2006-07-08 04:27:54 · 10 answers · asked by Cardozo LS Student. 1 in Environment
Density rules. The heaviest, or most dense, water will always be on the bottom. Pure water is densest at 4 C . To make it heavier, it has to get saltier. As the surface of the Arctic ocean freezes, the left-behind part is very salty water at 3 to 4 C. This North Atlantic Deep Water sinks to the bottom and flows worldwide. Warmer less salty water sits on top of it.
In the Antarctic, there is no warmer fresher water to sit on top of it, so NADW is exposed at the surface. When fresh water freezes out at the surface, this already salty and cold water gets even saltier and can cool to about -0.8C before sinking. This is Antarctic Bottom Water - the deepest, coldest water layer in the world.
An interesting point is that the Marianas Trench, the deepest spot in the oceans, is only at about plus 2 C. This is because it is completely surrounded by water shallow enough (at only a mile or so deep) that AABW would have to flow uphill to get to it.
2006-07-08 08:07:52 · answer #1 · answered by virtualguy92107 7 · 0⤊ 0⤋
Coldest Ocean Temperature
2016-12-28 12:45:42 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Coldest Ocean In The World
2016-11-11 07:31:58 · answer #3 · answered by Anonymous · 0⤊ 0⤋
This Site Might Help You.
RE:
how cold is it in the deepest part of the coldest ocean?
2015-08-19 01:04:33 · answer #4 · answered by Jeb 1 · 0⤊ 0⤋
Ocean temperatures tend to decrease with depth due to the limits of solar radiation penetration. Typical deep sea temperatures range from 4 to 10 °C. However, annual temperature variation also decreases with decreasing depth. Water temperatures at 1000m can vary 0.2 °C over a year. Water temperatures at 100 m often vary by 25 times this much
2006-07-08 04:37:48 · answer #5 · answered by rar 2 · 0⤊ 0⤋
Not less then 4 degree Centigrade
(between 4&5).
As it is the most dense
and comes down
while
cold and warm molecules
move up.
2006-07-08 04:41:34 · answer #6 · answered by Dr. Homo sapiens 2 · 0⤊ 0⤋
Cold
2006-07-08 04:46:38 · answer #7 · answered by Modern Day Pirate 1 · 0⤊ 1⤋
Dr. Homo Sapien is correct. Water begins to expand as it is temperature drops below below 4 degrees centigrade. As it expands, it becomes more bouyant and rises. That's why lakes freeze on top rather than the bottom.
2006-07-08 05:16:16 · answer #8 · answered by oscarsnerd 2 · 0⤊ 0⤋
-4 degrees c.... The water can get colder than the freezing temp of zero because the salt decreases the icing point....
2006-07-08 04:37:26 · answer #9 · answered by Karen 2 · 0⤊ 1⤋
shallows area
2014-02-25 01:14:58 · answer #10 · answered by Lydie 1 · 0⤊ 0⤋