Scroll down to related links and look at "Salinity of the oceans". http://en.wikipedia.org/wiki/Image:Wiki_plot_04.png
The salinity of the ocean was much higher than I thought it would be.
The top most layer has more salinity. But ignoring thermo-haline currents.
Ocean water has a higher salinity than fresh water.
The salinity of sea waters is approx. 3,5 %.
The salinity of sea waters is approx. 3,5 %.
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).
The average percentage of dissolved oxygen in ocean water is typically around 3-6%, but this can vary depending on factors such as temperature, salinity, and depth of the water.
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.
Ocean water has a higher salinity (salt content) than fresh water does.
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
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.