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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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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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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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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Death Toll from a Earthquake!! Number of Earthquakes Worldwide for 2000 - 2012 Located by the US Geological Survey National Earthquake Information Center (M4.5+ for most of the world; doesn’t include US regional network contributions) Magnitude 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 8.0 to 9.9 1 1 0 1 2 1 2 4 0 1 1 1 2 7.0 to 7.9 14 15 13 14 14 10 9 14 12 16 23 19 12 6.0 to 6.9 146 121 127 140 141 140
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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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1)Abstract 2)Introduction 3)Causes of earthquakes 4)Basic terminology: a)Hypocentre‚ b)Epicentre c)Focal depth 5)Earthquake size a)Magnitude b)Intensity 6) Earthquake hazard a)Primary effects b)Secondary effects 7)Earthquake loads on buildings 8)How Buildings Respond to Earthquakes 9)Common Modes of Failure a)Structural
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12 7.0 Conclusion 13 8.0 Reference 14 The effect of earthquake on buildings in Japan 1.0 Abstract The country of Japan is an island. The population in Japan is considered quite high‚ about 127‚817‚277 people in this small country. Therefore‚ this has made Japan became one of the most tightly populated country in the world‚ ranking the 36th placing. Earthquakes are very common in Japan. In fact‚ Japan had suffered more earthquakes compared to other. Therefore‚ engineers have put in a lot of
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EARTHQUAKE ENGINEERING IN AUSTRALIA BEFORE MECKERING AND AFTER NEWCASTLE by Charles Bubb BE‚ DIC (Eng. Seis.)‚ FIEAust‚ CPEng SUMMARY Earthquake Engineering in Australia‚ as elsewhere‚ has been formulated in the aftermath of damaging earthquakes. The first Australian Code AS2121-1979 was written and published after the 1968 Meckering WA earthquake. The second AS1170.4 1993 was published after the 1989 Newcastle NSW earthquake. Good quality Building Codes are a necessary basis for sound earthquake
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EARTHQUAKE An earthquake (also known as a tremor‚ temblor or seismic activity) is the result of a sudden release of energy in the earth’s crust that creates SEISMIC WAVES. Earthquakes are measured with a seismometer; a device which also records is known as a seismograph. SEISMIC DEFORMATION When an earthquake fault ruptures‚ it causes two types of deformation: static; and dynamic. Static deformation is the permanent displacement of the ground due to the event. The earthquake cycle progresses
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