Physical mobile bed models were used to study the morphological effects of groins on an initially straight beach that was exposed to obliquely incident irregular waves. The tests were carried out at two different wave basins with the beach length of 8 and 28 m. A straight beach in the absence of groins was tested for each set of variables, then one or two impermeable surface piercing groins with different lengths were installed and tested. A detailed morphological and hydrodynamic data base was acquired which can be used for calibration and verification of numerical morphology models. Testing procedure and conditions are explained and typical results are presented along with a preliminary analysis which reveals the significant features of the evolution of beach bathymetry.
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