A form of tabular berg found in the Arctic Ocean, with a thickness of 30 to 50 m and from a few thousand square m to 500 square km in area. Ice islands often have an undulating surface, which gives th
em a ribbed appearance from the air.
Sea ice terminology that describes an accumulation of broken river ice or sea ice which is not moving, due to a physical restriction and its resistance to pressure.
(1) Accumulation of shuga including ice cakes, below ice cover. (2) Broken ice in a river which causes a narrowing of the river channel, a rise in water level and local floods.
1.An accumulation of broken river ice caught in a narrow channel. Ice jams during freeze-up are quite porous, whereas breakup jams may comprise solid flows, frequently producing local floods during a
spring breakup. 2.Fields of lake or sea ice thawed loose from the shores in early spring and blown against the shore, sometimes exerting great pressures.
The accumulation of ice at a specific location along a stream channel. Can cause the reduction of stream flow down stream of the obstruction and flooding upstream.
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.
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.
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
.
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 lev
el.