WAVE GROUP ANALYSIS BY THE HILBERT TRANSFORM

Robert T. Hudspeth, Josep R. Medina

Abstract


A methodology based on linear theory is presented for analyzing wave groups from a random sea representation in the complex plane. A wave height function [H(t)], a local frequency function, [0(t)] , and an orbital velocity function [V(t)] are defined from the Hilbert transform of the sea surface elevation. Envelopes computed by the Hilbert transform are compared with the SIWEH. A three axes representation of the mean lengths of runs of waves is employed to compare the lengths of runs computed by the discrete wave method with runs computed by the Hilbert transform method.

Keywords


wave group; group analysis; Hilbert Transform

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.