What are the different types of tidal patterns? What can influence the tidal pattern of a coastline?


· Diurnal tides occur once daily. There is a single high tide and a single low tide each lunar day.
· Semidiurnal tides happen twice a day. There are two high tides and two low tides a lunar day. The low tides are nearly equal in size, as are the high tides.
· Mixed or semidiurnal mixed tides also occur twice a day. These have high and low tides that are significantly different in height from each other. These unique tides are formed from diurnal and semidiurnal tides blending together in the region.
· The shape of the ocean basin or the position of the landmass in relation to the tidal wave can affect the type of tidal pattern that coast receives. This can also affect the height of the tides.

Environmental & Atmospheric Sciences

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