tide
Sign in to save300px|thumb|upright=1|Simplified schematic of only the lunar portion of Earth's tides, showing (exaggerated) high tides at the sublunar point and its antipodal point|antipode for the hypothetical case of an ocean of constant depth without land, and on the assumption that Earth is not rotating; otherwise there is a lag angle. Solar tides not shown.|alt= right|thumb|Earth's rotation drags the position of the tidal bulge ahead of the position directly under the Moon showing the lag angle. thumb|In Maine (U.S.), low tide occurs roughly at moonrise and high tide with a high Moon, corresponding to t
AI overview
Tides are the regular rise and fall of ocean water levels caused primarily by the Moon's gravitational pull on Earth's oceans, with the Sun also playing a smaller role in this effect. Tides matter because they affect coastal areas significantly, influencing activities like navigation, fishing, and coastal planning.
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Article
43 sectionsContents
- Characteristics
- Reference levels
- Range variation: springs and neaps
- Principal lunar semi-diurnal constituent
- Lunar distance
- Other constituents
- Phase and amplitude
- History
- History of tidal theory
- History of tidal observation
- Physics
- {{anchor|Equilibrium}} Equilibrium theory
- Forces
- Laplace's tidal equations
- Amplitude and cycle time
- Dissipation
- Bathymetry
- Observation and prediction
- Timing
- Analysis
- Tide Table
- Example calculation
- Current
- Cook Strait
- Nantucket Shoals
- Power generation
- Navigation
- Biological aspects
- Intertidal ecology
- Biological rhythms
- Other tides
- Internal tides
- Lake tides
- Atmospheric tides
- Earth tides
- Galactic tides
- Misnomers
- In Culture
- See also
- Notes
- References
- Further reading
- External links
300px|thumb|upright=1|Simplified schematic of only the lunar portion of Earth's tides, showing (exaggerated) high tides at the sublunar point and its antipodal point|antipode for the hypothetical case of an ocean of constant depth without land, and on the assumption that Earth is not rotating; otherwise there is a lag angle. Solar tides not shown.|alt= right|thumb|Earth's rotation drags the position of the tidal bulge ahead of the position directly under the Moon showing the lag angle. thumb|In Maine (U.S.), low tide occurs roughly at moonrise and high tide with a high Moon, corresponding to the simple gravity model of two tidal bulges; at most places however, the Moon and tides have a [[phase shift.]] right|thumb|Tide coming in, video stops about hours before high tide right|thumb|Tide coming in
Tides are the periodic rise and fall of sea level resulting from the differential gravitational forces exerted primarily by the Moon and the Sun, combined with inertial effects associated with the Earth–Moon system’s orbital motion and the Earth's rotation.