Ocean 100- Exam 3 (SDSU) Latest Version Graded A+

Ocean 100- Exam 3 (SDSU) Latest Version Graded A+ coast land extending inland as far as marine influence is seen offshore extends from breakers to edge of continental shelf beach shore and nearshore; very active (where waves break) berm dry area at the foot of coastal cliff (where the sand is and you put your towel) Berm floods when.... -very high tide -tsunami -storm swells/ breakers wave- cut platform flat eroded bedrock at beach, by wave energy notch cave cut into the sea cliff by wave energy near shore where breakers occur coastline line that separates beach from land sources of sand to the beach - continental erosion - rivers dumping sediment into the sea summertime beach -wave energy is low -sandy beach -wide berm wintertime beach -wave energy is high -rocky beach -narrow berm drift net movement of sand grains (longshore drift) longshore current movement of water in surf zone, parallel to the coast why does longshore current move water parallel to the coast -waves come at an angel -depends on where waves first start breaking -due to the winds where does the longshore current move in Southern California N-S how does sand get moved -rivers supply sediment -longshore currents carry sands -dump into submarine canyon what are the 2 types of coasts depositional coast and erosional coast depositional coast -not active -flat coast -subsidence (east/south coast) -deposit sediment -submerging coast (sinking) -deltas, barrier islands erosional coast -tectonic uplift (west coast) -active -plate boundary -ex. sunset cliffs -cliffs -headlands, sea caves, arches, stacks -emergent coast (rising) -marine terraces how are headlands, sea caves, arches, and