Question

what are the factors affecting the salinity of the sea water?(answer in brief)

Answer 1

comming to the topic of salinity of sea water the most important and major factors affecting the salinity of sa water are as follows
1.the salinity of water in surface layer of oceans mainly depend on evaporation and precipitation
2.the one of the factor affecting is transportation of  rain water in the cycle of water.

Answer 2

Salinity is the term used to define the total content of dissolved salts in sea water.It is calculated as the amount of salt (in gm) dissolved in 1,000 gm (1 kg) of seawater.It is usually expressed as parts per thousand or ppt.Salinity of 24.7 (24.7 o/oo) has been considered as the upper limit to demarcate ‘brackish water’.

Role of Ocean Salinity

Salinity determines compressibility, thermal expansion, temperature, density, absorption of insolation, evaporation and humidity.It also influences the composition and movement of the sea: water and the distribution of fish and other marine resources.

Factors Affecting Ocean Salinity

1) The salinity of water in the surface layer of oceans depend mainly on evaporation and precipitation.

2) Surface salinity is greatly influenced in coastal regions by the fresh water flow from rivers, and in polar regions by the processes of freezing and thawing of ice.

3) Wind, also influences salinity of an area by transferring water to other areas. 

4) The ocean currents contribute to the salinity variations. Salinity, temperature and density of water are interrelated. Hence,any change in the temperature or density influences the salinity of water in an area.

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