Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
KOTAŠKA, S. DUCHAN, D. PELIKÁN, P. ŠPANO, M.
Originální název
Spectral analysis of oscillatory wind wave parameters in fetch-limited deep-water conditions at a small reservoir and their prediction: Case Study of the Hulín Reservoir in the Czech Republic
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The dams and banks of small water reservoirs face significant erosion from wind-generated oscillatory waves. Proper design of structure height is crucial to protect such banks against erosion, considering the maximum characteristics of wind waves. Long-term measurements at the Hulín reservoir revealed that the wave spectrum aligns best with the Bretschneider type. This spectrum serves as a basis for simulating oscillatory waves and their impact on shore protection structure design. Empirical models were evaluated using wind and wave data from Hulín reservoir in the Czech Republic. The measured wind speeds attained a maximum of 8 m/s, and wave heights reached up to 15 cm. The Bretschneider (SMB) empirical formula provided the most accurate estimation of wave height (Hm0), with an average underestimate of RMSE = 0.038 m. On the other hand, Wilson revisited (WIL rev.) performed less effectively, with an average RMSE = 0.304 m. For wave period (T) estimation, Bretschneider (SMB) yielded the best results, with an average RMSE = 0.062 s. Conversely, Wilson revisited (WIL rev.) showed poorer performance, with an average underestimate of RMSE = 2.196 s. The discrepancy between the empirical formulas and measured values, particularly in underestimating Hm0, can be attributed to inaccurate determination of fetch length and wind speed.
Klíčová slova
Oscillatory waves; Spectral analysis; Spectral density; Small closed reservoir; Wave prediction.
Autoři
KOTAŠKA, S.; DUCHAN, D.; PELIKÁN, P.; ŠPANO, M.
Vydáno
1. 2. 2024
Nakladatel
Sciendo
Místo
Bratislava, Slovak Republic
ISSN
1338-4333
Periodikum
Journal of Hydrology and Hydromechanics
Ročník
72
Číslo
1
Stát
Slovenská republika
Strany od
95
Strany do
112
Strany počet
17
URL
http://www.uh.sav.sk/jhh/Find-Issues/All-Issues?kod=72,1
Plný text v Digitální knihovně
http://hdl.handle.net/11012/245499
BibTex
@article{BUT187675, author="Stanislav {Kotaška} and David {Duchan} and Petr {Pelikán} and Miroslav {Špano}", title="Spectral analysis of oscillatory wind wave parameters in fetch-limited deep-water conditions at a small reservoir and their prediction: Case Study of the Hulín Reservoir in the Czech Republic", journal="Journal of Hydrology and Hydromechanics", year="2024", volume="72", number="1", pages="95--112", doi="10.2478/johh-2023-0042", issn="1338-4333", url="http://www.uh.sav.sk/jhh/Find-Issues/All-Issues?kod=72,1" }