急勾配リーフ上のサンゴ礁州島形成・維持過程の研究

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  • Study on Formation Mechanism and Maintenance Process of Coral cays on a Steep Slope Reef
  • キュウコウバイ リーフ ジョウ ノ サンゴショウシュウトウ ケイセイ ・ イジ カテイ ノ ケンキュウ

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Coral cays may be formed by the high waves in about several days. If the initial formation mechanism of coral cays can be understood, it will be useful for protection, the environmental preservation, and use of the coral reef seashore. Moreover, it can contribute also to protection of islands in Japan and the Pacific Ocean archipelagic country where the sea level rise due to global warming may result in submersion. In this paper, 3-dimensional hydraulic movable bed model tests were conducted to clarify the coral cays formation and maintenance process. Consequently, it turned out that wave breaking at leaf edge, the relative relation between leaf size and wavelength, and the cover effect of the wave and current by formation of the coral cays are important for the coral cays formation and maintenance process.

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