Polarization-dependent measurements of light scattering in sea ice

David R. Miller; Mary S. Quinby-Hunt; Arlon J. Hunt

doi:10.1117/12.190045

26 October 1994 Polarization-dependent measurements of light scattering in sea ice

David R. Miller, Mary S. Quinby-Hunt, Arlon J. Hunt

Proceedings Volume 2258, Ocean Optics XII; (1994) https://doi.org/10.1117/12.190045
Event: Ocean Optics XII, 1994, Bergen, Norway

Abstract

We have developed a bistatic, polarization-modulated nephelometer for making in situ measurements of angle- and polarization-dependent light scattering in sea ice. The instrument sits directly and noninvasively on the surface of the sea ice, and can also be used for studying scattering in seawater. A visible laser beam is directed into the medium and the scattered light is detected by the analyzer optics. Both laser and detector angles can be varied. The technique of ac polarimetry is used to accurately obtain phase function and polarization information of the scattered light. This instrument was tested by scattering from monodisperse polystyrene (latex) spheres in the laboratory. Results of Mie calculations are in good qualitative agreement with scattering measured in the laboratory. This instrument was used to measure the angle- and polarization-dependent scattering in sea ice at Pt. Barrow, Alaska May 1994. Preliminary findings indicate a large polarization signal associated with the orientational ordering of the sea ice crystallites.

Citation Download Citation

David R. Miller, Mary S. Quinby-Hunt, and Arlon J. Hunt "Polarization-dependent measurements of light scattering in sea ice", Proc. SPIE 2258, Ocean Optics XII, (26 October 1994); https://doi.org/10.1117/12.190045

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