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A spring tide—popularly known as a "King Tide"—refers to the 'springing forth' of the tide during new and full moon. A neap tide—seven days after a spring tide—refers to a period of moderate tides when the sun and moon are at right angles to each other.
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What is a neap tide? When the sun and moons are at right angles to each other, there is least gravitational pull, meaning the tidal range is at its lowest. The neap tide occurs 7 days after the spring tide. A neap tide is where the sun and moon are at their least aligned point. Not to scale.
28 Σεπ 2024 · neap tide, tide of minimal range occurring near the time when the Moon and the Sun are in quadrature. This condition is geometrically defined as the time at which the line from the Earth to the Moon is at right angles to the line from the Earth to the Sun.
When the Sun is at a right angle to the Moon, moderate tides, called neap tides, result. From our view on Earth, these tides coincide with certain lunar phases since they occur when the Moon reaches specific positions in its orbit.
Neap tides occur seven days after spring tides, which are periods of high tides that occur when the sun, moon, and Earth are aligned. Neap tides occur during the first and third quarter moon phases, which happen roughly halfway between the full and new moon phases.
Neap Tides. The tidal range is smallest around the Quarter Moons /Half Moons because the gravitational force from the Moon and the Sun counteract each other at these 2 points of the lunar month. These tides are called neap tides or neaps, from Anglo-Saxon, meaning without the power. Neaps always occur about 7 days after spring tides.
Neap tides occur when the moon is at its first or third quarter. Now the lunar tide and solar tide cancel each other out, leading to a smaller tidal range than average. The spring-neap cycle causes tides to build to a maximum and fall to a minimum twice each month.
