Neap tide

Neap tide

A tide of decreased amplitude, occurring semimonthly one or two days after quadrature .

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Part of Speech: noun
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Industry/Domain: Earth science
Category: Oceanography
Company: Marine Conservation Society
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neap tide

Weather; Meteorology

A tide of decreased amplitude, occurring semimonthly one or two days after quadrature. Compare spring tide, tropic tide, equatorial tide.

neap tide

Natural environment; Coral reefs

A tide that occurs when the difference between high and low tide is least; the lowest level of high tide. Neap tide comes twice a month, in the first and third quarters of the ...

neap tides

Biology; Marine biology

Tides occurring when the vertical range is minimal.

neap tide

Earth science; Physical oceanography

The tides produced when the gravitational pull of the Sun is in quadrature, i.e. at right angles to, with that of the Moon. These occur twice a month at about the times of the ...

neap tide

Astronomy; Moon

When the Moon is at its first quarter or last quarter, its gravitationsl forces are partially cancelled out by the Sun. This leads to a lower high tide than normal.

neap tide

Geography; Physical geography

A low tidal range caused when the angle of a line drawn from the sun to the earth and then to the moon is 90- in this twice-monthly situation the gravitational pulls of sun and ...

placer

Earth science; Oceanography

A layer of minerals laid down by flowing water. People who pan for gold search through placers.

reef

Earth science; Oceanography

An underwater ridge of rock that rises up to or near the surface. Reefs are important ecosystems that provide home for sea life.

aquascape

Earth science; Oceanography

A scenic view of a body of water; an area having a natural or constructed aquatic feature (as a pond or fountain).

equatorial rossby wave

Earth science; Oceanography

An equatorially trapped westward propagating wave that moves due to isentropic gradients of potential vorticity. The meridional velocity of the n'th mode of these waves has the ...

blackbody radiator

Earth science; Oceanography

A hypothetical, ideal radiator that totally absorbs and reemits all energy incident upon it. Actual objects only approach this ideal.

shear instability

Earth science; Oceanography

An instability of an unbounded parallel shear flow to the growth and nonlinear development of waves with phase speed in the along flow direction approximately equal to the speed ...

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