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It predicts the large amphidromic systems in the world's ocean basins and explains the oceanic tides that are actually observed. [34] The equilibrium theory—based on the gravitational gradient from the Sun and Moon but ignoring the Earth's rotation, the effects of continents, and other important effects—could not explain the real ocean ...
Tidal heating produces dramatic volcanic effects on Jupiter's moon Io. Stresses caused by tidal forces also cause a regular monthly pattern of moonquakes on Earth's Moon. [7] Tidal forces contribute to ocean currents, which moderate global temperatures by transporting heat energy toward the poles.
Body tides also exist in other astronomical objects, such as planets and moons. In Earth's moon, body tides "vary by about ±0.1 m each month." [11] It plays a key role in long-term dynamics of planetary systems. For example, it is due to body tides in the Moon that it is captured into the 1:1 spin-orbit resonance and is always showing us one side.
“The most dreaded bit of ocean on the globe – and rightly so,” Alfred Lansing wrote of explorer Ernest Shackleton’s 1916 voyage across it in a small lifeboat. It is, of course, the Drake ...
Low tide at Bangchuidao scenic area, Dalian, Liaoning Province, China Low tide at Ocean Beach in San Francisco, California, U.S. Low tide at Bar Harbor, Maine, U.S. (2014) The changing distance separating the Moon and Earth also affects tide heights. When the Moon is closest, at perigee, the range increases, and when it is at apogee, the range ...
Munk & Wunsch (1998) estimated that Earth experiences 3.7 TW (0.0073 W/m 2) of tidal heating, of which 95% (3.5 TW or 0.0069 W/m 2) is associated with ocean tides and 5% (0.2 TW or 0.0004 W/m 2) is associated with Earth tides, with 3.2 TW being due to tidal interactions with the Moon and 0.5 TW being due to tidal interactions with the Sun. [3] Egbert & Ray (2001) confirmed that overall ...
The reduction of tides could have profound negative consequences on coastal ecosystems. [10] Tides also help to drive ocean currents; without the Moon, weather extremes and major weather events would be more common. [10] In 1993 numerical simulations suggested that the Moon is necessary to keep the Earth's axial tilt stable.
The NASA astronauts who became the first people to land on the moon's surface in the 1960s and 1970s also discovered a previously unknown lunar characteristic - it has an atmosphere, though quite ...