Experimental study of nonlinear harmonic generation by internal waves incident on a pycnocline

Experimental study of nonlinear harmonic generation by internal waves incident on a pycnocline Internal waves propagating in variable stratification exhibit nonlinear generation of harmonics. Here, synthetic schlieren is used to study a laboratory internal wave beam propagating from a uniformly stratified layer into a region of increased stratification (pycnocline) below a mixed layer. The results demonstrate the formation of harmonic (double-frequency) internal waves as the beam refracts into the pycnocline layer. For beam incidence angles <30° to the horizontal, harmonic internal waves are radiated back to the uniformly stratified layer. The harmonic wavenumber is approximately double the incident wavenumber, while its amplitude increases with the pycnocline buoyancy frequency gradient. Beams with larger incidence angles generate harmonics that are trapped within the pycnocline layer. In this case, the specific wavenumber of the trapped harmonic is determined by the normal modes of the stratification profile. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Experimental study of nonlinear harmonic generation by internal waves incident on a pycnocline

Loading next page...
Springer Berlin Heidelberg
Copyright © 2015 by Springer-Verlag Berlin Heidelberg
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial