: Paléoclimatologie: thermohaline circulation

natural phenomenon > oceanic phenomenon > ocean circulation > thermohaline circulation

thermohaline circulation

Thermohaline circulation is a part of the large-scale ocean circulation that is driven by global density gradients created by surface heat and freshwater fluxes. The adjective thermohaline derives from thermo- referring to temperature and -haline referring to salt content, factors which together determine the density of sea water. On a global scale, the surface ocean circulation and the deep ocean circulation form a huge circulation loop called the thermohaline loop, which is the source of a large cycle that stirs up the water and conveys heat to each hemisphere of the globe. It is estimated that one molecule of water makes this entire circuit in about 1 000 to 1 500 years. (Adapted from: https://en.wikipedia.org/wiki/Ocean_current and translated from: https://fr.wikipedia.org/wiki/Circulation_thermohaline)

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