A RADIOMETER METHOD FOR DETERMINING THE THICKNESS OF SEA ICE

Authors
  1. Hartz, T.R.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
This paper considers the use of airborne radiometers to monitor emissions from sea ice at ultra-high frequencies and, in particular, examines the possibility of obtaining ice thickness information by this means under certain limiting conditions. Although the situation is complicated because of the heterogeneous nature of sea ice and by the present lack of accurate information on the electrical properties of the ice, it is known that radiation in the indicated frequency range can penetrate a significant distance in the ice. Consequently, for a positive thermal gradient with increasing depth, and for dielectric absorption properties that are either constant or also increasing with depth, it will be shown that the observable radiation should be a characteristic function of ice thickness and of observing frequency. Observations on several frequencies can then be expected to yield an estimate of ice thickness.
Report Number
1217 —
Date of publication
15 May 1971
Number of Pages
14
DSTKIM No
71-08777
CANDIS No
12122
Format(s):
Hardcopy

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