What Is the Most Common Tidal Pattern Around the World?

What Is the Most Common Tidal Pattern Around the World?

What Is the Most Common Tidal Pattern Around the World?

The most common tide pattern around the world is that of semi-diurnal tides. This pattern contains two high tides and two low tides of the same height occurring in a 24-hour period. Semi-diurnal tides occur when the moon is over the equator.

Two other tidal patterns are diurnal and mixed tides. Diurnal tides contain one high and low period a day. They occur when the moon is farthest from the equator. A mixed tide is a special type of semi-diurnal tide that exhibits varying heights of each of the high and low tides. Mixed tides occur as the moon transitions either north or south of the equator.