Editing Seiche (section)

==Engineering for seiche protection==
{{Expand section|date=June 2008}}
{{see also|Coastal engineering}}
Engineers consider seiche phenomena in the design of flood protection works (e.g., [[Saint Petersburg Dam]]), [[Reservoir (water)|reservoir]]s and dams (e.g., [[Grand Coulee Dam]]), potable water storage basins, harbours, and even spent nuclear fuel storage basins. Structures and beach-dune systems are particularly vulnerable to damage from high water levels. [[Wetland]]s may be severely affected even by small fluctuations in water levels, and therefore historical and predicted water level fluctuations are crucial data for any coastal design. Information on seiches, along with [[storm surge]]s, and tidal fluctuations is essential.<ref name=":0">{{Cite book |last=Kamphuis |first=J. W. |url=https://www.worldcat.org/title/ocm45698321 |title=Introduction to coastal engineering and management |date=2000 |publisher=World Scientific |isbn=978-981-02-3830-8 |series=Advanced series on ocean engineering |location=Singapore ; River Edge, N.J |oclc=ocm45698321 |access-date=2 August 2024}}</ref>

The [[Frequency|period]] of a seiche depends on the size and depth of the [[Drainage basin|basin]] in which it occurs. If an incoming [[Wave packet|wave train]] has a period similar to the natural frequency of the harbour, each wave will amplify the seiche's intensity, resulting in rougher waters within the harbour compared to the surrounding sea, which can create problems for shipping. The [[MOSE|levels of high water in Venice]] for example, are the result of a combination of storm surge, barometric surge and seiches.<ref name=":0" /><ref>{{Cite book |author-link=United States Army Corps of Engineers |url=https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_1110-2-1607.pdf |title=Tidal Hydraulics |date=15 March 1991 |publisher=[[USACE]] |edition=EM 1110-2-1607 |location=Washington, DC |access-date=2 August 2024}}</ref>