Hazards VOLCANOES INTRODUCTION Few things excite the imagination as much as a volcanic eruption‚ one of nature’s magnificent spectacles‚ which can result in devastating consequences. The very word “volcano” brings to mind thunderous explosions‚ rivers of fiery orange lava‚ and images of smoking destruction. The actual capacity for destruction is not overrated -- volcanic eruptions are one of the most devastating of all geologic hazards. There are about 700 potentially dangerous volcanoes in the
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Mud volcanoes at Berca The mud volcanoes are situated within the area of Berca village‚ Buzau county‚ on the left bank of the Berca river. They develop in the Berca depression in several places‚ known by such names as (from south to north): “La Fierbatori”‚ “Paclele Mari”‚ “Paclele Mici”‚ “Beciu”. Access road is the Buzau-Brasov highway; at a crossroads in Satuc (a small town situated 20 km far from Buzau‚ which can be also reached by railroad) ‚ a modernized byroad leads afer 2 km to the village
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people hear of Santorini‚ they think of the islands in Greece located in the beautiful waters of the Aegean sea. What many people do not know is that Santorini is in fact a scope of volcanoes‚ also known as shield volcanoes. Shield volcanoes are easily identifiable because they actually look like volcanoes (“Shield Volcanoes‚” 2016). I have actually had the pleasure of visiting Santorini a few years ago and I have included some pictures. Some of the things I have learned about this volcanic island is
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Plate Tectonics‚ Earthquakes‚ and Volcanoes Renee Kuraly 1. There are 13 tectonic plates. (several smaller ones) 2. Evidence for continental drift includes: coastline fit‚ alignment of mountain ranges‚ similar rock sequences‚ fossils‚ modern fauna‚ and ancient climates. 3. We know plate boundaries exist because their defined by earthquake data and the depths of earthquakes show what type of boundary they are. 4. Divergent Boundary- places where plates are moving apart. Convergent Boundary-
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Super volcanoes We are now in year 2016‚ and I believe that almost all people in the United State remember the disaster film called “2012”. The catastrophe included great eruptions of super volcanoes in America‚ such as Yellowstone. There are a lot of scientists doing researches of super volcanoes‚ and trying to predict when will the super volcanoes erupt again. Today I would like to introduce some knowledge of super volcanoes‚ and the reason why people do not need to worry about hazards of eruptions
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chamber below the surface. On Earth‚ volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge‚ for example the Mid-Atlantic Ridge‚ has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates coming together. By contrast‚ volcanoes are not usually created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching
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Volcanoes and Earthquakes test Bew c. 1. Where do earthquakes occur? Earthquakes occur at breaks in the earth’s crust called the fault lines. 2. What causes Earthquakes? Tectonic plates pushing‚ pulling‚ slipping past each other increasing the stress and causes elastic rebound to happen. During elastic rebound‚ energy is released and some travel as seismic waves‚ which cause an earthquake. 3. How do earthquake waves travel and what are the various types of waves? Body waves
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Hekla‚ Katla‚ and Laki are located in the south of Iceland. All of them have a distinct personality. Iceland has so many threating volcanoes as a result of its unique location. Iceland lies in the North Atlantic where two of the earth crustal plates are pulled apart. Below Iceland is a hot spot‚ where Molten material rises to Earth’s surface forming active volcanoes. Laki is well known to be a fissure volcano meaning that it erupts in a linear vent system. Laki does not erupt from a single crater
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The benefits man can reap from volcanoes are‚ the land around the volcano that erupted would having fertile soil for agriculture‚ it will also have valuable minerals found in the volcanic areas‚ examples are‚ copper‚ gold‚ sliver and more. The tourism rate of the volcanic areas will increase. And‚ there will also be a source of geothermal energy in the volcanic areas. The land around the volcanic areas will have fertile soil that is good for agriculture as‚ when there is a volcano eruption‚
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through‚ causing pressure. When the pressure becomes too great‚ the crust bursts‚ allowing the lava to escape. The area where the lava resided becomes the caldera. There are more than 1900 active volcanoes in the world today according to National Geographic.com‚ but only a handful of them are super volcanoes. Many of them are in North America‚ the most famous being the Yellowstone Caldera. The Yellowstone Caldara has been active for about 2.1 million years according to NPR.
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