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arXiv · 2007.02226

Spatial power spectrum of natural water turbulence with any average temperature, salinity concentration and light wavelength

Jinren Yao·Mohammed Elamassie·Olga Korotkova
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Abstract

The power spectrum of water optical turbulence is shown to vary with its average temperature $\left\langle T \right\rangle$ and average salinity concentration $\left\langle S \right\rangle$, as well as with light wavelength $\lambda$. This study explores such variations for $\left\langle T \right\rangle \in \left[ {0\ ^\circ\rm{C},30\ ^\circ\rm{C}} \right]$, $\left\langle S \right\rangle \in \left[ {0\ \rm{ppt},40\ \rm{ppt}} \right]$ covering most of the possible natural water conditions within the Earth's boundary layer and for visible electromagnetic spectrum, $\lambda \in \left[400\ nm, 700\ nm \right]$. For illustration of the effects of these parameters on propagating light we apply the developed power spectrum model for estimation of the scintillation index of a plane wave (the Rytov variance) and the threshold between weak and strong turbulence regimes.

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Jinren Yao, Mohammed Elamassie, Olga Korotkova. 2020-07-05. Spatial power spectrum of natural water turbulence with any average temperature, salinity concentration and light wavelength. https://doi.org/10.1364/josaa.399150

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