Site pages
Current course
Participants
General
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Topic 12
Topic 13
Topic 14
Topic 15
Topic 16
Topic 17
Topic 18
Topic 19
Topic 20
Topic 21
Topic 22
Topic 23
Properties of sea ice
The physical properties of sea ice depend upon the a) salinity of sea water from which it forms,b) temperature,c) air-content or porosity, d)pressure,e)speed of ice formation,and f)age and history of the ice. As soon as the temperature of the sea surface reaches the freezing point, pure ice begins to form. At this stage, sea water is trapped among the ice crystals. On further cooling, the various salts present in the sea water crystallize gradually depending upon the temperature. For example, sodium sulphate (Na2SO4 10 H2O) crystallizes at -36.0oC and calcium chloride (CaCl2) crystallizes at -55.0oC (Ringer, 1928). |
Last modified: Friday, 16 March 2012, 6:09 AM