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Earthquake presentation

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Earthquake presentation

  1. 1. EARTHQUAKES SEAN ROBERTSON CHRISTIAN LESSEY NATE BOWERS DECEMBER 12, 2013
  2. 2. Earthquakes • • • • • • Earthquakes can happen anywhere Missouri Florida California Utah These are just a few places, not a full list
  3. 3. EARTHQUAKES • Most earthquakes happen in the ocean however • Alaska has a lot since 1899 to present it has had 49 major earthquakes M 7.0 or higher • Every state in the U.S. has had an earthquake
  4. 4. Ring of Fire
  5. 5. Earthquakes in Alaska
  6. 6. Alaska • March 9 1957 Andreanof Island has a M 8.6 • Bridges are damaged docks destroyed and it even caused Mount Vsevidof to Erupt which was dormant for 200 yrs. • Caused a Tsunamis which continued to Hawaii, California, Chile, El Salvador, and Japan • More than 300 aftershocks where reported
  7. 7. Alaska • They also had earthquakes on March 12, 14, 16th all on Andreanof Island • On the 9th there was also an earthquake on Fox island • They were all over M 7.0
  8. 8. Alaska • July 10, 1958 Lituya Bay, Alaska has a M 7.7 earthquake • Not much damage to man made works minimal since there was not much in alaska • Landslides reported in the mountains
  9. 9. Earthquakes in Alaska
  10. 10. Practice
  11. 11. ALARM SOUND and DRILL
  12. 12. Great Shake Out Drills Steps during and Earthquake • Drop • Cover • Hold on http://www.youtube.com/watch?v=bAHNhtRT50A
  13. 13. Siren • http://www.youtube.com/watch?v=aOyopQ4 8Wp4 • http://www.youtube.com/watch?feature=pla yer_detailpage&v=nMc3M4rrL_w
  14. 14. The Great Alaskan Earthquake of 1964
  15. 15. The Initial Event •Occurred Friday, march 27th 1964 at 5:36 P.M. •Lasted three minutes
  16. 16. Aftershocks • Thousands of large aftershocks that were felt up to three weeks after the initial event • Caused many landslides and subsidence • Up to magnitude 7 • Some occurred up to a year later
  17. 17. Epicenter • Epicenter was located 12.4 miles north of Prince William Sound, 78 miles east of Anchorage
  18. 18. The earthquake registered at 9.2Mw
  19. 19. The Damage • Caused $311 million (2.26 billion in current U.S. dollars) in Alaska and other places • Cleanup took 15+ years to complete
  20. 20. Tsunamis and Surge Waves • The quake and its aftershocks created tsunamis that caused damage in California, Hawaii and Oregon • The tsunamis were up to 30ft tall • Some water levels were up to 80ft above sea level • The towns of Whittier, Valdez, and Kodiak were almost completely destroyed
  21. 21. Surge Wave Damage Kodiak, AK
  22. 22. Surge Wave Damage Seward, AK
  23. 23. Deaths Caused • 128 people killed – 113 from the tsunamis – 15 from the earthquake • The death toll would have been much greater had the quake occurred present day
  24. 24. Subsidence • The earthquake created grabens up to 8ft deep
  25. 25. Tectonic Uplift
  26. 26. Both of these areas were more than 30ft underwater before the event. The quake caused the land in some places to rise so rapidly that trees were torn in half.
  27. 27. Fissures The earthquake left large fissures in roads and bedrock, some were up to 6ft wide
  28. 28. Earthquakes Seismic waves & Destruction of property
  29. 29. • Different motions of Earthquakes.
  30. 30. • Are the fastest waves and are the first waves recorded by seismographs. Some call P-waves push-pull wave because of the way they contract and expand as they are traveling
  31. 31. Visual example of a p-wave
  32. 32. S-Waves can’t travel through liquids or gases. They require rigid material like ground, rock, roads or buildings
  33. 33. Visual example of a S-wave
  34. 34. Human interaction • Base isolation bearings
  35. 35. Elastic Cables Steel frame Shoes Steel fuses (in blue)
  36. 36. SOURCES FOR EARTHQUAKE PROJECT. HTTP://EARTHQUAKE.USGS.GOV/EARTHQUAKES/STATES/EV ENTS/1964_03_28.PHP HTTP://LIBRARYPHOTO.CR.USGS.GOV/CGIBIN/SEARCH.CGI?SEARCH_MODE=NOPUNCT&FREE_FORM= ALASKA&FREE_FORM=EARTHQUAKE&FREE_FORM=&FREE_ FORM= HTTP://WWW.DRGEORGEPC.COM/TSUNAMI1964CANADA. HTML
  37. 37. SOURCES FOR EARTHQUAKE PROJECT. MCEER,.BUFFALO.EDU/INFO SERVICE/REFERENCE. WWW.POPULAR MECHANICS.COM BRUCE A. BOLT, EARTHQUAKES: A PRIMER WH FREEMAN AND COMPANY EARTH SKY.ORG/EARTH WWW.LAMIT.RO/EARTHQUAKE SIMPLY GEOLOGY. WORD PRESS.COM

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