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Subject Topic: A third process by which Post ReplyPost New Topic
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Joined: 23 December 2008
Location: China
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Posts: 6
Posted: 23 December 2008 at 12:33am | IP Logged Quote yalioo123

If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. WoW Gold,Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity.

ˇˇˇˇOne of these is the subtraction of water from the ocean by means of evaporation - conversion of liquid water to water vapor.WoW Gold, In this manner the salinity is increased, since the salts stay behind. If this is carried to the extreme, of course, white crystals of salt would be left behind.

ˇˇˇˇThe opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean.wotlk power leveling, Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.

ˇˇˇˇNormally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation.Cheap WoW Gold, Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas. 

ˇˇˇˇA third process by which salinity may be altered is associated with the formation and melting of sea ice.Cheap WoW Gold, When sea water is frozen, the dissolved materials are left behind. In this manner, sea water directly beneath freshly formed sea ice has a higher salinity than it did before the ice power leveling, Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water. In the Weddell Sea Antarctica, the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water. ,This heavy water sinks and is found in the deeper portions of the oceans of the world.

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