Other types of waves powerpoint

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Other types of waves powerpoint

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

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