| Term: | Extensive discontinuous permafrost |
| Definition: |
(1) (North American usage) permafrost underlying 65 - 90% of the area of exposed land surface (2) (Russian usage) permafrost underlying 70 - 80% of the area of exposed land surface. NSIDCCryosphere
1. (North-American usage) Permafrost underlying 65 to 90 percent of the area of exposed land surface; 2. (Russian usage) Permafrost underlying 70 to 80 percent of the area of exposed land surface. IPAPermafrost GCW |