Ice Volcanism on Ariel

H. J. MELOSH, D. M. JANES
1989 Science  
is no further turbidity development and (ii) the observed order of magnitude change in turbidity of early spring is reproduced. It is found that the springtime-enhanced UV dose under the ice is independent of these limits. Using the data developed above, we have calculated the temporal development of UV radiation at 305 nm transmitted through sea ice without a snow cover. Two cases are illustrated in Fig. 1 . The lower curve shows the decrease in transmitted UV light that accompanies the
more » ... ompanies the increase in ice turbidity associated with the springtime warming. The upper curve was generated assuming the changing atmospheric ozone content calculated in (1). Thus, Fig. 1 demonstrates a 20-fold increase in under-ice UV radiance in early October resulting from the coincidence of the presence of the ozone hole and the period of relatively high transparency for sea ice. This clearly has implications for organisms living within and under the ice.
doi:10.1126/science.245.4914.195-a pmid:17787879 fatcat:43hcekhtrjflxgwoxykkyxfpnu