Alaska earthquake http://www.iris.edu/hq/files/programs/education_and_outreach/aotm/31/Alaska1964EarthquakeCauses.mp4 A lot of excellent information is packed into this short video. 1. How many minutes did the shaking last? The shaking lasted 4.5 minutes. 2. What was the magnitude of the earthquake? The magnitude of the earthquake was 9.2. 3. This earthquake occurred just as geologists were figuring out plate tectonics. What principle of plate tectonics did the earthquake confirm
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EARTHQUAKES Introduction and Terminology • Vibrations in the earth’s crust that occur when strain in the crust is suddenly released by displacement along a fault line • Focus = point at which an earthquake originates inside the earth. May be many km below surface • Epicentre = the point on the earth’s surface directly above the focus. Strongest shock normally felt here. Most damage usually occurs here. • Seismology = the study of earthquakes – from Greek – seio – to shake
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The December 26‚ 2004 Sumatran Tsunami [pic] On the morning of December 26‚ 2004 a magnitude 9.3 earthquake struck off the Northwest coast of the Indonesian island of Sumatra. The earthquake resulted from complex slip on the fault where the oceanic portion of the Indian Plate slides under Sumatra‚ part of the Eurasian Plate. The earthquake deformed the ocean floor‚ pushing the overlying water up into a tsunami wave. The tsunami wave devastated nearby areas where the wave may have been as high as
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The December 2004 Earthquake in Northern Sumatra‚ Indonesia Sarah Loiacano November 16‚ 2010 Geology Section H004 On December 26‚ 2004‚ mass destruction and devastation was the result of a large earthquake off of the West Coast of Northern Sumatra‚ Indonesia. The earthquake began in the early morning on Sunday at 7:58:53 AM‚ and wreaked havoc on thousands in the affected areas. BBC News reported on the earthquake‚ stating that “Sunday’s tremor – the fourth largest since 1990 – had a particularly
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one of the deadliest earthquakes shook Japan on March 11th 2011. A 500 kilometre-long fault zone was ruptured off the northeast coast of Japan. The epicentre was situated 130 kilometres east from the big city‚ Sendai. The focus occurred at a relatively shallow depth (about 30 km) underneath the Pacific Ocean. The earthquake had the largest magnitude of 9.0‚ which Japan had ever recorded and can only be explained by plate tectonics. As seen in figure 3‚ the earthquake occurred in a subducting
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2011 Tōhoku earthquake and tsunami Name of Student Name of Instructor Date Contents Introduction 3 Impacts of the Disaster 4 Ethical and Social Issues 6 References 13 Introduction The 2011 earthquake and tsunami that hit Japan were considered as one of the worst disasters that hit any country in the world. This disaster also affected various parts in Japan particularly the northern areas like the Ibaragi‚ Fukushima‚ Miyagi‚ and Sanriku. Disaster agencies have measured the 2011
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The worst earthquake Haiti has experienced in two centuries has hit south of the capital Port-au-Prince on Tuesday (12/01/2010)‚ destroying homes‚ hospitals‚ schools and effecting up to three million people. The earthquake hit at 4:53 PM (Pacific Time)‚ 25 km southwest of Port-au-Prince. The initial shock registered at a magnitude of 7.0 and was followed by two aftershocks of magnitudes of 5.9 and 5.5. More aftershocks are expected to follow in the coming days. The focus occurred at a depth of
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The Atlantic Ocean is a little smaller than the Pacific Ocean. sharks are found in the Atlantic Ocean‚ which is near the gulf. A pretty cool fact I found is a mountain called the mid-Atlantic Ridge. Secondly‚ the Southern Ocean close to Antarctica. The arctic ocean is the habitat of the penguins we call Emperor penguins. the arctic ocean is five million square miles big to a depth of eight-teen thousand. The Atlantic Ocean runs 32 million square miles‚ the arctic ocean is five million square miles
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The largest earthquake ever occurred in the 20th century was the Valdivia Earthquake. As cited in the sources‚ the magnitude of this powerful earthquake was approximately 9.5 and totally destroyed communities near the epicenter. Because this great number of magnitude has a power to eradicate everything around it. Other earthquakes might be the larger but it’s the first one since accurate estimates of magnitude became possible. This was a megathrust earthquake which means that an earthquake occurred
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Japan and Earthquake/Tsunami Mitigation Geography 312 – Term Paper Alexandra Bradshaw – 301144682 March 29th‚ 2012 On March 11th 2011‚ Japan suffered a 9.0 magnitude earthquake off its northern coast‚ followed by an enormous tsunami which took the lives of around 20‚000 people. An earthquake of this magnitude had never been experienced in the history of mankind‚ and came as a shock to many seismologists. With the title of being the most earthquake prepared country in the world‚ Japan was thought
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