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Experiments in Fluids

, Volume 35, Issue 6, pp 653–665 | Cite as

Surface image velocimetry for measuring short wind wave kinematics

  • Xin Zhang
Original

Abstract

Techniques are developed here for determining the propagation speeds of short wind waves from surface slope images. The surface slope images are taken in experiments at three different wind-wave facilities in Heidelberg, Marseilles, and San Diego. Travel distances of wavelets of different scales are determined from image pairs captured within a very short time interval by both wavelet tracking and coherence analysis methods. It is shown, for the first time by direct measurements, that most of the short wind waves are dispersive.

Keywords

Wind Speed Particle Image Velocimetry Propagation Speed Short Wave Phase Speed 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This paper covers measurements from different experiments. The author is greatly indebted to all of the participants, especially Prof. B. Jähne and members of his research groups at both the University of Heidelberg and Scripps Institution of Oceanography. This work is supported by ONR (remote sensing) and NSF (OCE9811262 OCE0118028).

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.Scripps Institution of OceanographyUniversity of CaliforniaSan Diego, La JollaUSA

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