2.2.3. Tides Based on Rrequency

1. Semi-diurnal tide: The most common tidal pattern, featuring two high tides and two low tides each day. The successive high or low tides are approximately of the same height.

2. Diurnal tide: There is only one high tide and one low tide during each day. The successive high or low tides are approximately of the same height.

3. Mixed tide: Tides having variations in height are known as mixed tides. These tides generally occur along the west coast of North America and on many islands of the Pacific Ocean.