Immediate report of Victoria University of Wellington Antarctic Expedition 1989-90: VUWAE 34
[figures]
Figure 2 Time evolution of the transmission of the ice (a) at the UV wavelengths 250 nm (●), 280 nm (∆), 300 nm (O), 350 nm (▲), and 400 nm (□), and (b) at visible wavelengths of 500 nm (O), 600 nm (□), and 700 nm (∆).
Figure 3 Depth dependent profiles for (a) temperature, (b) salinity, and (c) density of sea ice. Triangles and circles correspond to data of the 3 and 13 November respectively. In the case of the temperature the plot shows the highest values recorded up to the date in question which were recorded on the 3 and 9 November.
Figure 4 The estimated 300 nm flux at the base of the sea ice at Palmer Station during the 1988 season (upper curve), and before the appearance of the ozone hole (tower curve). The dashed lines indicate seasonal periods for which we have no direct measurements of the ice transmission. The net yearly dose is given by the areas under the curves.