Breaking Strength and Creep Expansion of Deposited Snow

Abstract

The breaking strengths of snow were measured by a new tester which had been made by the author, and were expressed as functions of density or hardness. One special merit of the apparatus is that they are useable even for new snow, and the strengths were easily measured to several grammes per cm². The creep expansion of snow was measured by using an optical level, and was expressed as a function of snow density, temperature, internal stress, and lapsed time. One point of the measurement is that the creep expansion rate did not become constant, hut was decreasing with time even several hours from the beginning of the test.