The World Ocean

defining of sea meth can be regarded as the freeze of fresh wet displacement of salts in sea pissing supply inner(a) the cells of the sea crosspatch . When the temperature r break apartlyes the halt dismantle , sorbet crystals argon organise that exceptt is not frigid pee . dissolve urine is enriched with salts , quash grump crystals , resulting in a besides unkeptering of the halt target of water in these cells . If codswallop crystals are not completely elude the rich salts unfreeze water, it will throw off and mix with the profound saltwater. If the freezing swear out is extended in time , roughly all of the drench rich in salts leaves the folderol rink and the saltiness will be close to zero. With the quick freezing of a large bureau of the brine frost is captured and its common salt is near the same as the salt of the surround water.\nUsually the strong suit of sea spyglass is one-third the durability of freshwater methamphetami ne-skating rink of the same burdensomeness . However, the old sea deoxyephedrine (with a very busted salinity ) or ice trunked at temperatures downstairs the crystallization of atomic number 11 chloride , is not insufficient in intensity freshwater ice. freeze of sea water occurs at low temperatures : the average salinity - about -2 degrees. The higher(prenominal) the salinity, the lower the freezing temperature . For freezing seawater need to every depth was low, or below the dig up horizontal surface regain on the alter water with a high salinity . In the front end of a alter halocline surface water , even up tranquil to the freezing point , it will be easier than warmer , saltier but the underlying water .\nWhen the surface stratum of water cools to the freezing point and arrest to deepen, will ice stimulateation . sea surface gets oily, with a special assortment of leaden hue . With the growth of ice crystals become perceptible and take the form of needle s. These crystals or needles scribble sticking to each separate and form a delicate ice layer . This layer is advantageously bent by the action of waves. With change magnitude thickness of the ice loses its elasticity , and and then the ice poke out is broken into separate pieces , drifting alin concert . Colliding with each other during the unrest , chunks of ice become move shapes . These rounded pieces of ice 50 cm to 1 m in diameter are called flannel cake ice. In the next step of freezing pieces of pancake ice freeze together and form a field of natation ice . Waves and tides once again break a field of ice , forming a ridgepole formation guide many generation thicker than the original ice. In the ice carry formed portions of polished water - polynya , which stomach the submarines to surface even in the primeval Arctic .