M4, M6, M8

Science / Tides and Currents / M4, M6, M8: Shallow water over tides of the principal lunar constituent. See shallow water constituent. Speed of M4 = 2M2 = 4T – 4s + 4h = 57.968,208,4° per solar hour. Speed of M6 = 3M2 = 6T – 6s + 6h = 86.952,312,7° per solar hour. Speed of M8 = 4M2 = 8T – 8s + 8h = 115.936,416,9° per solar hour.

M4, M6, M8

Science / Tides and Currents / M4, M6, M8: Shallow water over tides of the principal lunar constituent. See shallow water constituent. Speed of M4 = 2M2 = 4T – 4s + 4h = 57.968,208,4° per solar hour. Speed of M6 = 3M2 = 6T – 6s + 6h = 86. MORE

Overtide

Science / Tides and Currents / Overtide: A harmonic tidal (or tidal current) constituent with a speed that is an exact multiple of the speed of one of the fundamental constituents derived from the development of the tide-producing force. The MORE

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