Surface Waves and Forced Group Response Observed with Lrpads
نویسنده
چکیده
A novel 32-element Doppler sonar system was deployed to observe waves and currents over a km-scale area of the open ocean. The measurements cover a pie-shaped area about 1.5 km in range by 45 degrees azimuth, with 7.5 m by 1.3 degree resolution. Acoustic sampling every 2.5 seconds over the entire area provides detailed directional wave spectra and simultaneously the response of the underlying flow. The Eulerian response cancels the estimated Stokes drift at the surface, resulting in no net displacement of surface tracers (e.g. bubble clouds) by individual wave groups.
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