Abstract
Abstract The reflection of wave energy from natural beaches is a quantity that is rarely measured. This paper addresses the question as to whether the reflected wave energy from a beach is an important component of energy flux from an engineering point of view. Wave run-up and wave set-up are important nearshore processes in which wave reflection appears to play a major role and, consequently, the prediction of reflected wave energy from the offshore forcing irregular wave train energy at natural beaches is a first step in a better understanding of these processes. The present paper reports on wave reflection measurements at two natural beaches with different characteristics. The issue of wave reflection is addressed via separation of input and output signals using coincident pressure and velocity measurements. In the present limited analysis, reflected wave energy was not found to be significant.
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