Virtual seafloor reduces internal wave generation by tidal flow.

نویسندگان

  • Likun Zhang
  • Harry L Swinney
چکیده

Our numerical simulations of tidal flow of a stratified fluid over periodic knife-edge ridges and random topography reveal that the time-averaged tidal energy converted into internal gravity wave radiation arises only from the section of a ridge above a virtual seafloor. The average radiated power is approximated by the power predicted by linear theory if the height of the ridge is measured relative to the virtual floor. The concept of a virtual floor can extend the applicability of linear theory to global predictions of the conversion of tidal energy into internal wave energy in the oceans.

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عنوان ژورنال:
  • Physical review letters

دوره 112 10  شماره 

صفحات  -

تاریخ انتشار 2014