A volcano is a mountain that opens downhill to a reservoir of molten rock below the surface of the earth. When pressure from gases within the molten rock becomes too great, an eruption occurs. Eruptions can be quiet or explosive. There may be lava flows, flattened landscapes, poisonous gases, and flying rock and ash that can sometimes travel hundreds of miles downwind. Now, we are continuing our range of tops, and this time it is about dangerous volcanos. Below we are going to touch upon your attention introducing top 10 dangerous volcanos.
New Study shows the mechanics and movements beneath the surface that contribute to Yellowstone eruption. Yellowstone eruption is special and important, because it can end up allowing for the creation of systems that will help scientists guess future events. “While Yellowstone eruptions currently don’t pose a significant threat, there are volcanoes around the world that could potentially cause a significant amount of damage if we aren’t able to prepare for them. By using this new knowledge to develop novel new prediction techniques, we may be able to better equip at-risk areas with the knowledge and infrastructure they need to prepare for volcanic eruptions” mentioned valuewalk.
According to the data received by the satellite of ALOS, five Japanese volcanoes settled on the average on 15 centimeters in comparison with the sizes only a few years ago. All of these volcanoes settled down on the island of Honshu at distance of 200 kilometers from earthquake epicenter. As the precondition subsidence was served by an earthquake of 2011. The same happened after an earthquake measuring 8,8 points by the Richter scale to all Chilean volcanoes located in a zone with a diameter of 400 kilometers from epicenter. The similar effect appeared quite normal consequence of strong earthquakes.
Iо was opened by Galilei in 1610 together with three other satellites of Jupiter – Europe, Ganymede and Callisto. This planet is “champion” for volcanic activity in Solar System.
Volcanoes on the most geologically active planet of Solar system Io, the satellite of Jupiter, are in the wrong place. They are not coinciding with the center of tectonic activity, which calls into question the computer models.
Ultrahigh tectonic activity of Io is explained so: its subsoil are warmed under the influence of the tidal forces resulting gravitational interaction of Io, Jupiter and her two neighbors – Europe and Ganymede.
The group of astrogeologists by leadership of Christopher Hemilton from University of Maryland in the city College Park (USA) compared the modern models of tectonic activity of Io with a global map of a volcanism on the satellite of Jupiter.
The top of the Kizimen volcano is covered by ashes, lava and various volcanic emissions. The satellite of NASA Earth Observing-1 (EO-1) allowed to register eruption consequences, having made this picture on March 12. It is possible to notice that the smoke column still rises from top while snow covers a lava stream on East side of a volcano. Kizimen is a start volcano, which height makes 2376 m. The form of volcano reminds the Japanese mountain of Fuji before its eruption in 1980. The main crater of a volcano is expressed poorly. Kizimen’s slopes are covered with different volcanic outbursts.
Some time ago there was an eruption of a Japanese Sakurajima volcano, which threw out melted lava with huge force. This process was accompanied with volcanic lightning. It looks unusually: clouds of a black smoke and lightning escaping from them. The photographer of Martin Rietze could capture this volcanic lightning eruption. There is no consensus among the scientists regarding the formation of volcanic lightning during the eruption. The question connected with the formation of usual lightning, is still in a stage of studying. But the reasons of emergence of volcanic lightning is even less clear. According to the hypotheses, thrown-out bubbles of magma or a volcanic ash carries an electric charge. But volcanic lightning can be formed by collisions as a result directing a charge in a volcanic dust. The scientists found two versions of volcanic lightning.
The newly discovered glass dune fields, spread across almost a third of the planet Mars, likely formed from interactions between magma and ice, or water, interactions that could create the perfect environments for microbial life. The northern lowlands spread across millions of square miles in the Red Planet’s northern hemisphere. But dark sediments in the region have puzzled planetary scientists. Briony Horgan and James Bell, both of Arizona State University, used the European Space Agency’s Mars Express orbiter to re-examine light radiated from the Martian plains.
As said researchers Giant coils of lava on Mars suggest a mysterious network of valleys on the planet was born from volcanoes. The origin of the Athabasca Valles region near the equator of Mars has been debated for more than a decade. Some researchers have proposed that lava once shaped the valleys, while others have thought ice was responsible. The way the ground there is patterned with multisided polygons suggests that either fire or ice could be the culprit, such patterns of cracks might have formed due to seasonal fluctuations in temperature if the surface there was rich in ice, but also might have arose as lava cooled and fractured.
The world’s most dangerous volcano has erupted 70km (40 miles) from Mexico City, sending plumes of ash and water vapour into the sky. A heavy plume of ash covered the sky over Mexico’s Popocatepetl volcano early Friday morning as glowing rock shot out from its crater. Webcam images on the site of the National Disaster Prevention Center showed the plume rising from the top of the 17,886-foot (5,450-meter) peak at dawn, though clouds obscured the volcano for people further away.