Geography • Physical GeographyMedium
What is the primary factor driving the thermohaline circulation in the world's oceans?
A. Surface wind stress and Coriolis force
B. Variations in water temperature and salinity✓ Correct Answer
C. Lunar gravitational pull
D. Submarine volcanic activity
💡 Solution & Explanation
Thermohaline circulation is driven by global density gradients, which are controlled by variations in water temperature and salinity across oceanic regions. Surface winds and tides influence shallow currents, but deep ocean conveyor belts depend on thermal and saline properties. Polar regions play a vital role in this circulation because cooling and ice formation increase surface water density.
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