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Surface mixed zone
jewish holdiday
Upwelling is water raising from deep in the ocean to the surface. It can be caused by wind ar density currents.
When the ocean water freezes, it increases the salinity. When the ocean water freezes at the surface, ice will float on top of water because ice is less dense than liquid water. The dissolved solids are squeezed out of the ice and enter the liquid water below the ice. This increases the salinity of the water. The density of the water also increases.
For practical purposes water is not compressible, and thus the density would be the same. However, it is possible you would find the density of water 1 mile deep in the ocean would be higher than the density at the surface.
The density of surface seawater ranges from about 1.020 to 1.029 g·cm-3, depending on the temperature and salinityThe average density of seawater at the surface of the ocean is 1.025 g/ml; seawater is denser than freshwater (which reaches a maximum density of 1.000 g/ml at a temperature of 4°C) because of the added mass of the salts.
The water would have the same density anywhere it is.
No, salty water has higher density, that's why it's easier to stay close to surface in sea or ocean.
tiorklitkriirkl;tiofklyiipropyk
It is called an ocean current
An upwelling is a current in the ocean that brings deep, cold water to the ocean surface.
A density current is where a warm current floats on top of a cold currentA density current is where a warm current floats on top of a cold currentThe movement of a mass of cold, dense ocean water as it sinks beneath warmer surface water.