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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 12 — Jun. 11, 2007
  • pp: 7224–7230

Optical measurement of rates of dissipation of temperature variance due to oceanic turbulence

D. J. Bogucki, J. A. Domaradzki, C. Anderson, H. W. Wijesekera, J. R. V. Zaneveld, and C. Moore  »View Author Affiliations


Optics Express, Vol. 15, Issue 12, pp. 7224-7230 (2007)
http://dx.doi.org/10.1364/OE.15.007224


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Abstract

Inhomogeneities in the refractive index induced by temperature fluctuations in turbulent flows have the effect of scattering light in near-forward angles. We have developed a method that extracts the rate of Temperature Variance Dissipation (TVD) and its spectrum from the properties of light scattering and have built an instrument - Optical Turbulence Sensor (OTS) - that implements the method. OTS uses a linear wavefront sensing Hartmann array and allows for nearly instantaneous measurements of temperature variance in turbulent flows. The instrument has been tested in an situ experiment carried out from a drifting vessel at a site off the coast of Newport, Oregon. Here we compare the temperature variance measured by OTS and its spectra with both theoretical predictions and with spectra obtained from a fast thermistor sensor.

© 2007 Optical Society of America

OCIS Codes
(010.7060) Atmospheric and oceanic optics : Turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and ocean optics

History
Original Manuscript: April 4, 2007
Revised Manuscript: May 22, 2007
Manuscript Accepted: May 23, 2007
Published: May 29, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Citation
D. J. Bogucki, J. A. Domaradzki, C. Anderson, H. W. Wijesekera, R. V. Zaneveld, and C. Moore, "Optical measurement of rates of dissipation of temperature variance due to oceanic turbulence," Opt. Express 15, 7224-7230 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-12-7224


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References

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