TSUNAMI RUNUP AMPLIFICATION OF BREAKING AND NON-BREAKING ERROR-FUNCTION WAVES OVER A SLOPING BEACH IN SHADOW ZONE BY A SMALL ISLAND | Zendy

Sunghoon Han | Zendy; James M. Kaihatu | Zendy; Patrick Lynett | Zendy; Costas E. Synolakis | Zendy

Open Access

TSUNAMI RUNUP AMPLIFICATION OF BREAKING AND NON-BREAKING ERROR-FUNCTION WAVES OVER A SLOPING BEACH IN SHADOW ZONE BY A SMALL ISLAND

Author(s) -

Sunghoon Han,

James M. Kaihatu,

Patrick Lynett,

Costas E. Synolakis

Publication year - 2020

Publication title -

coastal engineering proceedings

Language(s) - English

Resource type - Journals

eISSN - 2156-1028

pISSN - 0589-087X

DOI - 10.9753/icce.v36v.papers.13

Subject(s) - crest , geology , superposition principle , surf zone , range (aeronautics) , breaking wave , elevation (ballistics) , shadow zone , rayleigh wave , seismology , wind wave , shadow (psychology) , surface wave , optics , geodesy , physics , geometry , wave propagation , mathematics , seismic wave , oceanography , materials science , psychology , quantum mechanics , composite material , psychotherapist

The time series of free surface elevation measured in and outside the shadow zone were compared and analyzed in the time-frequency domain by employing the continuous wavelet transform. Regardless of the conditions of the ERF wave in the shadow zone, an increase in magnitude of energy is noticeable not only in the peak frequency within a range of approximately 0.8 to 1 Hz but also in the low-frequency range of around 0.1 Hz corresponding to second up to third crest of the leading wave. To determine the effective frequency of ERF waves and evaluate their runup characteristics, we applied a new method of describing the ERF wave, which consists of linear superposition of two solitary waves. As a result, the ERF waves show the same trend in runup characteristics as for solitary waves.

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