INTERACTION BETWEEN TWO CIRCULAR SANDY ISLANDS ON FLAT SHALLOW SEABED OWING TO WAVES

[摘要] On a flat shallow seabed, sand spits and cuspate forelands with rhythmic shapes may develop and a barrier island can elongate alongshore, which significantly differs from the beach changes on coasts facing a deep ocean. In this study, the interaction between two circular sandy islands on a flat shallow seabed owing to waves was investigated by numerical simulation, focusing on the wave-sheltering effect of the islands themselves. The topographic changes caused by the interaction between two sandy islands were predicted using the BG model (a three-dimensional model for predicting beach changes based on Bagnold’s concept).

[学科分类] 建筑学

[关键词] Circular isl;s;topographic changes;interaction;wave-sheltering effect;BG model