1 article for "Spring Tide"

Because the Moon is closer to the earth than is the Sun, the Moon's tide-raising force is greater. At syzygy (New and Full Moon), the effect of the Sun increases the height of the tides; such tides are called Spring Tides. But, at First and Last Quarter, the Sun and Moon pull at right angles, reducing the effect; such tides are called Neap Tides.

See also:
♦ Tidal Forces ♦ Lunar Phases ♦ Syzygy ♦ Neap Tide