spring tide
Rare technical term for the tide that occurs around the new and full moons, when the tidal range is greatest. The common word is 大潮 (おおしお).
See also: 大潮
朔望潮は、新月と満月の頃に起こる潮の満ち干の差が大きい現象を指す。
朔望潮 refers to the phenomenon of large tidal range that occurs around the new and full moons.
Compound of 朔 (saku, 'new moon'), 望 (bō, 'full moon'), and 潮 (chō, 'tide'). The term directly describes the tide associated with the syzygy of the sun, earth, and moon.