What is the average deep ocean temperature?

Answer 1

The average deap ocean temperature is 3.5 degrees C.
http://earth.usc.edu/~geol150/variability/deepocean.html
On the whole, any warm water in the open ocean is restricted to a shallow, near-surface band. No matter how warm the surface layers are, between 300 and 1,000m beneath the surface the temperature falls to about 5°C and then continues to fall slowly with increasing depth. As a result, even beneath the hottest tropical regions the water at a depth of 2,000-3,000m almost never rises above 4°C--with one dramatic exception. In some places along the oceanic ridge systems, extremely hot sea water gushes out of fissures in the underlying rocks. The water from these hydrothermal vents emerges at incredibly high temperatures--up to 300-400°C but, because of the vast mass of surrounding cold water, the temperature drops to the normal 3-4°C within a metre or so of the vent opening.
http://www.nhm.ac.uk/nature-online/earth/oceans/fathomseminar-deepocean/session1/no-oceans-fathomseminar-deepocean-session1.html

Answer 2

Probably just over the freezing point of water, except where thermal discharge vents into the water from the underground volcanoes and the like.

Answer 3

Its 4 °C, because thats the temperature for which water has the highest density and thus 'sinks' to the bottom.

Answer 4

Question is where?

There are different tempretures in different regions.

That's what cause the currents!

Answer 5

-7,or so i have read

Answer 6

four

Answer 7

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