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Sketch of an internal wave propagating on the
seasonal thermocline in the coastal ocean. Blue contours indicate isotherms
(contours of constant temperature). The mixed layer is indicated by
the greenish-blue region above the first isotherm, the thermocline by the
crowding of isotherms at mid-depth. The slicks on the surface are produced
by the convergence of water above the wave troughs in the mixed layer.
Total water depth of the example shown is approximately 100 m. Three animations of internal waves are available. The first two are provided for comparison with surface seiches, the third animation shows the type of internal wave found in the open sea: |
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