Slide 1: Longshore Current/Longshore Drift
The longshore current is a current that runs parallel to the
shoreline and is powered by breaking waves. Longshore
drift is the movement of sediment along the shoreline.
Slide 2: Island Rollover
Slide 3: Morris Lighthouse
Slide 4: Morris Lighthouse - located on Morris Island until 1940s
Slide 5: Sand Dunes
Slide 6: Sand Dunes
Slide 7: Sand Dunes
Slide 8: Groin
North
South
Slide 9: Charleston
Harbor Jetties
Slide 10: Seawall
Slide 11: Seawall
Slide 12: Seawall
Slide 13: Seawall
Slide 14: Seawall
Slide 15: Beach Renourishment
Slide 16: Beach Renourishment
Slide 17: Beach Renourishment
Slide 18: Beach Nourishment - Note coarse artificial fill
dredged from offshore
Slide 19: Beach Nourishment - Note coarse artificial fill
dredged from offshore
Slide 20: Seasonal Change - Sediments are deposited
offshore in the winter due to scouring by strong wave
action, and then get pushed back onshore during summer
due to gentle waves
Slide 21: Minor storm event at Folly Beach - Fall 2009
Slide 22: Minor storm event at Folly Beach - Note erosion
Slide 23: Minor storm event at Folly Beach
Slide 24: Minor storm event at Folly Beach - Note
sediments washed over vegetation
Slide 25: Catastrophic storm event - Hurricane Hugo
devastates Folly Beach
Slide 26: Catastrophic storm event - Hurricane Hugo
devastates Folly Beach
Slide 27: Catastrophic storm event - Hurricane Hugo
devastates Folly Beach
Slide 28:
Catastrophic
storm event Hurricane Hugo
devastates
Charleston
Slide 29: Topsail Island, NC - Before Hurricane Fran hits (July 1996)
U.S. Geological Survey
Slide 30: Topsail Island, NC - After Hurricane Fran hits (Sept. 1996)
U.S. Geological Survey