This is a simple density-depth ocean water profile. You can see density increases with increasing depth. The pycnocline are layers of water where the water density changes rapidly with depth. This density-depth profile is typical of what you might expect to find at a latitude of 30-40 degrees south.
Click on image for full size
Windows to the Universe original image
Density of Ocean Water
The density of pure water is 1000 kg/m3
. Ocean water is more dense because it has salt in it
. Density of ocean water
is about 1027 kg/m3
at the top of the ocean.
Less dense water floats on top of more dense water. So, if you were to head to the bottom of the ocean in a submarine, the water would get more and more dense as you went!
Shop Windows to the Universe Science Store!
The Spring 2010 issue of The Earth Scientist
, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!
You might also be interested in:
The world’s oceans, the Pacific, the Atlantic, the Indian, the Arctic, and the Southern Ocean, have different names, but they are really not that different. Water moves between them all the time. So they...more
Seawater moves through the Atlantic as part of the Global Ocean Conveyor. That’s the way that seawater travels the world’s oceans. The water in the Global Ocean Conveyor moves around because of differences...more
An aquifer is the name for a layer of rock which is capable of holding a large amount of water. Some layers are better at holding water than others, for example a layer of sandstone can hold a good deal...more
Limestone is an example of a carbonate. Other examples of carbonates include calcite, dolomite, and marble. Limestone dissolves easily in rainwater, especially rainwater which is loaded with carbonic acid....more
The deep ocean waters are under pressure and are much colder than layers of the ocean which are closer to the surface. Dissolved carbon dioxide seems to be absent from the deep ocean water and as a result...more
Have you ever left a glass of water out for a long time? Did you notice that the water disappears after a few days? That's because it evaporated! Evaporation is when water passes from a liquid to a gas....more
The water at the ocean surface is moved by powerful wind. The wind is able to move the top 400 meters of the ocean. This moving water is called surface ocean currents. Surface ocean currents form large...more