Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-01-19
Science 267:1802,1995
Astronomy and Astrophysics
Astrophysics
Replacement fixes figures. Submitted to Science. 7 pages LaTeX plus 2 PostScript figures (compressed, tarred, uuencoded)
Scientific paper
10.1126/science.267.5205.1802
The depth-dependence of bubble concentration at pressures above the transition to the air hydrate phase and the optical scattering length due to bubbles in deep ice at the South Pole are modeled using diffusion-growth data from the laboratory, taking into account the dependence of age and temperature on depth in the ice. The model fits the available data on bubbles in cores from Vostok and Byrd and on scattering length in deep ice at the South Pole. It explains why bubbles and air hydrate crystals co-exist in deep ice over a range of depths as great as 800 m and predicts that at depths below $\rm \sim$ 1400 m the AMANDA neutrino observatory at the South Pole will operate unimpaired by light scattering from bubbles.
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