Mount Ontake Research Papers

11. The horizontal distance in Figure 5 is measured in km from 77° W eastward to 71° W, covering a total length of about 550 km. The average maximum depth of the nearly horizontal eastern portion of the profile is about 4400 m. Compare this vertical cross-section with Figure 1. Figure 5 most closely resembles the [(left)(middle)(right)] portion of Figure 1.

But there are some anomalies as there are earthquakes which don’t take place on a plate boundary and it’s the same with volcanoes. An example of this is Hawaii. Hawaii is a volcanic island which is found in the middle of a tectonic plate. Hawaii is an example of a hotspot. The places known as hotspots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the mantle elsewhere. They may be on, near to, or far from tectonic plate boundaries. There are two hypotheses to explain them. One suggests that they are due to hot mantle plumes that rise from the core-mantle boundary. The other hypothesis postulates that it is not high

Antarctica is more than 95% ice covered and contains about 90% of the world's fresh water. Because of this thick ice cover, it is highest of all continents, with an average elevation of more than 1,600 m (about 5,250 ft.). The highest point on the continent is Vinson Massif (5,140 m/16,864 ft); the lowest appears to be Bentley Subglacial Trench (2,499 m/ 8,200 ft below sea level) in West Antarctica. This trench is covered with more than 3,000 m (more than 9,840 ft) of ice and snow. Lower points may exit under the ice, but they have not yet been discovered.

The new volcanic material welling up into the void, which forms a ribbon of new materials and breaks down its center gradually, when the plates move apart from the axis of the mid-oceanic ridge system. Therefore, every separating plate accretes one half a ribbon of new lithosphere, and, thus, a new surface is added (Pitman, W.C, 2007). The process is continuous, and separation is always happening at the

Imagine being on an island when all of a sudden an ear-shattering boom reverberates around you. On August 27, 1883, 10:02 in the morning, Krakatoa erupted with immense force on a modern-day Indonesia island. Almost a century later, Mount Saint Helens, located in the state of Washington, erupted at 8:30 a.m., on May 18, 1980. Although Mount Saint Helens and Krakatoa had a lot of distance from each other, they were both composite volcanoes. Composite volcanoes produce a thick lava that causes a lot of damage.

Volcanoes are one of the most destructive, yet, most beautiful things on Earth. They can make a famous city choke in its own ashes in one day, like Pompeii. Or they can turn a once damaging mountain into a graceful and peaceful home for new life, like Mount St. Helen’s. All volcanoes are unique, and no two are the same. Some erupt differently than others, some look different than others, and all are located in different spots all over the world. I learned this while completing the project and the five volcanoes I researched are examples of my discoveries. The five volcanoes I researched were Mount Hood, Mount Mageik, Long Island, Mount Muria, and Las Pilas.

The location of the volcano is also important. If it is situated on a constructive plate boundary then it is generally less explosive, and therefore poses different threats to volcanoes situated on a destructive plate boundary. The volcano may also be situated on a hotspot like in Hawaii, where the eruptions aren’t very explosive. Volcanos which aren’t explosive can pose other threats to lava flows though, such as dangerous gases being released. Like in Lake Nyos, Cameroon where 1700 people died.

Starting with the subduction of the oceanic plate which is being dragged beneath the North American Plate. The weight of the water on the oceanic plates increases the density of the oceanic crust to the point where it get snagged underneath the continental crust. After years of being dragged under the North American plate, the Pacific plate fills with high amounts energy and tension to then

stratovolcano of over 2700m above the mean sea level. It forms part of the Central American volcanic chain which resulted from

Natural or human-made structures that cross a transform boundary are offset—split into pieces and carried in opposite directions. Rocks that line the boundary are pulverized as the plates grind along, creating a linear fault valley or undersea canyon. As the plates alternately jam and jump against each other, earthquakes rattle through a wide boundary zone. The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure. The lithosphere is divided into 15 major tectonic plates: the North American, Caribbean, South American, Scotia, Antarctic, Eurasian, Arabian, African, Indian, Philippine, Australian, Pacific, Juan de Fuca, Cocos, and

Volcanoes are extremely interesting, during the past few weeks my classmates and I have been observing zone that volcanoes are located in. My zone was zone two. Zone two is location was on the South American plate, Caribbean plate, and some of the North American plate. Overall my zone was active. Everyday there was at least one volcano active. The first few days of observing the volcanoes were fairly active. One erupting volcano that I recorded on my chart was the volcano Popocatepetl. This volcano is located in Mexico on the North American Plate. I recorded that the volcano was erupting on December 5th, 2016. This is one of the many erupting volcano that occurred on the first few days of monitoring. After a few day the eruption rate did

These superfast mega-explosions of steam, rock and ash stick to the sides of the volcano, reaching speeds of up to over 400 miles per hour as they head downslope. Mount Ontake’s most recent eruption was a smaller one which is a blowout of ash, rock, and steam, without the presence of lava. This type of eruption is also known as a phreatic eruption. The immense amount of carbon dioxide or hydrogen sulfide from these eruptions can asphyxiate people. It appears as though many of the hikers stranded on the mountain suffered from

This is only a general overview of the inner workings of volcanoes and their eruptions. For more infomation, visit Volcano World -- The Premier Source of Volcano Info on the Web.

lower shores. It is found in brackish water. It is found on coasts and not

Volcanic Eruption, which means the sudden occurrence of a violent discharge of steam and volcanic material, is one of the catastrophes in human history. It can devastate enormous areas, as well as people. The eruption of the Vesuvius in AD 79 buried the cities of Herculaneum, Pompeii and Stabiae with ashes and mud. (Oracle think quest) The majority of ancient volcanoes, like Mt. Vesuvius in Italy and Mt. Tambora in Indonesia are all dormant volcanoes now. However, Mt. Etna, which have been erupting for millions of years, still remaining active now. (Sicily Life) From 4 May 2011 to 6 May, it erupted and emitted enormous lava - molten rock - and ashes - chemical composition and abrasive of the particles from a volcanic