Optical Properties of South Pole Ice at Depths from 140 to 2300 Meters
نویسنده
چکیده
Depth and wavelength dependence of absorption and scattering coefficients at the South Pole AMANDA site were mapped with pulsed and D.C. light sources. The contribution of air bubbles to scattering decreases with depth and disappears at 1.4 km; at greater depths scattering by dust dominates. Peaks in scattering at several well-defined depths are attributed to peaks in dust concentration and are consistent with peaks in muon attenuation with depth. The magnitudes of the scattering and absorption are roughly consistent with predictions of the He-Price theory. At depths 1.4 to 2.3 km the optical properties of the ice are suitable for a 1-km high-energy neutrino observatory, except for a 100-m thick dust band at 2.1 km.
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