M.R. DRINKWATER
Fig. 8. Classified weekly mean SIRF A images in the ERS-l scatterometer mode, for a June 16 (i.e.,
days 168-173), and b July 31 (i.e., days 213-218),1992. (ERS-l Scatterometer data copyright ESA)
Table 3. Summary of winter Cband EScat backscatter ranges
(9 = 40° incidence) of main categories of sea ice in the Weddell
Sea
Ice type
Icebergs
Multiyear/pancakes
Rough first-year
Smooth first-year
Nilas
Backscatter range
-6.0~ cr"~0.0
-11.0 ~ cr" < -6.0
-14.0 ~ cr" < -11.0
-20.0 ~ cr" < -14.0
-32.0 ~ cr" < -20.0
Fig. 8. Classified weekly mean SIRF A images in the ERS-l scatterometer mode, for a June 16 (i.e.,
days 168-173), and b July 31 (i.e., days 213-218),1992. (ERS-l Scatterometer data copyright ESA)
Table 3. Summary of winter Cband EScat backscatter ranges
(9 = 40° incidence) of main categories of sea ice in the Weddell
Sea
Ice type
Icebergs
Multiyear/pancakes
Rough first-year
Smooth first-year
Nilas
Backscatter range
-6.0~ cr"~0.0
-11.0 ~ cr" < -6.0
-14.0 ~ cr" < -11.0
-20.0 ~ cr" < -14.0
-32.0 ~ cr" < -20.0