A two-point method for estimating wave reflection over a sloping beach

Hsien-Kuo Chang*, T. W. Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


This work presents a frequency-domain method for estimating incident and reflected waves when normally incident waves' propagating over a sloping beach in a wave flume is considered. Linear wave shoaling is applied to determine changes of the wave amplitude and phase due to variations of the bathymetry. The wave reflection coefficient is estimated using wave heights measured at two fixed wave gauges with a distance. The present model demonstrates a high capacity of estimating reflection and shoaling coefficients from synthetic wave-amplitude data. Sensitivity tests for the present model due to measurement errors of wave amplitudes and distance of two probes can more accurately predict the reflection coefficients. The measurement error of wave amplitude affects more significantly than measurement error of distance of two probes on calculating reflection coefficient of waves over a sloping bed.

Original languageEnglish
Pages (from-to)1833-1847
Number of pages15
JournalOcean Engineering
Issue number14
StatePublished - 1 Jan 2003


  • Frequency domain
  • Sloping bathymetry
  • Waves reflection

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