What is a semi-diurnal tide characterized by?

A semi-diurnal tide is characterized by the presence of two high tides and two low tides each day, typically occurring in a regular and predictable pattern. The key feature of semi-diurnal tides is that the heights of the two high tides and the two low tides are generally similar in magnitude, though slight variations can occur due to changes in atmospheric conditions, local geography, and other environmental factors.

This rhythm contributes to a clear pattern of tidal movement, making it distinct from other tidal types, such as diurnal, which has only one high and one low tide per day, or mixed tides, which may exhibit variations in tidal height not seen in semi-diurnal tides. The understanding of tidal patterns is crucial for navigation, fishing, and various marine activities, as it influences water depth and currents.