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What is the mechanisim responsible for causing the very high density of Antarctic bottom water?
The mechanisms are temperature and circulation.
Sea ice concentrates salt. Seas in the Southern Ocean -- the Weddell and the Ross -- freeze over during the Antarctic winter -- and during that process produce polynyas which open surface water to the cold winds that blow off the continent. This freezes the water more quickly and . . . concentrates the minerals.
The water becomes laden with salt, and is colder, so it sinks, creating Antarctic bottom water.
What else can I help you with?
How does a density current form in Antarctic?
it forms wind I think?
Name three density currents that form in the polar regions?
The Antarctic Bottom Water, North Atlantic Deep Water, and Antarctic Intermediate Water are three density currents that form in polar regions.
What is an Antarctic density current?
An Antarctic density current is a flow of cold, dense water that moves along the ocean floor in the Southern Ocean. These currents are important for the transport of nutrients and influence the climate by helping to regulate heat distribution in the ocean. They can also play a role in the movement of marine life and the cycling of nutrients in the ocean.
Is water density is responsible for water color?
No, it is not.
What does the change in density mean if a hot and cooler liquid are present together?
The change in density between the hot and cooler liquid can result in the hot liquid rising and the cooler liquid sinking due to differences in temperature causing changes in density. This phenomenon is known as thermal convection and is responsible for processes such as boiling water or ocean currents.
What is the difference between floating and sinking objects and the density of the liquid they are in?
Floating objects have a lower density than the liquid they are in, causing them to float. Sinking objects have a higher density than the liquid, causing them to sink. The density of the liquid determines whether an object will float or sink based on the relationship between the object's density and the liquid's density.
What is the density of antarctic bottom water?
The density of Antarctic Bottom Water is typically around 1.028–1.030 g/cm^3. It is denser than the surrounding seawater due to its low temperature and high salinity, which causes it to sink to the ocean floor and flow northward.
What is the most important factor affecting seawater density?
The most important factor affecting seawater density is its temperature. As temperature increases, seawater density decreases, causing it to expand and rise. Conversely, as temperature decreases, seawater density increases, causing it to contract and sink.
What are spiral density waves responsible for?
They initiate new star formation. Therefore they are responsible for the formation of new stars.
Which is a cause of density currents?
Density currents are caused by differences in water density. This can be due to variations in temperature, salinity, or both. When denser water sinks and interacts with lighter water, it creates a current that moves along the density gradient.
What is Air refraction?
Air refraction is the bending of light rays as they pass through the Earth's atmosphere, causing objects to appear shifted from their actual position. This phenomenon is responsible for optical illusions like mirages and twinkling stars. It occurs due to the varying density of air layers, causing light to travel at different speeds.
What is responsible for the summer and winter stratification of lakes?
I believe it is because of density of water.
