Declination

Science / Geology / Declination: At any place on Earth, the angle between the magnetic and rotational poles.

Declinational Reduction

Science / Tides and Currents / Declinational Reduction: A processing of observed high and low waters or flood and ebb tidal currents to obtain quantities depending upon changes in the declination of the Moon; such as tropic ranges or speeds, height or spee MORE

Magnetic Declination

Science / Geology / Magnetic Declination: The horizontal angular difference between True North and Magnetic North. MORE

Tropic Tides

Science / Tides and Currents / Tropic Tides: Tides occurring semi-monthly when the effect of the Moon's maximum declination is greatest. At these times there is a tendency for an increase in the diurnal range. The tidal datums pertaining to the MORE

Solstices

Science / Tides and Currents / Solstices: The two points in the ecliptic where the Sun reaches its maximum and minimum declinations; also the times when the Sun reaches these points. The maximum north declination occurs on or near June 21, ma MORE

Tropic Currents

Science / Tides and Currents / Tropic Currents: Tidal currents occurring semi-monthly when the effect of the Moon's maximum declination is greatest. At these times the tendency of the Moon to produce a diurnal inequality in the current is at a maxi MORE

Tropic Intervals

Science / Tides and Currents / Tropic Intervals: Tropic higher high water interval (tchhwi) is the lunitidal interval pertaining to the higher high waters at the time of the tropic tides. Tropic lower low water interval (tcllwi) is the lunitidal int MORE

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