MEASUREMENT AND PREDICTION OF COASTAL DUNE FORMATION ON HAMAMATSU-SHINOHARA COAST

Abstract

 Morphology of sand dunes formed on the Hamamatsu-shinohara coast facing the Enshunada Sea was investigated by field observation. The development of sand dunes was numerically predicted using a model predicting the effect of both waves and windblown sand. In the field observation, development of sand dunes of a rhythmic shape similar to a sand spit was observed in the backshore area. It was found that pine trees were died in the area with a narrow sand dune owing to wave run-up or the dispersion of salinity during storm wave condition. In the numerical simulation, sand dunes were successfully reproduced when wind blew at a large angle relative to the direction normal to the shoreline.