What type of tidal cycle is commonly found in the Atlantic and Pacific Oceans?

The commonly found tidal cycle in the Atlantic and Pacific Oceans is semidiurnal. This type of tidal cycle is characterized by two high tides and two low tides each lunar day, which is about 24 hours and 50 minutes long. The periodic rise and fall of the sea level that occurs in these oceans typically reflects this pattern, with the heights of the high tides and low tides being relatively consistent throughout the cycle.

In contrast, diurnal tides, where there is only one high tide and one low tide in a lunar day, are more prevalent in certain areas such as the Gulf of Mexico and other specific locales. Mixed tides, which combine elements of both diurnal and semidiurnal tides, can occur in certain regions along the coastlines but do not dominate across large oceanic areas. Monomodal is not a standard term used to describe tidal cycles and does not directly relate to the typical patterns observed in oceans. Therefore, the semidiurnal pattern is most representative and widespread in both the Atlantic and Pacific Oceans.