| Term: | Fern |
| Definition: | Old snow which has been transformed into a dense material. Firn is characterized by the fact that: (a) the particles are to some extent joined together, but that (b) the air interstices still communicate with each other. (a) distinguishes it from snow and (b) from ice. |
| Term: | Fern |
| Definition: |
Old snow which has been transformed into a dense material. Firn is characterized by the fact that: (a) the particles are to some extent joined together, but that (b) the air interstices still communicate with each other. (a) distinguishes it from snow and (b) from ice. SPRI
GCW |