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[watch]
Term: Ice keel Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary

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Definition: From the point of view of the submariner, a downward-projecting ridge on the underside of the ice canopy; the counterpart of a ridge; ice keels may extend as much as 50 meters (55 yards) below sea level.  NSIDCCryosphere 

From the point of view of the submariner, a downward-projecting ridge on the underside of the ice canopy-the counterpart of a ridge. Ice keels may extend as much as 165 ft (50 m) below sea level.  WMOSeaIce 

Sea ice terminology which describes a downward-projecting ridge on the underside of the ice canopy; the submerged counterpart of a ridge. Ice keels may extend to as much as 50 metres below the surface.  ECCCanada 

The submerged counterpart of an ice ridge.  AMSglossary 

From the point of view of the submariner, a downward-projecting ridge on the underside of the ice canopy; the counterpart of a ridge. Ice keels may extend as much as 50 m below sea level.  SPRI 

 GCW 
Examples: