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8a. NAME OF FUNDING/ SPONSORING ORGANIZATION (Continued). 



US Army Corps of Engineers 



National Oceanic and Atmospheric Administration; 



Division of Research and Statistical Services, State of South Carolina 



8c. ADDRESS OF FUNDING/SPONSORING ORGANIZATION (Continued). 



Washington, DC 20314-1000; 

 Rockville, MD 20852; 

 Columbia, SC 29201 



19. ABSTRACT (Continued). 



geomorphic regions. The technique allows quantification of shoreline change in an onshore- 

 offshore direction. Pronounced alongshore changes, such as often occurs at inlets or capes 

 were examined using manual techniques to measure areal changes. Results are presented for 

 the entire Atlantic coast from Tybee Island, Georgia to Cape Fear, North Carolina, in both 

 graphic and tabular format. Erosion and accretion were variable spatially and temporally 

 throughout the period of record. Results show that long-term erosion (>1 m/year) predomi- 

 nated throughout the region of coast fronted by barrier islands. Mainland beaches, such as 

 those along the "Grand Strand" were relatively stable. In both regions, erosion rates were 

 most variable and greatest in the vicinity of inlets. 



A variety of factors were compared with the shoreline change data to determine the 

 cause for measured patterns of erosion and accretion. Proximity to inlets was a major cause 

 for variable erosion present along the barrier island coastline. Lack of inlets could also 

 be a major reason for stability of "Grand Strand" beaches, along with the shallow depth to 

 less erodible pre-Holocene sediments. Human impacts in the coastal zone had localized mea- 

 surable effects on erosion/accretion patterns. Maximum wave height also correlated well 

 with erosion, suggesting that susceptibility to storms was an important factor in determin- 

 ing shoreline stability. Other factors, such as nearshore bathymetry and shoreline orienta- 

 tion showed little effect on shoreline changes. 



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