N-LINE MODEL CONSIDERING A CHARACTERISTICS OF WAVE CODITION AFTER BEACH NOURISHMENT

Abstract

 The coastal erosions lead to serious problems in sandy beaches around the world. The artificial beach nourishment method has been accepted as an effective work for the restoration of shoreline in eroded area. As the coast facing the Sea of Japan tends to repeat seasonal variation, that is, the shoreline is eroded from autumn to winter and is restored between spring and summer. Therefor, a numerical N-line model which takes into account the characteristisc of wave condition after the beach noutishment is suggested.