Vorticity and Divergence of Surface Velocities Near Shore

摘要: Abstract The nearshore environment is complex, with many competing dynamical elements. Surface waves and edge (a form of surface wave trapped to the shore) can generally be separated from other forms motion because their fast propagation speeds. However, motions such as internal waves, shear density flows, isolated vortex pairs move at comparable A tool help separate these elements decomposition 2D flow into two parts, one nondivergent irrotational (solenoidal potential respectively). Here, an efficient algorithm for this separation developed applied, examples are examined data taken Duck, North Carolina, in 1997 part SandyDuck experiment. first example a fresher-water propagating downcoast (probably Chesapeake Bay). It seen that 1) wave-driven alongshore leads flow, generating “surge” offshore its wake; 2) i...