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  • What is a seiche? - NOAAs National Ocean Service
    What is a seiche? A seiche is a standing wave oscillating in a body of water This animation shows a standing wave (black) depicted as a sum of two propagating waves traveling in opposite directions (blue and red)
  • What is a meteotsunami? - NOAAs National Ocean Service
    Meteotsunamis are large waves that scientists are just beginning to better understand Unlike tsunamis triggered by seismic activity, meteotsunamis are driven by weather events, such as fast-moving severe thunderstorms, squalls, or other storm fronts with a change in pressure The storm generates a wave that moves towards the shore, and it is amplified by a shallow continental shelf and inlet
  • NOS Site Index - NOAAs National Ocean Service
    What is Seaspeak? Why do scientists measure sea surface temperature? What is seaweed? What is a seiche? What are the Seven Seas? Do sharks hunt people? How long is the U S shoreline?
  • Do the Great Lakes have tides? - NOAAs National Ocean Service
    Wind and weather conditions on the Great Lakes may create a seiche, an oscillating wave which can be several feet high In many of the Great Lakes, the time period between the “high” and “low” of a seiche may be between four and seven hours
  • Tides and Water Levels - NOAAs National Ocean Service
    Gravity is one major force that creates tides In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J L , 1996) Newton’s law of universal gravitation states that the gravitational attraction between two bodies is directly proportional to their masses, and inversely proportional to the square of
  • What is a tsunami? - NOAAs National Ocean Service
    Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea They speed along as fast as jet planes As they near land, these waves rear up to great heights and can drown whole islands Historically tsunamis have been referred to as tidal waves, but that name is discouraged by oceanographers because tides have little effect on tsunamis
  • Tides and Water Levels: NOAAs National Ocean Service Education
    << Back This animation shows the relationship between the vertical and horizontal components of tides As the tide rises, water moves toward the shore This is called a flood current As the tide recedes, the waters move away from the shore This is called an ebb current The movement of water toward and away from the shore is illustrated by the movement of the green seaweed
  • cdn. oceanservice. noaa. gov
    Created Date 8 12 1999 12:12:18 PM
  • cdn. oceanservice. noaa. gov
    Created Date 8 12 1999 10:13:02 AM
  • Currents: NOAAs National Ocean Service Education
    << Back This animation shows the relationship between tides and currents As the tide rises, water moves toward the shore This is called a flood current As the tide recedes, the water moves away from the shore This is called an ebb current The movement of water toward and away from the shore is illustrated by the movement of the green seaweed Tidal currents that ebb and flood in opposite





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