Small volcanoes cool the Earth

July 6. Products of volcanic eruptions that do not reach the stratosphere once, after a while there is still carried by atmospheric currents and begin to reflect the sun's rays.

Scientists have shown that even small volcanic eruptions have a significant impact on the climate, saturating the upper layers of the atmosphere of their emissions. The study is published in the journal Science.

Previously it was thought that only large volcanoes that could throw ash particles directly into the stratosphere affect climate in the long term. Sulphur dioxide (SO2), one of the main products of volcanic activity, forms in the

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Etna volcano eruption

Eruption of Etna Natural Disasters

After a 12-day Strombolian activity in the southeast of Etna February 9, 2012 in one of the craters, a series of paroxysmal eruptions, the second in 2012. Although the event was less powerful, but it lasted more than 5 hours. Interrupted activity of the 8 February, reaching its peak at night to the eruption of lava up to a distance of 500 meters. Rising column of ash several kilometers into Catania airport forced to cancel all morning flights. At some explosions from the crater were ejected volcanic bombs, most of which came back into the

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Scientists are trying to understand the causes of the medieval cooling

January 31. A new study conducted by experts from the University of Colorado at Boulder (USA), claims that the mysterious cooling, marked on the planet centuries ago, was caused by a series of powerful volcanic eruptions that triggered the chain of a number of climatic fluctuations, in particular a marked expansion of the polar ice caps. In the scientific literature cooling in the Middle Ages, often referred to by experts as the Little Ice Age.

Climate scientists studied chemical deposits in the Arctic Circle, analyzed a large amount of soil sediments and came to the conclusion that the

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How long does it take for volcanoes 'charge'?

August 2, 2013. The journal Nature recently published an interesting information about the inner life of terrestrial volcanoes. Received news about volcanoes can be divided into "good" and "bad." Let's start with the "bad."

As the researchers from Columbia University, on this planet, there are special types of volcanoes, which to recharge the regular portion of fresh lava requires only a few days, at most, a week. Previously, it was believed that the preparations for the new full eruption takes much more time. The eruptive activity of volcanoes erupting at the same time reserving and fresh hot magma in its

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The inner life of volcanoes

The inner life of volcanoes Facts

Two new studies at the University of Leeds, UK, on the inside of volcanoes may help scientists come closer to the prediction of powerful eruptions. The main work carried out in Afar, Ethiopia, and in Iceland, since that is where the mid-ocean ridge comes to the surface, which greatly facilitates the organization of observations.

Volcanic ridges occur when tectonic plateau crush or disperse. Magma, molten rock that seeps into fractures thinned crust in the form of lava, and solidify to form new crust. Accumulations of magma work as sewage systems, high pressure paving the

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More active volcano in Hawaii

Volcanoes

Kilauea is active for 28 years. Photo all-wallpapers.ru

12.03.11.Na Hawaii scientists closely monitoring erupting volcano Kilauea, which has recently been somewhat more active.

This decision was taken after the eruptions of lava flow rose to a height of about 20 meters. Visitors to the park, on whose territory the Kilauea, asking not to approach the volcano.

Kilauea is active for 28 years, but the geologist Janet Babb of the U.S. Geological Survey said that the increased activity of the volcano means "new eruptions, and the future is unknown."

Last Saturday of the bottom of a crater collapsed

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Little Ice Age 13-16 Ages was triggered by volcanic eruptions

A series of volcanic eruptions in the middle of the 13th century could be one of the triggers of the "little ice age" — the era of strong climate cooling in the Late Middle Ages and in the New Era, say American Geophysics in an article in the journal Geophysical Research Letters.

To date, the exact timing of this cooling period is not defined. According to the official definition of NASA, the Little Ice Age lasted from short warm "breaks" from 1550 to 1850. Most climatologists and geophysicists associate it with the fall of the active phase of

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Emissions in Kamchatka volcano ash could interfere aviation

© RIA Novosti. Pevzner

Kamchatka volcano Kizimen eruption which lasts for a year, may next week start throwing ash to a height of more than 10 kilometers, creating, thus, the risk to air travel, the press service of Kronotsky reserve.

"The latest satellite data of Volcanic Eruption Response indicate that the outpouring of lava flow on the north-eastern slope of the volcano continues. Forecasts for next week, plumes above 10 feet above sea level is possible. Ash plume can be hazardous to flight international and local airlines "- written specialists Kamchatka reserve.

To clarify forecast volcanic activity to Kizimenu

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In Japan, the most calm agitated volcano (video, webcam)

Most stable in Japan Sakurajima volcano woke up. Webcam recorded eruption October 9 eruption height of 1600 meters, and the height of the October 10 release of 1500 meters.

Certificate (From GeoWiki — open encyclopedia on Earth Sciences)

Sakurajima volcano in Japan

Sakurajima (Sakurajima) — an active volcano and the island of the same name (now connected to the mainland). This is a complex volcano with a peak split into three peaks, Kitadake (northern peak), Nakadake (central peak) and Minamidake (southern peak), the most active. The island — about 77 square kilometers

North Peak volcano has a

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Famous volcano was not extinct

In Yellowstone National Park in the United States found beneath the volcano, a huge swimming pool Glow magma length of about 640 km.

Previously, scientists thought that the volcano goes off, but now it is the opinion denied. According to the analysis of scientists from the University of Utah, a giant volcanic plume is at a depth of 660 km at an angle of 40 degrees from east to west, and its length is equal to 640 km.

In the plume is a large amount of a substance in a liquid state. Crater National Park was formed after

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