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Showing posts with label volcano. Show all posts
Showing posts with label volcano. Show all posts

March 3, 2016

Eruption Mt. St. Helens


Eruption volcano Mt. St. HelensOn May 18, 1980, a major volcanic eruption occurred at Mount St. Helens, a volcano located in the state of Washington, United States. The eruption (a VEI 5 event) was the only significant one to occur in the contiguous 48 U.S. states since the 1915 eruption of Lassen Peak in California. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes, caused by an injection of magma at shallow depth below the volcano that created a huge bulge and a fracture system on the mountain's north slope.

April 2, 2014

Eruption Volcano Eyjafjallajökull 2010

Eruption Volcano Eyjafjallajökull
Eruption Volcano Eyjafjallajökull
In April 2010, seismic activity was detected in the volcano area, with thousands of small earthquakes (mostly magnitude 1–2 on the Richter magnitude scale, with only a couple greater than 3 magnitude) 7–10 kilometres (4.3–6.2 mi) beneath the volcano. On 26 February 2010, unusual seismic activity along with rapid expansion of the Earth's crust was registered by the Meteorological Institute of Iceland. This gave geophysicists evidence that magma was pouring from underneath the crust into the magma chamber of the Eyjafjallajökull volcano and that pressure stemming from the process caused the huge crustal displacement at Þorvaldseyri farm. The seismic activity continued to increase and from 3–5 March, close to 3,000 earthquakes were measured at the epicentre of the volcano.

March 3, 2014

Eruption volcano Plosky Tolbachik on Kamchatka Peninsula, Russia

Eruption volcano Plosky Tolbachik on Kamchatka Peninsula, Russia
Eruption Volcano by RIA Novosti/Alexander Sokorenko

The Plosky Tolbachik volcano on Russia's Kamchatka Peninsula burst into activity on November 27  last year after laying dormant for 36 years.
The peninsula has a high density of volcanoes and associated volcanic phenomena, with 19 active volcanoes being included in the six UNESCO World Heritage List sites in the Volcanoes of Kamchatka group, most of them on the Kamchatka Peninsula.
The highest volcano is Klyuchevskaya Sopka (15,584 ft), the largest active volcano in the Northern Hemisphere.

February 21, 2014

Green lightning during the eruption of the volcano Chaiten in Chile

Green lightning during the eruption of the volcano Chaiten in Chile
Eruption Volcano by Landov


Green lightning strikes as the Chaiten volcano erupts in Chile. The eerie lightning strikes may be what scientists call 'streamers,' only visible when occurring in a cloud of volcanic ash.

February 19, 2014

Incredible Volcano and Waterspout Hawaii

Volcano and Waterspout Hawaii
Volcano and Waterspouts by Bruce Omori

The eruption of Hawaii’s Kilauea volcano inspires the formation of a waterspout in this undated photo. Waterspouts can emerge the way traditional tornadoes do, but not always. Many are created when near-surface winds suddenly change direction under a cloud that is producing a growing updraft. Unlike a tornado, a waterspout vortex and funnel cloud are created from the ground, or water, up.

January 14, 2014

Volcanic Eruption in Grímsvötn, Vatnajökull, Iceland

Volcanic Eruption in Grímsvötn
Volcanic Eruption in Grímsvötn by Jon Gustafsson

Iceland's most active volcano, Grímsvötn, erupted on Saturday for the first time since 2004, hurling a plume of steam and ash nearly 20 kilometers (12 miles) into the sky. People living next to the glacier where the Grímsvötn volcano burst into life were most severely affected, with ash blocking out the daylight and smothering buildings and vehicles.