APPLYING BIVARIATE HHT TO HORIZONTAL VELOCITIES
No. 32 (2010), Waves
No. 32 (2010)

APPLYING BIVARIATE HHT TO HORIZONTAL VELOCITIES

Waves
https://doi.org/10.9753/icce.v32.waves.66
Published 2011-02-02
Theo Garcia Rolim de Moura
National Laboratory of Civil Engineering
Claudio Freitas Neves
Federal University of Rio de Janeiro
José Claudio de Faria Telles
Federal University of Rio de Janeiro
Proceedings of the 32nd International Conference
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Keywords

Hilbert-Huang Transform
wave-wave interaction
orbital velocities

How to Cite

Moura, T. G. R. de, Neves, C. F., & Telles, J. C. de F. (2011). APPLYING BIVARIATE HHT TO HORIZONTAL VELOCITIES. Coastal Engineering Proceedings, 1(32), waves.66. https://doi.org/10.9753/icce.v32.waves.66
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Abstract

The Hilbert-Huang Transform (HHT) is extended to the time series analysis of wave orbital velocities resulting from the superposition of waves propagating in different directions. On a theoretical basis, it is shown that an apparently chaotic velocity signal may result from the interaction of three or more waves, each one with its own period and direction of propagation. Such result is compatible with records of PUV instruments. The comparison between bivariate HHT with Fourier directional analysis shows several advantages of the former, such as identification of wave groups and non-linear interaction components.
https://doi.org/10.9753/icce.v32.waves.66
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