Science / Tides and Currents / Lowest Astronomical Tide: As defined by the International Hydrographic Organization, the lowest tide level that can be predicted to occur under average meteorological conditions and under any combination of astronomical conditions.
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Science / Tides and Currents / Secondary Control Tide Station: A tide station at which continuous observations have been made over a minimum period of 1 year but less than 19 years. The series is reduced by comparison with simultaneous observations from a primary MORE
Science / Tides and Currents / Reduction Of Tides: A processing of observed tide or tidal current data to obtain mean values for tidal or tidal current constants. MORE
Science / Biology / Red Tides: Phenomenon associated with population explosions (blooms) of certain types of dinoflagellates; red structures inside the dinoflagellates cause the water to have a reddish color. MORE
Science / Tides and Currents / Red Tide (Water): The term applied to toxic algal blooms caused by several genera of din flagellates (Gymnodinium and Gonyaulax) which turn the sea red and are frequently associated with a deterioration in water qualit MORE
Science / Tides and Currents / Sequence Of Tide: The order in which the four tides of a day occur, with special reference as to whether the higher high water immediately precedes or follows the lower low water. MORE