Motions in the Earth’s oceans include tides, which are caused by the gravity of the Sun and Moon; surface currents, which are driven by wind; and thermohaline circulation, which is driven by density differences in seawater. All of these motions move large amounts of water from place to place. In so doing, they also transport heat from equator to pole and from the surface to the deep ocean, and they also transport dissolved chemicals, including greenhouse gases. Although the saltiness of ocean... więcej
Salem Press Encyclopedia of Science, 2019. 2p.