plates converge or diverge. Not only are volcanoes found in these areas but also where the Earth’s crust is stretching or thinning. There are volcanoes that form away from plate boundaries in areas that are called “hot-spots”. An example of “hot-spot” volcano formation is the Hawaiian Islands. Figure 1: (Kreger‚ 2010) The image above shows that volcanoes are created by hot magma that rises from the Earth’s core and expels through the cracks of the upper mantle and ocean crust. The movement of the Earth’s
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What is Volcanic Eruption? A volcano can be simply defined as a rupture or an opening on the crust of a planet like earth. This opening allows hot ash‚ molten rock and gases to blow off from the underground spaces. Volcanoes generally acquire shape of a mountain. Volcanoes are usually found at places where tectonic plates get converged or diverged. But there existence at a particular place depends upon many environmental and geological factors. Volcanoes can also occur at a place because of
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Mount St. Helens. Mount St Helens is a volcano in a national park in Washington State‚ USA. It had been thought to be dormant for many years‚ until in 1980‚ when it suddenly burst to life. On March 20th‚ the huge volcano suddenly ‘woke up’ when there was a 4.1 Richter scale earthquake‚ and over the next 28 days‚ there were hundreds of other recordable earthquakes. On the 25th March‚ there were 22 significant earthquakes in just 8 hours. On March 27th‚ a huge earthquake ripped a massive crater
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Decade Volcano by the United Nations. From about 35‚000 to 15‚000 years ago‚ Etna experienced some highly explosive eruptions‚ generating large pyroclastic flows‚ which left extensive ignimbrite deposits. Ash from these eruptions has been found as far away as Rome‚ 800 km to the north. Eruptions of Mount Etna: 2001‚ 2002–2003‚ 2004–2005‚ 2008-2009 and 2011 I It’s been nearly 350 years since Mt. Etna blew its top in a major way. Until 2011‚ when Europe’s largest active volcano spewed
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Iceland Introduction Iceland has a high concentration of active volcanoes due to unique geological conditions. The island has about 130 volcanic mountains‚ of which 18 have erupted since the settlement of Iceland in 874 AD. Over the past 500 years‚ Iceland’s volcanoes have erupted a third of the total global lava output.[1] Although the Laki eruption in 1783 had the largest eruption of lava in the last 500 years‚ the Eldgjá eruption of 934 AD and other Holocene eruptions were even larger. |
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very interesting and explosive volcano‚ even though it isn’t especially world renown. It is on the continent of Africa‚ near the Uganda and Rwanda border. Though it is near those borders‚ the volcano is in the Democratic Republic of the Congo. The latitude and longitude of Mt. Nyiragongo is 1.5167° S‚ 29.2500° E. Those are the introductory facts to exploring Mt. Nyiragongo; it is very much more than that though. Mt. Nyiragongo is a stratovolcano‚ a composite-cone volcano. It is on the African plate
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3qbu43A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include floods‚ volcanic eruptions‚ earthquakes‚ tsunamis‚ and other geologic processes. A natural disaster can cause loss of life or property damage‚ and typically leaves some economic damage in its wake‚ the severity of which depends on the affected population ’s resilience‚ or ability to recover.[1] An adverse event will not rise to the level of a disaster if it occurs in an area without
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(Magloff‚ 2013). To begin‚ volcanoes have large channels that transport magma and lava from the crust of the earth to its surface. Underneath the volcano in a large open space‚ is the magma chamber. The magma chamber houses all of the searing magma and lava. When there is
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Mount Ontake which caused over 50 tourist dead in centre Japan on September 27‚2014. Mount Ontake located on the Japanese island of Honshu about 100 kilometers northeast of Nagoya and about 200 km southwest of Tokyo. Mt Ontake is the second highest volcano in Japan at 3‚067 m and the spread range of spewing a deadly blanket of ash‚ rocks and steam has at least 4 Kilometers of Mt Ontake (Nagano‚ 2014). Before the eruption‚ Mt Ontake had a Level One warning attached‚ which refers no particular restrictions
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a confluence of two rivers‚ which would carry down a torrent of mud and ruin the town. The scientist did all they could to warn the townspeople‚ but they couldn’t answer the one question that everybody was asking. “When would it erupt”. When the volcano eventually did erupt this left the townspeople helpless. This naivety and the fact that the scientist could not answer the most
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