Modeling of Optical Beam Spread in Sea Ice

This two year theoretical investigation of the optical properties of first year sea ice yielded several important results: (1) beam spread function measurements provide an important constraint on inversion of optical data to obtain ice scattering properties; (2) several hundred optical path lengths...

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Bibliographic Details
Main Author: Mobley, Curtis D.
Other Authors: SEQUOIA SCIENTIFIC INC MERCER ISLAND WA
Format: Text
Language:English
Published: 1998
Subjects:
Snow
Ice and Permafrost
*RADIATIVE TRANSFER
*LIGHT TRANSMISSION
*SEA ICE
LIGHT SCATTERING
TRANSMITTANCE
ABSORPTION COEFFICIENTS
BRINES
FORWARD SCATTERING
DIFFUSION THEORY
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA343677
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA343677
Description
Summary:This two year theoretical investigation of the optical properties of first year sea ice yielded several important results: (1) beam spread function measurements provide an important constraint on inversion of optical data to obtain ice scattering properties; (2) several hundred optical path lengths can be required to approach the asymptotic radiance distribution for point light sources, even though the ice is highly scattering; (3) photon diffusion theory gives a reasonably good description of light propagation deep within sea ice and, more importantly, shows that sea ice scattering phase functions are highly peaked near the forward scattering direction; (4) classical radiative transfer theory is adequate for prediction of light propagation within sea ice, and (5) it is possible to begin with sea ice physical properties and proceed in a rigorous fashion to predict sea ice inherent and apparent optical properties.

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