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Unformatted text preview: Coastal Storms Review: Tidal bulges (lunar) moon closer to earth so lunar tide-producing force greater than that of sun two tidal bulges two high tides, 12 hours apart high tide, flood tide, seawater moves on shore low tide, ebb tide, seawater moves offshore Tidal patterns diurnal o one high tide/one low tide per day semidiurnal o two high tides/ two low tides per day o tidal range about same mixed o two high tides/ two low tides per day o tidal range different Spring/Syzygy everything is in alignment, amplifying tidal pull Neap/Quadrature moon and sun are at right angles to each other Tides in coastal water tidal bore in low-gradient rivers Clicker Questions: 1. A location with two nearly equal high and low tides a day is said to have this kind of tide semidiurnal 2. A rising or incoming tide is called the flood tide 3. These tides possessing the lowest amplitude over a fortnight occur as a result of the quadrature of the sun and the moon neap tide 4. Why are the spring tides highest when the moon is near perigee? the moon is closer to the earth, so gravitation force is greater COASTAL STORMS: extratropical storms (noreasters) tropical storms (hurricanes) birthplace and origin; fuel size and wind energy damage- winds, surge, precipitation...
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This note was uploaded on 08/30/2010 for the course GEOL 120 taught by Professor Arthurctrembanis during the Spring '10 term at University of Delaware.
- Spring '10