Accession Number : ADA189307

Title :   Microwave and Structural Properties of Saline Ice,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Gow, Anthony J ; Arcone, Steven A ; McGrew, Seth G

PDF Url : ADA189307

Report Date : Oct 1987

Pagination or Media Count : 39

Abstract : The structure and salinity characteristics of saline ice slabs removed from ice sheets grown in an outdoor pool have been studied and related to the complex relative dielectric permittivity measured with free-space transmission techniques at 4.80 and 9.50 GHz. The saline ice closely simulated arctic sea ice in its structural and salinity characteristics, which were regularly monitored in a number of ice sheets grown during the winters of 1983-84 and 1984-85. In-situ transmission measurements at similar frequencies were also made on the ice sheets themselves using antennas located above and beneath the ice. The slab measurements were made during warming from -29 to -2 C on slabs grown during the winter of 1983-84 (4.75 GHz) and during a warming and cooling cycle over a slightly larger temperature range on slabs grown during the winter of 1984-85 (4.80 and 9.50 GHz). Keywords: Dielectric properties; Microwave properties; Sea ice; and Structural properties.

Descriptors :   *DIELECTRIC PROPERTIES, *ELECTROMAGNETIC PROPERTIES, *SALINITY, *SEA ICE, ANTENNAS, ARCTIC OCEAN, COOLING, CYCLES, HEATING, ICE, MEASUREMENT, MICROWAVES, SHEETS, SIMULATION, STRUCTURAL PROPERTIES, TRANSMITTANCE

Subject Categories : Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE