The top most layer has more salinity.
But ignoring thermo-haline currents.
The salinity of the ocean was much higher than I thought it would be.
the most dense part of the water is in the pacific ocean. it is located near the middle of the ocean. go 50 miles past the middle and you there. Make sure you go north though. It's an ocean trench. HOPE THIS HELPS>>>>>EVEN THOUGH IS'T WRONG...
The lowest areas of salinity in an ocean are near where fresh water rivers empty into them. This is because the influx of fresh water creates an area of lower salinity compared to the remainder of the ocean.
Salinity can vary because of water temperature, rivers emptying into the ocean and mixing with ocean water, ice forming or melting, evaporation and precipitation. I think temperature is the biggest reason.
Water salinity describes the amount of salty minerals dissolved in a sample of water. It would therefore make no difference whether the water is warm or cold, since you would have the same amount of salt dissolved in the water per cm3 of water. Salinity would change if you added more water, or if the water was so hot that some of it evaporates, leaving all the dissolved solids behind, but decreasing the amount of water it is dissolved in.
The salinity of the ocean was much higher than I thought it would be.
Scroll down to related links and look at "Salinity of the oceans". http://en.wikipedia.org/wiki/Image:Wiki_plot_04.png
When ocean water freezes into sea ice, some of the salt is incorporated into the new ice. Thereafter, that salt drains as brine (salt plus water), causing the layer of water below to be of higher salinity.
Ocean water has a higher salinity than fresh water.
Salinity vs. depth profiles are different in different parts of the ocean, so there is really no one correct answer to this question.
When the ocean's salinity increases, it can lead to greater water density, affecting ocean circulation patterns. Higher salinity can also impact marine life, as many organisms are adapted to specific salinity levels; changes can disrupt ecosystems and food webs. Additionally, increased salinity may influence the climate by altering heat distribution in ocean currents.
Salinity is determined by the amount of dissolved salts in water. The higher the concentration of salts, the higher the salinity of the water. Salinity is often measured in parts per thousand (ppt) or practical salinity units (PSU).
Ocean water has a higher salinity (salt content) than fresh water does.
The main reasons for higher salt content in surface ocean water are evaporation and formation of sea ice. As water evaporates, salt is left behind, causing an increase in salinity. In regions where sea ice forms, the salt is expelled, further increasing the salinity of the remaining water.
Salinity is a measure of how salty water is. Ocean water is more salty in some places than in others. The answer is yes, places where rivers pour fresh water into the ocean have low salinity because fresh water is normally cold and in warm areas, ocean water evaporates quicker. When this happens, salt is left behind and the ocean water has a higher salinity.
because ocean water leaves salt behind when it freezes
No, ocean water is generally not saltier at the poles. In fact, polar regions tend to have lower salinity due to the melting of ice, which dilutes the seawater. Additionally, freshwater input from rivers and precipitation can also reduce salinity in these areas. In contrast, warmer regions closer to the equator often have higher salinity due to higher evaporation rates.