Last Updated:2025/11/29
(hydrography) A datum on which the tides are computed at the given port, obtained by observation. It is the interval between the Moon's passage over the meridian and the time of high water at the port, on the days of new moon and full moon.
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establishment of the port
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Source Word
establishment of the port
Noun
Japanese Meaning
与えられた港で潮位の計算に用いられる、観測により得られる基準値。新月および満月の日において、月が子午線を通過する時刻と港における高潮の時刻との差(間隔)を示す。