Numerical Study on Accumulation Mechanism of Coral Gravels Around Ballast Island, the Coral Cay off the Coast of Iriomote Island

A numerical and field survey study reveals the accumulation mechanisms of coral gravels around Ballast Island, a dynamic coral cay off Iriomote Island, Okinawa. Despite severe wave attacks causing frequent shape changes to the island, coral gravels consistently gather, maintaining its position. The research identifies physical processes underlying this stability, offering critical insights for conservation strategies. By combining field observations with numerical modeling, the study sheds light on how coral coasts resist erosion and adapt to harsh environmental conditions, providing a foundation for protecting vulnerable coral ecosystems in UNESCO World Heritage Sites.

Tajima, Y. (2018). NUMERICAL STUDY ON ACCUMULATION MECHANISM OF CORAL GRAVELS AROUND BALLAST ISLAND, THE CORAL CAY OFF THE COAST OF IRIOMOTE ISLAND. Coastal Engineering Proceedings, (36), 93. https://doi.org/10.9753/icce.v36.sediment.93