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3/31 ERS102 - weather pattern o Waves Produced by Wind...

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3/31 Coastal Processes and Hazards Important Concepts o Daily, annual, and long-term processes that affect the coast o Coastal erosion- cause, issues Tidal Flats o Low, variety of grain sizes. Formed in a high tidal range o Examples: Mussel Bar Coarse-grained Sand Flat Maine Coast o Cliffed Coast o Island-Bay Coast o Indented Shoreline o Arcuate Embayment Daily Processes o Wind Affects the Coastal Zone By: Moving sediment to create dunes Interacting with water to create waves Key terms Direction : determined by local weather patterns Speed : determined by barometric pressure differences Fetch : determined by distance wind blows over Duration : how long wind blows determined by local
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Unformatted text preview: weather pattern o Waves Produced by: Wind- Daily Process Atmospheric conditions Earthquakes (tsunami) Tides (tidal bore) Breaking Waves Interaction of wave and the bottom Transport sediment Rip Currents Strong currents perpendicular to the coast are called rip currents o Tides Regular rise and fall of ocean water Earth spins beneath the two bulges, producing two high tides each day for most places on earth Spring and Neap tides Syzygy- moon +sun aligned Moon’s gravitational attraction greater because moon is closer- Moon 2x sun Two extreme highs and lows per lunar cycle...
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  • Spring '08
  • Kelley
  • Tide, Neap tides Syzygy- moon, Currents Strong currents, tides Syzygy- moon, Tides Regular rise, high tidal range

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