When spring tides coincide with lunar perigee, tidal range is increased.

Question

Quizplus · Accepted Answer

Spring tides occur when the gravitational forces of the Sun and the Moon align and have a compounding effect on each other. Lunar perigee is when the Moon is closest to Earth in its elliptical orbit, which also increases the gravitational force on the tides. When these two events coincide, the tidal range is increased, leading to higher high tides and lower low tides.

When Spring Tides Coincide with Lunar Perigee, Tidal Range Is