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Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location.
The highest water level ever recorded, 21.6 metres (71 feet), occurred in October 1869. It caused extensive destruction to ports and communities, much of which was attributed to a two-metre storm surge created by the Saxby Gale , a tropical cyclone , which coincided with a perigean spring tide .
The tide gauge at Burntcoat Head was operated by the Canadian Hydrographic Service and has recorded the highest tidal range in the world. Currently, the tidal gauge is no longer in operation. Tides at Burntcoat Head average 55.8 ft (17.0 m), with the highest being set during the 1869 Saxby Gale at 70.9 ft (21.6 m).
In coastal areas, because the ocean tide is quite out of step with the Earth tide, at high ocean tide there is an excess of water above what would be the gravitational equilibrium level, and therefore the adjacent ground falls in response to the resulting differences in weight. At low tide there is a deficit of water and the ground rises.
More precisely, the lunar tidal acceleration (along the Moon–Earth axis, at the Earth's surface) is about 1.1 × 10 −7 g, while the solar tidal acceleration (along the Sun–Earth axis, at the Earth's surface) is about 0.52 × 10 −7 g, where g is the gravitational acceleration at the Earth's surface.
The deeper tides will start Friday and continue through Monday, and can run 6 inches to a foot higher than a typical high tide in the summer. The king tides will return later in the fall, Oct. 27 ...
The long and narrow rectangular shape of the Adriatic Sea is the source of an oscillating water motion (called seiche) along the basin's minor axis. [5]The principal oscillation, which has a period of 21 hours and 30 minutes and an amplitude around 0.5 meters at the axis' extremities, supplements the natural tidal cycle, so that the Adriatic Sea has much more extreme tidal events than the rest ...
Even if the tide schedule is favorable, rough winds and rain can make these trips treacherous. Make sure you are wearing sturdy shoes with a good tread, as wet rocks, kelp, and other sea materials ...