Active layer
From WebRef.org
Jump to navigationJump to search- The surficial deposit that undergoes seasonal changes of volume, swelling when frozen or wet, and shrinking when thawing and drying. AGI
- A surface layer of ground, above the permafrost, that is frozen in the winter and thawed in the summer. Its thickness ranges from several centimeters to a few meters. AGI
Source: Dictionary of Mining, Mineral, and Related Terms
