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Abstract:
The evolution of waves, currents, and bathymetry on a natural beach is being observed during the SandyDuck field experiment on the North Carolina coast. Pressure gages, current meters, and sonar altimeters were deployed in July 1997 on a two-dimensional grid extending 370 m from near the shoreline to about 5 m water depth and spanning 200 m along the coast. The grid is large enough to sample significant bathymetric inhomogeneities and their effects on wave evolution and circulation. Data have been acquired nearly continuously for more than 3 months (Aug - Nov 1997) and data return is greater than 97%. Significant processing is performed in near-real time, and maps of nearshore wave heights and directions, bathymetry, mean flows, and setup every 3 hours for 120 days have been produced. The spatially extensive instrument arrays will allow quantitative investigations of sea and swell, edge waves, shear waves, alongshore inhomogeneous circulation, and changing morphology.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. 1 Sep 94-31 Aug 97 |
| Pages: |
6 |
| Report Date: |
15 JAN 1999 |
| Contract Number: |
N00014-94-1-1185 |
| Report Number: |
A134953 |
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