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Figure 8. Tide frequencies at selected points on 

 the South Carolina coast, based on hurricane 

 specifications (Myers 1975) 



changes in sea level. Sea level changes can be examined from two points of 

 view, eustatic rise and relative rise. Eustatic rise deals with worldwide 

 changes in sea level resulting from continental and alpine glacier advance and 

 retreat, thermal expansion and contraction of ocean waters, and global scale 

 changes in ocean basin dimensions. Relative rise also incorporates local 

 shoreline movements due to tectonics or subsidence, which influence the per- 

 ception of water levels along the coastline. 



18. Several geological investigations have shown a steady rise in sea 

 level for the last 15,000 years (e.g., Millman and Emery 1968). This corre- 

 lates with continued climatic warming since maximum glacial ice advance during 



22 



