Study on Formation Mechanism of Coral Cays on a Steep Slope Reef

Coral cays are low-lying islands formed by the gravel from coral reefs, which build up to a position slightly higher than the sea level. In past research, coral cays were reported to have formed and been disappeared by short-term high waves. The mechanisms of their destruction are uncertain, however, because of the difficulty in obtaining observation data. In this study, we investigated the topographic change mechanisms of coral cays by a laboratory model experiment and field surveys on Barasu Island, located near the north side of the Iriomote Island During the course of the study, topographic changes in sediment deposition, erosion, and movement repeatedly occurred due to the strong external forces of typhoons. The direction of sediment movement at Barasu Island qualitatively agreed with the direction of the observed external force. Moreover, although the external force was erosive in one direction, when the external force originated from two directions, the Barasu Island area expanded.

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Study on Formation Mechanism of Coral Cays on a Steep Slope Reef

Cited by 3 publications

References 1 publication

Field Survey About Formation of Coral Cays and Transport of Coral Gravelon Ballast Island

Field Survey About Formation of Coral Cays and Transport of Coral Gravelon Ballast Island

Research About Offshore Structure for Advancing Formation of Coral Cays

The Topographic Change Mechanism of Coral Cays

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