Parameter Tree:
EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > PERIGLACIAL PROCESSES

Definition:
Of, or pertaining to, the outer perimeter of a glacier, particularly to the
fringe areas surrounding the great continental glaciers of the geologic ice
ages. Thus, periglacial weathering is said to have produced certain
characteristic
land forms.


Reference:
American Meteorological Society Glossary of Meteorology Online
http://amsglossary.allenpress.com/glossary