Field determination of the densities of lake ice sheets

A method of calculating the mean density for a lake ice sheet and estimating the mean density of the white ice component of such a sheet makes use of the buoyancy equation for floating ice in the form urn:x-wiley:00243590:media:lno19762140602:lno19762140602-math-0001 where p ′ and h ′ are mean density and thickness respectively and the subscripts are ice ( i ), water ( w ), and ( s ). The technique requires the measurement of snow density on the lake. Mean ice sheet densities of 0.89 and 0.85 g cm ‒3 and mean white ice densities of 0.84–0.87 are reported from two lakes.