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| English | Russian |
| active layer | сезонно-протаивающий слой |
| active layer | деятельный слой (грунта Also known as annually thawed layer, depth of thaw, and depth to permafrost, this is the highly mobile layer of soil, subject to periodic thawing, located above the permafrost in tundra regions such as Spitzbergen or Alaska, and ranging in depth from a few centimetres to 3 m.  answers.com Alexander Demidov) |
| active-layer glide | оползень деятельного слоя (многолетнемёрзлого грунта) |