lecture 7 - winds and the global circulation

Question 1

thermocline

Answer 1

is a layer water bodies below whcih, temperatures drop rapidly.
Very cold water extends from the thermocline to the deep ocean floor, where temperatures range from 0°C to 5°C.
About 90 percent of the total volume of the oceans is contained in the deep water below the thermocline.

Question 2

gyres

Answer 2

The ocean current system includes large circular movements, called gyres, which are centred approximately at lat. 30°.