Abstract
Abstract : Sea ice in its many stages of growth from frazil to multi-year ice affects the optics of the polar regions. To understand how the optical characteristics are affected by the physical and biological characteristics of the ice we have developed and utilized several optical measurement techniques. Technical objectives of this effort included the development of an in-ice spectral radiometer for measurement of the diffuse attenuation coefficient. We also developed and calibrated an optical instrument for the measurement of frazil ice concentrations. The scientific objectives were to make in-ice measurements of the beam spread function (BSF) using an instrument developed under this grant, the spectral diffuse attenuation coefficient, and the diffuse attenuation coefficient of a beam source. These measurements are to study the effects of the anisotropic nature of sea ice on the directional optical properties and to be used in determining the asymptotic diffuse attenuation coefficient.
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