PHYSICAL MEASUREMENTS OF SEA ICE.
Research and development rept., Feb-Mar 54, Mar-Apr 55,
NAVY ELECTRONICS LAB SAN DIEGO CALIF
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During the Winter 1954 Bering Sea Expedition and the Winter 1955 Bering Sea Expedition, measurements were made of the longitudinal plate-wave velocity. In 1954, the location of the ice sheet in which measurements were made was 60 deg 20 min N, 168 deg 38 min W and in 1955 the ice sheet, although variable in position during the several days measurements were being made, occupied the position 63 deg 05 min N, 166 deg 09 min W. In 1955, in addition to the measurement of the longitudinal plate-wave velocity, other physical properties of the ice which might be of scientific interest were measured. The investigation of other sea-ice parameters included 1 sampling profiles of density, temperature, salinity, air bubble, and crystal grain 2 measurement of the longitudinal wave velocity in ice rods 3 measurement of the frequency of air-coupled flexural waves to determine ice thickness and 4 resistivity measurements.