Shear Velocity and Eolian Sand Transport on a Barrier Island

by S. A. Hsu, Louisiana State Univ, Baton Rouge, United States,
B. W. Blanchard, Louisiana State Univ, Baton Rouge, United States,



Document Type: Proceeding Paper

Part of: Coastal Sediments

Abstract:

Nearly 18 months of simultaneous measurements of atmospheric shear velocity, sand transport quantity, and beach erosion survey were made to investigate the rate of eolian sand transport on Isles Dernieres, a Louisiana barrier island. It is shown that these measurements are consistent with each other. There appears to be a net loss of sand from the NE to the SW and the Gulf of Mexico. It is also found that the drag coefficient can not be applied under sand transport conditions. A method is recommended to solve this problem for coastal applications.

Subject Headings: Sand (hydraulic) | Sandy soils | Sediment transport | Shear stress | Islands | Barrier islands | Transport rates | Louisiana | United States | Gulf of Mexico

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