Experimental and theoretical study of skylight polarization transmitted through Snell's window of a flat water surface

Shai Sabbah, András Barta, József Gál, Gábor Horváth, Nadav Shashar

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

The celestial polarization pattern may be scrambled by refraction at the air-water interface. This polarization pattern was examined in shallow waters with a submersible polarimeter, and it was calculated by using land measurements ("semiempirical predictions") and models of the skylight polarization. Semiempirically predicted and measured e-vector orientations were significantly similar. Conversely, predicted percent polarization was correlated but lower than measurements. Percent polarization depended on wavelength, where at high sun altitudes maximal percent polarization generally appeared in the UV and red spectral regions. The wavelength dependency of polarization may lead to differential spectral sensitivity in polarization-sensitive animals according to time and type of activity.

Original languageEnglish
Pages (from-to)1978-1988
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume23
Issue number8
DOIs
StatePublished - Aug 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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