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Archive for Volcanoes

Spectacular Eruption of Mount Etna – November 17th, 2013

37.7N 14.9E

November 19th, 2013 Category: Volcanoes VIIRSSuomi-NPP

Italy – November 17th, 2013

Visible in the center of this image is Mount Etna, in Sicily, Italy. A white cloud of ash and steam can be seen spewing forth from the volcano, which is already erupting for the third time in 2013 (previous ones were on 11 April and 26 October). Mount Etna is one of the most active volcanoes in the world and is in an almost constant state of activity.

Fires in Colorado and New Mexico, USA

36.9N 106.5W

June 24th, 2013 Category: Fires, Volcanoes MODISAqua

USA – June 24th, 2013

Several wildfires can be seen burning in the forests of Colorado (above) and New Mexico (below), USA, in this image. Winds are carrying the thick plumes of smoke towards the northeast. In the full image, another blaze can be seen west of the Carrizozo lava field.

Volcanic Events in Craters of the Moon National Monument, USA

43.4N 113.5W

June 16th, 2013 Category: Volcanoes MODISTerra

USA – June 15th, 2013

Craters of the Moon National Monument, in Idaho, visible here as an upside-down V-shaped brown area on the right side of the image, is a vast ocean of lava flows with scattered islands of cinder cones and sagebrush. Volcanic events were reported in the area on June 15th, and are expected to continue today.

Between 15,000 and 2,000 years ago, the Craters of the Moon Lava Field formed during eight major eruptive periods. During this time the Craters of the Moon lava field grew to cover 618 square miles. The Wapi and Kings Bowl lava fields formed contemporaneously about 2,200 years ago.

Currently, this region is experiencing basin and range type faulting, which is stretching or pulling apart the crust. The Lost River Range north of the town of Arco provides good evidence that these forces are still active. In 1983 these forces caused a magnitude 6.9 earthquake, during which Mount Borah rose about 1 foot and the Lost River Valley in that vicinity dropped about 8 feet.

On the Eastern Snake River Plain, rather than producing mountain ranges, the tensional forces have caused decompression melting, which results in dike emplacement and periodic eruption of molten rock onto the surface. As long as these forces continue to act, more eruptions will occur.

Haruj Volcanic Field Surrounded by Libyan Desert

27.1N 17.4E

June 1st, 2013 Category: Deserts, Volcanoes

Libya – May 30th, 2013

Visible as a dark brown circular area south of the Gulf of Sidra is the Haruj, a large volcanic field spread across 45,000 km2 (17,000 sq mi) in central Libya. It contains about 150 volcanoes, including numerous basaltic scoria cones and about 30 small shield volcanoes, along with craters and lava flows.

Plume of Ash from Mount Etna, Italy – April 13th, 2013

37.7N 15.0E

April 13th, 2013 Category: Image of the day, Volcanoes

Italy – April 12th, 2013

A plume of ash billows forth from the caldera of Mount Etna, on the Italian island of Sicily, and blows due southeastward over the Mediterranean Sea. According to ground reports, the volcano has experienced  a series of paroxysms with lava fountains since the first week of April, and is now also experiencing vulcanian activity – truly explosive activity characterised by a dense cloud of ash-laden gas exploding from the crater and rising high above the peak. These are not something normally seen on Etna where ‘Strombolian’ activity is more common.