SOME PHYSICAL PROPERTIES OF SEA ICE. II

Abstract

Some properties of annual sea ice at mid-temperate latitudes are investigated. It is found that the salinity is comparable to, and the density much lower than, annual arctic sea ice. Permeability to air flow compares favorably to calculations based on the model of sea ice of Anderson and Weeks (1958). Small sample ring tests of ultimate tensile strength yield values ranging from 9.5 to 24.8 kg cm⁻²at test temperatures of −3.6 °C to −17.2 °C. Tensile strength appears to depend on crystal size rather than on brine content.