EOS 110 Lecture Notes - Lecture 7: Intertidal Zone, Coast Lines, Wave Power
25 Oct 2016
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Document Summary
2 feet higher in the future ~ negative effects. Polar ice caps melting would raise sea levels. Coast lines shrinking - from thousand of years ago. Shoreline - from coastline to lowest tide (water"s edge) will always be moving. Backshore - high shore line up to coastline. Foreshore - intertidal zone (productive and diversity) exposed once or twice a day. Nearshore is where the lowest tides are (out to where breakers form) Offshore - more seaward out to open ocean. Beach face - gets uncovered as water moves. Sand particles moving down the beach (longshore drift) Creates sea arches and sea stacks - wave energy. Sand is transported along coast - moved into canyons. In the path of hurricanes (eastern us coast) = ocean beach face moves & ripped up by storm = actually unstable. Eustatic (=sea) sea level change is when global changes occur in sea level. Also because temperature of water is constantly changing.
