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    Brendan,rocco+philly Brendan,rocco+philly Presentation Transcript

    • Earthquakes and Seismic Waves Brendan Gubbini, Rocco Stralle, and Michael Phillips Mrs. Smith 4th April 8, 2011
    • Basic Background Information
      • What is an earthquake?
      • Series of Vibration in the earth’s crust.
      • How are earthquakes measured?
      • They are measured by a Richter scale.
      • What does magnitude mean?
      • magnitude measures the energy released at the source of the earthquake.
      • How is magnitude measured?
      • They are measured by a seismograph.
    • Damage caused by Earthquake
      • Landslides
      • Buildings collapse
      • Power Lines
      • Tsunamis
    • Waves
      • What are earthquake waves called?
      • Seismic waves.
      • What two types of seismic waves are there?
      • Body and Surface Waves
      • What two types of body waves are there?
      • P Waves and S Waves
    • Body Waves
      • How do P waves travel?
      • Solid, Liquid, and Gas, and through the Body Of Earth
      • How do S waves travel?
      • Only through Solid
      • Which move faster?
      • P Waves
    • Elastic Rebound
      • A mechanism used by Geologists to explain Earthquakes and Surface ruptures, seen when deep faults break through Earth’s surface.
    • The Tohoku Earthquake
      • This quake occurred at :
      • March 11, 2o11
      • This quake occurred
      • Towards Northeast part of Honshu, Japan
      • The magnitude of this quake was
      • 9.0
    • Effects on the environment/earth
      • Pacific Plates moved 20m westward
      • Shifted on Earth’s axis about 6.5 inches
      • Somehow caused the Planet to rotate just a little bit faster, shorting the day about 1.8 millions of a second
    • Effects on the People of Japan
      • Thousands were dead
      • Thousand houses were destroyed
      • Lack of power and water
    • Effects on the Economy of Japan
      • Production is slowly declining
      • Thousands of houses were destroyed
      • Factories are in un-workable conditions
    • GPS Sensors
      • One interesting fact about this earthquake is that it moved several GPS sensors. This will require … resetting GPS because of japan
      • How does elastic rebound explain this movement? Ruptures result to strong ground shaking.
    • Tsunamis
      • What is a tsunami?
      • A series of waves caused by an earthquake or other disturbances.
      • How do tsunami waves appear at sea?
      • When undersea earthquakes disrupt water surfaces
      • How high can tsunami waves be?
      • Between 30 to 50 feet they can reach up to 100-300 feet
      • How fast can tsunami waves move?
      • Anywhere from 3omph to about 500 mph
    • Websites Used
      • http://www.diigo.com/user/richardsj/earthquake