Identifying wave and turbulence components in wind-driven shallow basins

Carmelo Nasello, Giuseppe Ciraolo, János Józsa, Tamás Krámer, Krisztián Homoródi

Risultato della ricerca: Article

4 Citazioni (Scopus)

Abstract

Wind-induced waves play an important role in shallow lake hydro- and sediment dynamics. That is why field measurements are important for the validation of their estimation methods, especially in shallow waters. In the first part of the present paper a method is introduced to improve the interpretation of the measured data, applicable both for pressure and velocity data. Replacing the turbulence-affected tail of the measured spectrum with a fitted power function causes a considerable 8-10% difference in the derived bulk wave parameters so this procedure is worth to be done. In the second part an appropriate technique to obtain wave features from 3D velocity time series will be described. The applicability of the presented velocity-based estimation method will be proved by the analysis of field measurements. By velocity decomposition used for the reconstruction of wave features one could also analyse the depth-related differences in the turbulence accompanying the wave motion.
Lingua originaleEnglish
pagine (da-a)87-95
Numero di pagine9
RivistaPERIODICA POLYTECHNICA. CIVIL ENGINEERING
Volume1
Stato di pubblicazionePublished - 2012

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Turbulence
turbulence
estimation method
Lakes
Time series
Sediments
shallow water
time series
decomposition
Decomposition
lake
sediment
Water
method
analysis
parameter

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

Cita questo

Identifying wave and turbulence components in wind-driven shallow basins. / Nasello, Carmelo; Ciraolo, Giuseppe; Józsa, János; Krámer, Tamás; Homoródi, Krisztián.

In: PERIODICA POLYTECHNICA. CIVIL ENGINEERING, Vol. 1, 2012, pag. 87-95.

Risultato della ricerca: Article

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abstract = "Wind-induced waves play an important role in shallow lake hydro- and sediment dynamics. That is why field measurements are important for the validation of their estimation methods, especially in shallow waters. In the first part of the present paper a method is introduced to improve the interpretation of the measured data, applicable both for pressure and velocity data. Replacing the turbulence-affected tail of the measured spectrum with a fitted power function causes a considerable 8-10{\%} difference in the derived bulk wave parameters so this procedure is worth to be done. In the second part an appropriate technique to obtain wave features from 3D velocity time series will be described. The applicability of the presented velocity-based estimation method will be proved by the analysis of field measurements. By velocity decomposition used for the reconstruction of wave features one could also analyse the depth-related differences in the turbulence accompanying the wave motion.",
author = "Carmelo Nasello and Giuseppe Ciraolo and J{\'a}nos J{\'o}zsa and Tam{\'a}s Kr{\'a}mer and Kriszti{\'a}n Homor{\'o}di",
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T1 - Identifying wave and turbulence components in wind-driven shallow basins

AU - Nasello, Carmelo

AU - Ciraolo, Giuseppe

AU - Józsa, János

AU - Krámer, Tamás

AU - Homoródi, Krisztián

PY - 2012

Y1 - 2012

N2 - Wind-induced waves play an important role in shallow lake hydro- and sediment dynamics. That is why field measurements are important for the validation of their estimation methods, especially in shallow waters. In the first part of the present paper a method is introduced to improve the interpretation of the measured data, applicable both for pressure and velocity data. Replacing the turbulence-affected tail of the measured spectrum with a fitted power function causes a considerable 8-10% difference in the derived bulk wave parameters so this procedure is worth to be done. In the second part an appropriate technique to obtain wave features from 3D velocity time series will be described. The applicability of the presented velocity-based estimation method will be proved by the analysis of field measurements. By velocity decomposition used for the reconstruction of wave features one could also analyse the depth-related differences in the turbulence accompanying the wave motion.

AB - Wind-induced waves play an important role in shallow lake hydro- and sediment dynamics. That is why field measurements are important for the validation of their estimation methods, especially in shallow waters. In the first part of the present paper a method is introduced to improve the interpretation of the measured data, applicable both for pressure and velocity data. Replacing the turbulence-affected tail of the measured spectrum with a fitted power function causes a considerable 8-10% difference in the derived bulk wave parameters so this procedure is worth to be done. In the second part an appropriate technique to obtain wave features from 3D velocity time series will be described. The applicability of the presented velocity-based estimation method will be proved by the analysis of field measurements. By velocity decomposition used for the reconstruction of wave features one could also analyse the depth-related differences in the turbulence accompanying the wave motion.

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EP - 95

JO - Periodica Polytechnica: Civil Engineering

JF - Periodica Polytechnica: Civil Engineering

SN - 0553-6626

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