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Oceanography:Waves

Oceanography:Waves. Leone Vorster. What A re They?. Waves are actually energy. Energy, not water, moves across the ocean's surface Tsunamis result when underwater earthquakes and volcanic eruptions disrupt the water's surface A wave's size and shape reveals its origins

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Oceanography:Waves

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  1. Oceanography:Waves Leone Vorster

  2. What Are They? • Waves are actually energy. Energy, not water, moves across the ocean's surface • Tsunamis result when underwater earthquakes and volcanic eruptions disrupt the water's surface • A wave's size and shape reveals its origins • No two waves are identical, but they all share common traits

  3. Ocean Wave Video

  4. Traits of Ocean Waves • Crest: The highest part of the wave above the still-water line. • Trough: The lowest part of the wave below the still-water line • Wave Height:The vertical distance between the crest and the trough.  • Wavelength: The horizontal distance between each crest or each trough.   

  5. Traits of Ocean Waves • Still-Water Line:The level of the ocean if it were flat without any waves. • Wave Period:The time it takes for two successive waves to pass a particular point. • Wave Frequency:The number of waves that pass a particular point in a given time period. • Amplitude:The amplitude is equal to one-half the wave height or the distance from either the crest or the trough to the still-water line.

  6. Wave Anatomy

  7. Wave Size • Beaufort Wind Force Scale • The size of a wave depends on: • The distance the wind blows (over open water) which is known as the "fetch” • The length of time the wind blows • The speed of the wind. • The greater these three, the larger the wave.

  8. 3 Most Dangerous Waves • Cyclops (remote south coast Western Australia)

  9. 3 Most Dangerous Waves • Teahupoo (Tahiti)

  10. 3 Most Dangerous Waves • Shipsterns(Tasmania, Australia)

  11. Extra Wave Information • Wave Simulator • Enchanted Learning – Tsunami • Powerful Ocean Waves Video • Ocean Waves – Sustainable Energy

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