title: Optical measurement of rates of dissipation of temperature variance due to oceanic turbulence.
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.
authors: D J
authors: DJ
authors: Bogucki
authors: J A
authors: JA
authors: Domaradzki
authors: C
authors: C
authors: Anderson
authors: H W
authors: HW
authors: Wijesekera
authors: R V
authors: RV
authors: Zaneveld
authors: C
authors: C
authors: Moore