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Mean ranges near coasts vary from near zero to 11.7 metres (38.4 feet), [4] with the range depending on the volume of water adjacent to the coast, and the geography of the basin the water sits in. Larger bodies of water have higher ranges, and the geography can act as a funnel amplifying or dispersing the tide. [5] The world's largest mean ...
It has one of the highest tidal ranges in the world — about 50 feet (15 m). [10] [11] This funnel shape, large tidal range, and the underlying geology of rock, gravel and sand, produce strong tidal streams and high turbidity, giving the water a notably brown coloration.
Notable tidal bores include those on the Petitcodiac, Maccan, St. Croix, and Kennetcook rivers. [7] Before the construction of a causeway in 1968 and subsequent siltation of the river, the Petitcodiac River had one of the world's largest tidal bores, up to two metres (6.6 ft) high. Since the opening of the causeway gates in 2010, the bore has ...
The Severn Estuary, which empties into the Bristol Channel, has one of the largest tidal ranges in the world – about 13 m (43 ft). [1] [2] It is exceeded only by the Bay of Fundy, and possibly Ungava Bay, both in Canada. [3] The tidal wave starts far out in mid-ocean. It moves towards the continent of Europe at about 700 miles (1100 km) wide.
An 1830 map showed the "Quoddy Hell-Gate" of "dangerous whirlpools" off the southern tip of Deer Island. The whirlpool is caused by local bathymetry and a 20-foot (6.1 m) tidal range [1] where waters exchange between Passamaquoddy Bay and the Bay of Fundy, combined with the topography of the location's sea floor at the confluence of the numerous local currents through channels and over small ...
Tidal flow timings and velocities appear in tide charts or a tidal stream atlas. Tide charts come in sets. Each chart covers a single hour between one high water and another (they ignore the leftover 24 minutes) and show the average tidal flow for that hour. An arrow on the tidal chart indicates the direction and the average flow speed (usually ...
For instance the chart for 3 hours after high water is valid from HW+2½ to HW+3½, not from HW+3 to HW+4. [2] Tidal atlases may provide additional information for areas such as estuaries where it important to calculate tides away from the ports. Such information may include co-tidal range information [3] and time differences. [4]
King Sound has the highest tides in Australia, and amongst the highest in the world, reaching a maximum tidal range of 11.8 metres (39 ft) at Derby. [1] The tidal range and water dynamic were researched in 1997–1998. [2] Waters within the sound are generally turbid. [3] The turbidity is associated with the erosion of tidal flats.