Table of Contents
How does salinity decrease?
Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
Does temperature affect salinity readings?
With increasing temperature, salinity decreases….and conversely, with decreasing temperature, salinity increases.
Does salinity or temperature affect density more?
Ocean water gets more dense as temperature goes down. Temperature has a greater effect on the density of water than salinity does. So a layer of water with higher salinity can actual float on top of water with lower salinity if the layer with higher salinity is quite a bit warmer than the lower salinity layer.
Why does do decrease when salinity increases?
As the temperature goes up, water releases some of its oxygen into the air. Water also holds less dissolved oxygen at higher elevations because there is less pressure. Solubility of dissolved oxygen also decreases as salinity increases.
Why does temperature affect density more than salinity?
The warmer the water, the more space it takes up, and the lower its density. When comparing two samples of water with the same salinity, or mass, the water sample with the higher temperature will have a greater volume, and it will therefore be less dense.
How do temperature and salinity affect seawater density?
How do temperature and salinity affect density of seawater? Salinity adds to the mass so the more salinity the denser the water. Lower temperatures make the water more dense.
Does salinity go up or down with temperature?
Typically, the salinity decreases from the surface ocean to deep waters is very small, from about 36 g/L (ppt) at the surface to 35 g/L (ppt) in the deep water, thus there is a very small density decrease with depth given a constant temperature. The salinity of seawater also affects it’s freezing point temperature.
Does salinity increase or decrease with depth?
Typically, the salinity decreases from the surface ocean to deep waters is very small, from about 36 g/L (ppt) at the surface to 35 g/L (ppt) in the deep water, thus there is a very small density decrease with depth given a constant temperature.
What is the relationship between temperature and salinity?
At a temperature of 4° C pure water reaches its maximum or peak density, cooled further it expands and becomes less dense than the surrounding water which is why when water freezes at 0° C it floats. Salinity and density share a positive relationship. As density increases, the amount of salts in the water—also known as salinity, increases.
What affects density more temperature or salinity?
There are two main factors that make ocean water more or less dense than about 1027 kg/m3: the temperature of the water and the salinity of the water. Ocean water gets more dense as temperature goes down. So, the colder the water, the more dense it is. Increasing salinity also increases the density of sea water.
Does the temperature of ocean surface water depend on salinity?
The temperature of ocean surface water depends on salinity. Earth has one high tide and one low tide every tidal cycle. Saltwater can be treated and used for drinking water.
How do temperature and salinity affect deep water currents?
The temperature and salinity affect deep water current since The water density depends on temperature and salinity . The deep currents from where the density of ocean water increases. The decrease of the temperature of water led to increase in water salinity while the density of water…