Seiche

A seiche (/seɪʃ/ SAYSH) is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbors, caves, and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave.

The term was promoted by the Swiss hydrologist François-Alphonse Forel in 1890, who was the first to make scientific observations of the effect in Lake Geneva.^[1] The word had apparently long been used in the region to describe oscillations in alpine lakes. According to Wilson (1972),^[2]^[3] this Swiss French dialect word comes from the Latin word siccus meaning "dry", i.e., as the water recedes, the beach dries. The French word sec or sèche (dry) descends from the Latin.

Seiches in harbours can be caused by long-period or infragravity waves, which are due to subharmonic nonlinear wave interaction with the wind waves, having periods longer than the accompanying wind-generated waves.^[4]

^ Darwin, G. H. (1898). The Tides and Kindred Phenomena in the Solar System. London: John Murray. pp. 21–31.
^ Rabinovich, Alexander B. (2018). "Seiches and Harbor Oscillations". Handbook of Coastal and Ocean Engineering. World Scientific. pp. 243–286. doi:10.1142/9789813204027_0011. ISBN 978-981-320-401-0.
^ Wilson, Basil W. (1972). Seiches. Advances in Hydroscience. Vol. 8. Elsevier. pp. 1–94. doi:10.1016/b978-0-12-021808-0.50006-1. ISBN 978-0-12-021808-0.
^ Munk, Walter H. (1950). Origin and generation of waves. 1st International Conference on Coastal Engineering, Long Beach, California. Council on Wave Research, American Society of Civil Engineers. doi:10.9753/icce.v1.1. ISSN 2156-1028. Archived from the original on 2017-01-11. Retrieved 2017-04-19.

[1] Darwin, G. H. (1898). The Tides and Kindred Phenomena in the Solar System. London: John Murray. pp. 21–31.

[2] Rabinovich, Alexander B. (2018). "Seiches and Harbor Oscillations". Handbook of Coastal and Ocean Engineering. World Scientific. pp. 243–286. doi:10.1142/9789813204027_0011. ISBN 978-981-320-401-0.

[3] Wilson, Basil W. (1972). Seiches. Advances in Hydroscience. Vol. 8. Elsevier. pp. 1–94. doi:10.1016/b978-0-12-021808-0.50006-1. ISBN 978-0-12-021808-0.

[Munk-4] Munk, Walter H. (1950). Origin and generation of waves. 1st International Conference on Coastal Engineering, Long Beach, California. Council on Wave Research, American Society of Civil Engineers. doi:10.9753/icce.v1.1. ISSN 2156-1028. Archived from the original on 2017-01-11. Retrieved 2017-04-19.

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