been struck by an earthquake. You are a scientist with the USGS and need to figure out all the specifics on the earthquake because an earthquake has never occurred here before. You have a few things to do as a person working for the USGS to keep your job as the seismologist on staff. 1. Using the 3 seismograms recorded‚ figure out the epicenter location using the data and the P/S wave time-travel graph. One of the seismograms has been done for you. 2. Determine if the earthquake came from a fault
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1.Earthquakes 1. According to dictionary.reference.com an earthquake is a: Series of vibrations induced in the earth’s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. The earth is made up of tectonic plates these are massive slabs of rock floating on magma ‚as the plates move about‚ they spread apart‚ collide‚ or slide past each other‚ This is the main cause of volcanoes and earthquakes Earthquakes occur in many regions all over the world
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others‚ but no matter the severity‚ there is usually a loss‚ and a cry for help. The first one I want to talk about is the earthquake that hit Haiti in 2010. By January 24th‚ at least 52 aftershocks (a smaller earthquake following the main shock of a large earthquake)‚ measuring 4.5 or greater had been recorded. An estimate of three million people were affected by the earthquake. Death toll estimates ranged from 100‚000 to 160‚000. 316 total had been affected overall. Estimated 250‚000 residences and
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“Japan earthquake: Tsunami hits north-east” Source: BBC 2‚ Horizon Special Professor Ian Stewart‚ Geologist Broadcast on 27th March 2011 In this programme‚ Ian Stewart examines the powerful geological forces that caused the devastating Japanese earthquake. 30% of all earthquakes across the world happen in Japan. Earthquakes are caused when the tectonic plates (giant slabs of rock) grind together causing the build up of huge forces. When the pressure gets too much‚ the edges of the plate suddenly
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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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September 2nd‚ 1886 August 31‚ 1886‚ was one of the worst days in Charleston‚ that day we had a major earthquake of the likes of which I have never felt. The day started off as a nice calm day. My mom and I were reading a book and then all of a sudden I could hear this rumbling sound that seemed to come from inside earth. It started off as a gentle vibration then after a few minutes the noise and the vibrations became more violent. It was as if the earth had a terrible stomach ache. The shake
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buildings included 29‚500 structures in Miyagi Prefecture‚ 12‚500 in Iwate Prefecture and 2‚400 in Fukushima Prefecture. Three hundred hospitals with 20 beds or more in Tōhoku were damaged by the disaster‚ with 11 being completely destroyed. The earthquake and tsunami created an estimated 24-25 million tons of rubble and debris in Japan. An estimated 230‚000 automobiles and trucks were damaged or destroyed in the disaster. As of the end of May 2011‚ residents of Iwate‚ Miyagi‚ and Fukushima prefectures
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Earthquake Do’s & Don’ts* Disaster is a sudden calamity that brings destruction‚ damage‚ devastation (3Ds) that results loss to life and property. Natural disasters are often frightening and difficult for us to understand‚ because we have no control over when and where they happen. Disasters usually have following features: • Unpredictability • Sudden • Unfamiliarity • Shock reaction • Confusion • Panic God forbid‚ Natural disasters sometimes appear in the form of Earthquakes‚ Volcanic eruptions
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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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The Wall Street Journal opens by defining the Haiti Earthquake as the strongest to hit the Caribbean in more than two centuries. Various witness reports were included‚ one of which from the Administer of Mercy and Sharing in Haiti: a charity that houses 109 orphans‚ notes the various dead bodies lying on the street‚ the numerous injured citizens‚ and the ringing cries of help in an area just 10 miles outside of the earthquakes epicenter. The report specifically describes the devastated infrastructure
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