Wave Measurements
Oral
Mario de Souza e Silva, MSc
Doctorate Student
Federal University of Rio de Janeiro
Paulo Cesar Rosman
Federal University of Rio de Janeiro
Claudio Neves
Federal University of Rio de Janeiro
Nils Kerpen
Ludwig-Franzius-Institute for Hydraulic, Estuarine and Coastal Engineering
Torsten Schlurmann
Ludwig-Franzius-Institute for Hydraulic, Estuarine and Coastal Engineering
The aim of this study is to investigate the Bichromatic-Bidirectional waves to characterize the additive and subtractive wave-wave nonlinear interactions, using adaptive techniques rather than traditional spectral techniques. A physical model test in a 3D-wave basin was conducted and measurements were made with two arrays of ultrasonic sensors of free surface and one array of ADVs. The Hilbert-Huang transform, aided by the Multivariate Empirical Mode Decomposition, was applied to the orbital velocity data and the main characteristics of the infragravity wave (amplitude, period, direction) were extracted with a good precision.