MasteryExams
Geography • Physical GeographyHard

What is the primary factor responsible for the generation of deep ocean circulation, also known as thermohaline circulation?

A. Surface wind stress and Coriolis effect
B. Differences in water temperature and salinity affecting density✓ Correct Answer
C. Gravitational pull of the Sun and the Moon creating tidal currents
D. Geothermal heating at mid-ocean ridges driving convective upwelling

💡 Solution & Explanation

Thermohaline circulation, often referred to as the ocean conveyor belt, is primarily driven by spatial differences in water temperature and salinity that alter seawater density. Cold, salty water sinks at high latitudes and initiates global-scale deep ocean currents that circulate water and heat across ocean basins. Surface winds drive upper ocean currents rather than deep abyssal circulations.

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