Tidal range

Tidal range is the difference in height between
Larger tidal range occur during
By contrast, during
Tidal data for coastal areas is published by
Mean tidal range is calculated as the difference between
Geography
The typical tidal range in the open ocean is about 1 metre (3 feet) – mapped in blue and green at right. 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 tidal range of 11.7 metres (38.4 feet) occurs in the
Some of the smallest tidal ranges occur in the Mediterranean, Baltic, and Caribbean Seas. A point within a tidal system where the tidal range is almost zero is called an amphidromic point.
Classification
The tidal range has been classified[9] as:
- Micro-tidal – when the tidal range is lower than 2 metres (6'6¾").
- Meso-tidal – when the tidal range is between 2 metres and 4 metres (6'6¾" and 13'1½").
- Macro-tidal – when the tidal range is higher than 4 metres (13'1½").
See also
- King tide, an informal term for an especially high spring tide
References
- ^ "Hydrographic and Oceanographic Agencies". Archived from the original on 2010-03-25. Retrieved 2010-01-17.
- ^ NOAA. "Tidal Datums". Retrieved 26 Mar 2019.
- JPL, Scientific Visualization Studio, and Television Production NASA-TV/GSFC
- ^ a b c d e NOAA. "FAQ Where are the highest tides?". Retrieved 20 Aug 2021.
- ^ NOAA. "It appears that the range of the tides gets larger the further the location from the equator. What causes this??". Retrieved 23 Oct 2020.
- ^ NOAA. "The highest tide in the world is in Canada". Retrieved 23 Oct 2020.
- ^ a b Charles T. O'Reilly, Ron Solvason, and Christian Solomon. "Resolving the world's largest tides", in J.A. Percy, A.J. Evans, P.G. Wells, and S.J. Rolston (Editors) 2005: The Changing Bay of Fundy: Beyond 400 years. Proceedings of the 6th Bay of Fundy Workshop, Cornwallis, Nova Scotia. Sackville, NB.
- ^ "Tidal range". SurgeWatch. University of Southampton / National Oceanography Centre / British Oceanography Data Centre.
- ISSN 0749-0208.