Snow is a porous material with a rich variety in density and micro structure. Basically it is made of small brittle ice grains bonded by so-called grain necks. In natural environments it mainly exists under high homologous temperatures in regard to its melting temperature. Therefore in snow diffusion, recrystallisation processes and sintering processes take place over time. These mechanisms also affect the compaction process of snow depending on the deformation and sintering rates. A 1-D plasticity model of snow is introduced. It was adapted to experimental data and the results are presented.
