PREDICTION OF FORMATION OF LAND-TIED ISLANDS

Proceedings of the International Conference on Coastal Engineering

Shiho Miyahara¹  Masumi Serizawa¹  Takaaki Uda¹ 

关键词: Land-tied island;    BG model;    beach changes;    Shodoshima Island;    Chiringashima Island;   

DOI  :  10.9753/icce.v34.sediment.7

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

When waves are incident to a sandy beach from two opposite directions, a cuspate foreland or a land-tied island may develop. A typical land-tied island can be seen offshore of Shodoshima Island in the Seto Inland Sea. Another example is Chiringashima Island located in the south part of Satsuma Peninsula, Kyushu. In both cases, the island and land are connected by an extremely slender sand bar that has been stably maintained for a long time, suggesting that it is stable against wave action from both sides of the sand bar. We developed a numerical model for predicting the elongation of a sand bar of a land-tied island using the BG model (a three-dimensional model for predicting beach changes based on Bagnold’s concept).

【 授权许可】

Unknown