Abstract
Complex principal component analysis (CPCA) was applied to the bottom topographic data surveyed on Ajigaura and Tokai coast in Ibaraki prefecture, in order to detect the features of topographic changes and the correlations between the changes of bottom topography and energy fluxes of the incident waves.The method for incorporating wave data into bottom sounding data was proposed in this study. The results obtained in the study confirmed the applicability of CPCA to analyze the beach topographic changes as well as the effects of wave energy fluxes on the topographic changes.
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