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Status: STD 2005/06/07
Code: 804

Concept definition: A <TIDE> of decreased range (or tidal <WATER_CURRENT>s of decreased <<WATER_CURRENT_SPEED>>) occurring semi-monthly as the result of the <MOON> being in quadrature; neap tide [TCG, "neap tides or tidal currents"]. The neap range of the <TIDE> is the mean range occurring at the time of neap <TIDE>s and is most conveniently computed from the harmonic constants. It is smaller than the mean range where the type of <TIDE> is either semi-diurnal or mixed and is of no practical significance where the type of <TIDE> is predominantly diurnal.
Reference type: PR
Reference: [S32, "tide(s): neap"]
Supplemental references: [SOED, "neap", adj.]

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