MODEL STUDY ON THE CHANGE OP SHORELINE OF SANDY BEACH BY IHE OFFSHORE BREAKWATER

Kinji Shinohara, Tooichiro Tsubaki

Abstract


This paper presents some results of experiment made to clarify the changes of shoreline taken place by the construction of offshore breakwater, the amount of sand deposits within the region sheltered by the breakwater and the sand movement at the sandy beach through the progress of beach deformation up to the accomplishment of the equilibrium profile. The initial profiles are made by the waves of two kinds of wave steepness it = 0.0192 and Oe = 0.0461 and the new equilibrium profile of sandy beach is formed by sending again the wave of the same steepness in the state of existence of offshore breakwater.

Keywords


model study; shoreline change; offshore breakwater; sandy beach



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