SDSU OCEANS 100 EXAM 3 LATEST UPDATE GRADED A+

SDSU OCEANS 100 EXAM 3 LATEST UPDATE GRADED A+ the coastal region (6 parts) 1) coast 2) offshore 3) beach 4) berm 5) notch 6) wave coast land extending inland as far as marine is seen; land adjacent to the beach affected by the ocean offshore extends from breakers to edge of continental shelf beach shore and nearshore; very active berm dry area at foot of coastal cliff; sand notch cave cut into sea cliff by waves wave-cut platform flat eroded bedrock at beach created by wave erosion effects of WAVE ENERGY excavates notches into rocks --- unstable cliff--- rivers and cliff erosion --- source of sand to the beach wintertime beach short, high waves; high energy; rocky beach and narrow berm; algae growth due to pollution summertime beach long, low waves; low energy; sandy beach and wide berm longshore current waves move at an angle and flow parallel coast; currents come from N to S; currents move left to right and wrap around coastline depositional coast flat coast b/c of passive margin; sediment comes from rivers; SUBMERGENT COAST; ex- deltas, barrier islands erosional coast tectonic uplift b/c active margin; marine terraces made from earthquakes; EMERGENT COAST; ex- cliffs, headlands, sea caves, arches, stacks Atlantic Coast depositional; passive margin; no plate boundary; shoreline rises and ocean migrates inland Pacific Coast erosional; active margin; plate boundary; shoreline rises and ocean does not migrate inland Gulf Coast below sea level, ocean migrates farthest inland causes of sea level change 1) climate change 2) plate tectonics cause of sea level change (climate change) global warming = sea levels rise ice age = sea levels drop cause of sea level change (plate tectonics) fast-spreading: