Historical Shoreline Position Change for the Mainland Beach in Harrison County, Mississippi

by Mark R. Byrnes, Louisiana State Univ, Baton Rouge, United States,
Matteson W. Hiland, Louisiana State Univ, Baton Rouge, United States,
Randolph A. McBride, Louisiana State Univ, Baton Rouge, United States,

Document Type: Proceeding Paper

Part of: Coastal Zone '93


Historical shoreline position change (1851/52 to 1986) associated with the mainland beach in Harrison County, Mississippi, are controlled by engineering activities associated with beach replenishment and harbor constructions since 1951. Long-term trends illustrate net progradation since 1851/52 whereas short-term trends (1951 to 1986) show net retreat at a rate of 0.5 m/yr. Although harbor entrances that act as littoral barriers segregate the beach into geomorphic zones, temporal variability in shoreline position is governed by beach replenishment activities rather than structural boundaries. This suggests that cross shore processes have greater influence on shoreline response than longshore transport.

Subject Headings: Shoreline protection | Beach protection and nourishment | Littoral drift | Coastal management | Transportation engineering | Coastal processes | Beaches | Mississippi | United States

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