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Other types of waves powerpoint
 

Other types of waves powerpoint

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    Other types of waves powerpoint Other types of waves powerpoint Presentation Transcript

    • OTHER TYPES OF WAVES
    • BREAKERS
    • BREAKERS spilling breaker surging breaker plunging breakers
    • BREAKERS VIDEOS http://www.youtube.com/watch?v=C10qD7fKQXI http://www.youtube.com/watch?v=QPxLs0Cv4zY
    • LONGSHORE CURRENT
    • RIP CURRENTS
    • TSUNAMIS
      • also called seismic sea waves
      • should not be called tidal waves
      • result from sudden movement of ocean bottom – earthquake, volcano, landslide
    • TSUNAMIS
    •  
    • TSUNAMIS
      • travel hundreds
      • of miles per hour
      • since water is
      • so deep at sea,
      • undetected by
      • boats
      • when hit shallow water at coast, build up a
      • wall of water
      • can be many feet tall
      • tsunamis can be extremely damaging
      • ex: December 26, 2004 – Indian Ocean – 230,000 died – waves up to 98 ft. tall
      • ex: March 11, 2011 – Japanese Tsunami – 20,000 died
    •  
    •  
    • http://www.youtube.com/watch?NR=1&v=5-zfCBCq-8I
      • most common in Pacific Ocean
      • there is an international system of seismographs to detect earthquakes, etc. and warn of possible tsunamis
    •  
    •  
    • mangroves may help protect against tsunamis
    • STORM SURGE
      • surface waves caused by storm winds
      • strong winds pile up water on coast – causes sea level to rise temporarily
      • up to 20 feet higher than normal
      • floods low lying areas
      • especially damaging if occurs with high tide
    • http://www.nhc.noaa.gov/surge/
    •  
    • ROGUE WAVES
      • also called freak waves
      • occur when two or more wave crests add together to form a short-lived very high wave