Articles | Volume 17, issue 6
Research article
11 Nov 2021
Research article |  | 11 Nov 2021

A tidally driven fjord-like strait close to an amphidromic region

Sissal Vágsheyg Erenbjerg, Jon Albretsen, Knud Simonsen, Erna Lava Olsen, Eigil Kaas, and Bogi Hansen

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Cited articles

Campbell, A. R., Simpson, J. H., and Allen, G. L.: The Dynamical Balance of Flow in the Menai Strait, Estuar. Coast. Shelf S., 46, 449–455,,1998. 
Danmarks Meteorologiske Institut (DMI): Homepage, available at:, last access: 4 November 2021. 
Davidsen, E., Førland, E., and Madsen, H.: Orographically enhanced precipitation on the Faroe Islands, in: Nordic Hydrological Program (NHP) Report, Hydrological Conference 1994, Nordic Association for Hydrology, Tórshavn, Faroe Islands, 229–239, 1994. 
Dyer, K. R.: Estuaries: a physical introduction, John Wiley, Chichester, New York, ISBN 978-0-471-97471-0, 210 pp., 1997. 
Erenbjerg, S. V., Albretsen, J., Simonsen, K., Sandvik, A. D., and Kaas, E.: A step towards high resolution modeling of the central Faroe shelf circulation by FarCoast800, Reg. Stud. Mar. Sci., 40, 101475,, 2020a. 
Short summary
Here, we describe a strait that has narrow and shallow sills in both ends and is close to an amphidromic region. This generates tidally driven flows into and out of the strait, but with very different exchange rates across the entrances in both ends so that it behaves like a mixture between a strait and a fjord. Using a numerical model, we find a fortnightly signal in the net transport through the strait, generated by long-period tides. Our findings are verified by observations.