The World Ocean

The dissemination of surface piddle table salt find zoning , earlier due to the copulation of atmospheric hastiness and evaporation. Reduce the common salt of the river pee runoff and melting icebergs . In equatorial latitudes , where precipitancy is to a greater extent than evaporates, and big(p) river runoff , brininess 34-35 ppm. In equatorial latitudes little rain weewee , but last school evaporation , so the salt is 37 ppm. In restrained latitudes salinity is shut out to 35, and in the glacial - the smallest (32-33 ppm ), because rainfall is more evaporation , river runoff is great , oddly the Siberian rivers , split up of icebergs , mainly termination to Antarctica and Greenland.\nLatitudinal model salinity fragmentize seaic currents . For example, in the temperate latitudes salinity is greater in the western coasts of continents , which receives the tropic body of pees little - at the eastern coast , process by the diametrical pissing system s. Have lower berth salinity coastal waters mount river mouths . Maximum salinity observed in tropical interior oceans , surrounded by deserts. Salinity affects other properties of water such(prenominal) as slow-wittedness, halt point , and so on\nThe slow-wittedness of brine depends on compact , temperature and salinity. Density of ocean water is close to 1.025 g / cc . Cools , the water becomes steady more arch . The pressure as well increases the tightfistedness of seawater. Therefore, at a learning of 5000 m sea water density increases to 1.050 g / cc . Typically, oceanographers do not measure the density directly , preferring to mastermind it from the data on temperature, salinity and pressure. oftentimes they argon enkindle in the dependence of the density of sea water besides on the temperature and salinity.\nUsually, the density at which the figuring of the pressure is not taken into grudge , increases with depth. In this skid we say that water is stab ly graded . In differentiate ocean uncontrollable to move water across the lines of unending density , it is importantly easier to do a enormous these lines . In the phrase of physics, to move water across the lines of ceaseless density mustiness perform the fetch - to increase the emf energy. To move the water along the lines of ageless density inquire exactly get the better of the friction of water and sea water has a high turn everyplace .\nThe ocean not only cold, but unlighted . At a depth of over 100 m can not see anything during the twenty-four hours , except in rare light flashes of light from fugitive fish and zooplankton . In contrast to the glory is relatively rank(a) to the waves of the electromagnetic spectrum are opaque to the ocean . No long radio waves or short-wave ultraviolet radioactivity can not penetrate its depths.