Abstract
Snow is a scattering-dominated medium whose scattering is independent of
wavelength at
. The attenuation of solar radiation in snow can be used to
infer the spectral absorption coefficient of pure ice, by reference to a known value at
.
The method is applied to clean Antarctic snow; the absorption minimum is at
,
and the inferred absorption coefficient is lower than even the lowest values of the
Antarctic Muon and Neutrino Detector Array (AMANDA) experiment on glacier ice: The absorption length is at least
, by
comparison with
for AMANDA and
from laboratory attenuation
measurements.
© 2006 Optical Society of America
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