From AMS Glossary
"The study of [ground movement caused by] intensive frost action and of permafrost, their causes and occurrences, and the engineering devices and practices which may be devised to overcome difficulties brought about by them." (from Glossary of Arctic and Subarctic Terms 1955).
Arctic, Desert, Tropic Information Center (ADTIC) Research Studies Institute 1955. Glossary of Arctic and Subarctic Terms. ADTIC Pub. A-105, Maxwell AFB, AL, . 90 pp.