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Coastal water level variations
Published in Dominic Reeve, Andrew Chadwick, Christopher Fleming, Coastal Engineering, 2018
Dominic Reeve, Andrew Chadwick, Christopher Fleming
Water level oscillations in basins, lakes, harbours and estuaries are sometimes referred to as ‘seiches’. The crucial ingredient is that the body of water be partially constrained, so standing waves can form. Regular geometry is not a necessity as even harbours with highly irregular shapes can support seiches with very stable frequencies. The cause of seiches varies but can include the wind, earthquakes, long-period waves and low pressure atmospheric storms.
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
Seiche - (1) A standing wave oscillation of an enclosed water body that continues, pendulum fashion, after the cessation of the originating force, which may have been either seismic or atmospheric. (2) An oscillation of a fluid body in response to a disturbing force having the same frequency as the natural frequency of the fluid system. Tides are now considered to be seiches induced primarily by the periodic forces caused by the sun and moon.
All About Wave Equations
Published in Bahman Zohuri, Patrick J. McDaniel, Electrical Brain Stimulation for the Treatment of Neurological Disorders, 2019
Bahman Zohuri, Patrick J. McDaniel
A seiche 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 and seas. The key requirement for the formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave.2
Transverse surface waves in steady uniform and non-uniform flows through an array of emergent and slightly submerged square cylinders
Published in Journal of Hydraulic Research, 2020
Meriem Chetibi, Sebastien Proust, Saadia Benmamar
The periodic free surface oscillations observable in laterally confined steady open-channel flows are also termed the “seiche phenomenon”. Ilich (2006) states that a seiche is the oscillating response of an enclosed body of water, which acts to return the system to equilibrium. Rabinovich (2009) defines a seiche as “long-period standing oscillations in an enclosed basin or in a locally isolated part of a basin”. Seiches have been exhaustively studied in not only lakes and harbours (e.g. Chen, Lee, Wu, & Lee, 2013; Wang, Zheng, Liang, & Zheng, 2014), but also in laboratory open-channel flumes in the case of streamwise uniform flows through arrays of emerged circular cylinders (e.g. Dupuis, Proust, Berni, & Paquier, 2016; Ghomeshi, Mortazavi-Dortazavi, & Falconer, 2007; Jafari, Ghomeshi, Bina, & Kashefipour, 2010; Viero, Pradella, & Defina, 2016; Zhao, Cheng, & Huang, 2014; Zima & Ackermann, 2002) or submerged circular cylinders (Jafari et al., 2010; Sarkar, 2012). The seiche phenomenon is a physical process of prime importance in laterally confined open-channel flows since the seiche amplitude A can reach 40 of the time-averaged flow depth D (Jafari et al., 2010).