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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Earthquakes in Japan The Japan is located in an area where several continental and oceanic plates meet and create a major fault line; this is the cause of frequent earthquakes and the presence of many volcanoes and hot springs across Japan. If earthquakes occur below or close to the ocean‚ they may trigger tidal waves known as tsunami. Historic earthquakes Here is a brief history of earthquake in Japan. Many parts of this country have experienced devastating earthquakes and tidal waves in the
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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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San Francisco have all experienced a fault shift. In the case of Houston‚ the likelihood of an earthquake is extremely low. The instances of a fault shift on that area of the North American Plate don’t occur often. Earthquakes that occur are not by normal means of plates shifting but from the process of fluid extraction (Fehling 19). Seattle on the other hand has a very high probability of an earthquake occurring. There are three different types of quakes that the city experiences crustal quakes‚
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CAUSES AND EFFECTS OF EARTHQUAKES‚ TSUNAMI AND CYCLONES EARTHQUAKES What are Earthquakes? ← An earthquake (also known as a quake‚ tremor or temblor) is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. The seismicity or seismic activity of an area refers to the frequency‚ type and size of earthquakes experienced over a period of time. Earthquakes are measured with a seismometer; a device which also records is known as a seismograph. The moment
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DO VOLCANOES HAVE A DESTRUCTIVE POWER AS WELL AS POTENTIAL BENEFIT Volcanoes are usually depicted as towering mountains missing a chunk out of the top from which steam‚ ash and lava spew forth. In reality‚ a volcano is any spot on the surface of the Earth where lava flows. Magma finds its way upwards along fissures or cracks in the planet ’s crust and bursts out onto the surface‚ resulting in a volcano. Magma that flows out of a volcano is called lava. If it comes out of the volcano in an explosive
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Test 3 Study Guide Test 3 will cover chapters 5‚ 6‚ 7‚ 8‚ 9‚ and the material presented on Hurricane Katrina and the recent earthquake in Japan. It will have 42 multiple-choice (2 points each) and 4 short answer/diagrams (4 points each). Topics for review * Earthquake terms: * fault: break (fracture) in a rock * rupture: breaking of rock along a fault * hypocenter (focus): rupture point of rock below surface * epicenter: point on earth surface directly above hypocenter
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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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Prediction Why didn’t scientists know about the faults that caused the two earthquakes? Prior to September 4th‚ there were no surface signs of the Greendale Fault or the fault that generated the Lyttelton aftershock and there was no evidence for seismicity on these faults (i.e. ‘foreshocks’). Seismic surveys have located some ‘hidden’ faults across parts of the Canterbury Plains‚ but these particular regions had not been surveyed for this purpose. An oil-gas seismic survey had been carried out
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Gujarat earthquake The 2001 Gujarat earthquake occurred on January 26‚ 2001‚ at 03:17 UTC‚ and coincided with the 51st celebration of India’s Republic Day. The location of the epicentre was Bhuj (23.6° N 69.8° E) Gujarat‚ India. With a moment magnitude (Mw) of between 7.6 and 8.1‚ the quake killed more than 20‚000 people and injured another 167‚000 and destroyed near a million homes throughout Gujarat and parts of eastern Pakistan.[3] The earthquake is considered an intraplate earthquake because
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