What maintains the permanent thermocline found at all low and mid-latitudes?
A) Continual upwelling
B) Warm water currents
C) Density stratification
D) Downwelling

Question

Quizplus · Accepted Answer

The thermohaline flow of water rises to the surface in temperate and tropical zones very gradually. It sinks back down rapidly once it is in the colder waters at the poles. This diffuse upwelling of deep water maintains the thermoclines. Information can be found in the section Thermohaline Circulation Affects All the Ocean's Water.

What Maintains the Permanent Thermocline Found at All Low and Mid-Latitudes