicana fault on 2nd April. This was the first time in 6 years that earthquakes occurred in this location on Mt Etna (NE flank). The largest earthquake was magnitude 4.2. Ground cracking occurred adjacent to Ragabo mountain hut. Mareneve road, which links the town of Linguaglossa to the tourist area of Piano Provenzana, was fractured in two locations. The earthquake focus was at a depth of 1 km, and surface fractures occurred over a distance of 1 km. At a location 1 km up slope from Ragabo mountain hut, there was vertical displacement of the ground by 20 cm.
To read more about volcanos go to Volcanolive.com- John Seach is a scientist and the world’s leading volcano adventurer. Over the past 22 years John has traveled to the world’s most exciting volcanoes, and witnessed eruptions during trips to more than 180 volcanoes. John has worked on many award winning television programmes.
Canon PowerShot SX1 IS
Taken: March 29 2010