oceanroamers

Providing management & consulting services to the marine, diving and tourism industries since 2003.

Why does the ocean get colder at depth?

coldocean
The  great ocean conveyor  moves water around the globe. Cold, salty water is dense and sinks to the bottom of the ocean while warm water is less dense and remains on the surface. Cold water has a higher density than warm water. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface. The sinking and transport of cold, salty water at depth combined with the wind-driven flow of warm water at the surface creates a complex pattern of ocean circulation called the 'global conveyor belt.' In contrast, the Earth gets hotter and hotter at depth primarily because the energy of radioactive decay is leaking outwards from the core of the planet . While this geothermal energy is transferred to ocean water along the seafloor, the effect is so small that it's immeasurable by...
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