Parameter Tree:
EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE DEFORMATION

Definition:
Ice that has been squeezed together, and in places, forced upwards
and downwards. Some subdivisions of deformed ice are rafted ice, ridged
ice, and hummocked ice.


Reference:
Canadian Ice Service - Environment Canada
http://www.cis.ec.gc.ca/manice/chp1_eng.htm