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Term: Rafting Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary

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Definition: A process by which currents or winds push around thin ice so they slide over each other; also called finger rafting.  NSIDCCryosphere 

Pressure process whereby one piece of ice overrides another. Most common in new and young ice (cf. Finger rafting). Finger rafting is a type of rafting whereby interlocking thrusts are formed, each floe thrusting 'fingers' alternately over and under each other. Common in nilas and grey ice. Rafting plays an important role in increasing ice thickness within the Antarctic pack. It is the dominant dynamic mechanism whereby floes reach between about 0.4 and 0.6m thick in the early stages of ice development. Beyond this thickness, converging floes are more likely to form ridges than to raft.  ASPECT2012 

Pressure processes whereby one piece of ice overrides another. Most common in new and young ice.  WMOSeaIce 

Sea ice terminology describing the pressure process whereby one piece of ice overrides another. Most common in new and young ice.  ECCCanada 

Pressure process by which one floe overrides another; most commonly found in new and young ice. A type of rafting common in nilas whereby interlocking thrusts are formed - each floe thrusting "fingers" alternately over and under the other - is known as finger rafting.  SPRI 

 GCW 
Examples: