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Salinity and temperature are conservative properties of seawater that directly affect the density of seawater. This is an extremely important property because it in turn directly affects upwelling and downwelling of oceans and some major oceanic currents. This is because if a denser body of water is sitting on top of a less dense body of water, the denser part of the water column will turn over (sink) to get to a more stable water column state. This leads to water mixing of nutrients and oxygen for organisms living in the water column. Typically the saltier the water, the higher the density and also the colder the water, the higher the density. So because of this, cold and salty water (Antarctic and Arctic) are the most dense bodies of water and typically stay towards the bottom of the ocean floor.

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Q: How salinity and temperature affects the seawater?
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In addition to salinity what factor affects the density in sea water?

Density of seawater is largely a function of two factors: depth, that is, the deeper water is more dense than water at shallower levels; and temperature - water at higher temperatures is less dense than cooler water. Salinity is also a factor, but that's a localized phenomena simply because all the worlds oceans are in fact one large ocean and maintains an average overall salinity.


What affects density more temperature or salinity?

Density is affected by both temperature and salinity. The colder the temperature and the saltier the substance, the greater the density.


What is the density in seawater determined by?

Seawater's density varies by temperature and salinity. I.e., cold water is more dense than warm water, and water with a higher salinity (more dissolved salt) is less dense than water with a lower salinity.


How does the salinity of sea ice compare to the salinity of normal seawater?

Ice has zero salinity. When it is frozen, the salt is pushed out. Therefore, since the salinity of normal seawater is about 35 ppt, it has 35 ppt more salinity than seawater.


Salinity in the ocean is highest in regions where is high and is low?

Salinity in the ocean is highest in regions where evaporation is high and precipitation is low. Density in seawater is determined by both temperature and salinity.


How does water temperature affect water salinity?

The temperature and salinity of seawater determine its density. Water gets denser as it gets saltier and reaches a maximum density at 4 °C. Salinity does affect the boiling point and freezing point of water, but not its temperature.


What factor affects the density of sea water?

Temperature, salinity, and pressure.


How does temperature affect water?

The temperature and salinity of seawater determine its density. Water gets denser as it gets saltier and reaches a maximum density at 4 °C. Salinity does affect the boiling point and freezing point of water, but not its temperature.


What causes the density of seawater to increase?

The density of seawater increases if salinity increases.


What two things affects the density of the water?

The temperature and the salinity affect water's density.


Is not a process that decrease the salinity of seawater?

evaporation


What is the average salinity of seawater by weight?

The average salinity of seawater is about 35 grams of dissolved salts per kilogram of seawater, or 3.5% by weight.