Internal Structure
The blocks making up pressure ridges are mostly from the thinner ice floe involved in the interaction, but it can also include pieces from the other floe if it is not too thick. In the summer, the ridge can undergo a significant amount of weathering, which turns it into a smooth hill. During this process, the ice looses its salinity (as a result of brine drainage). This is known as an aged ridge. A consolidated ridge is one whose base has undergone complete freezing. The term consolidated layer is used to designate freezing up of the rubble just below the water line. A keel's depth of an ice ridge is much higher than its sail's height - typically about four times. The keel is also 2-3 times wider than the sail.
Read more about this topic: Pressure Ridge (ice)
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