active permafrost

active permafrost

[′ak·tiv ′pər·mə‚frȯst]
(geology)
Permanently frozen ground (permafrost) which, after thawing by artificial or unusual natural means, reverts to permafrost under normal climatic conditions.
References in periodicals archive ?
The focus of the UPCD project will be a field trial in an analogue site, namely the active permafrost of Devon Island, Canada