Download or read book Cold Regions Science and Engineering. Part Ii. Physical Science. Section B. the Physics and Mechanics of Snow as a Material written by HENRI. BADER and published by . This book was released on 1962 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snow is a porous. permeable aggregate of ice grains. The grains can be predominantly single crystals or close groupings of several crystals. The pores are filled with air and water vapor. In wet snow the grains are coated with liquid water. The characteristic property of snow is its inherent thermodynamic instability. Consequently most of the interesting physical parameters inevitably change with time. This process of change is called snow metamorphism.