PubMed ID12869758
Published Date2003-07-18
JournalScience (New York, N.Y.), 2003-07-18, Volume 301 Find other publications in this journal
Author Info
  • Scripps Institution of Oceanography, La Jolla, CA 92093-0213, USA. drudnick@ucsd.edu

Abstract

The cascade from tides to turbulence has been hypothesized to serve as a major energy pathway for ocean mixing. We investigated this cascade along the Hawaiian Ridge using observations and numerical models. A divergence of internal tidal energy flux observed at the ridge agrees with the predictions of internal tide models. Large internal tidal waves with peak-to-peak amplitudes of up to 300 meters occur on the ridge. Internal-wave energy is enhanced, and turbulent dissipation in the region near the ridge is 10 times larger than open-ocean values. Given these major elements in the tides-to-turbulence cascade, an energy budget approaches closure.