Study on movement of coral fragments and coral sand in the Okinotorishima Island

Akiyoshi NAKAYAMA, Kouji WATANABE, Shuichi YMAMOTO
2008 PROCEEDINGS OF COASTAL ENGINEERING JSCE  
This study examined movement of coral fragments and coral sand in the Okinotorishima islands in case of high-energy wave. Wave and current around the island were estimated by the modified Boussinesq equation. Movement of coral fragments and coral sand were calculated by using the formula of saltation for gravel and sand , and instantaneous velocity calculated by the former model. The extent of coral fragments transportation and the amount of sand transportation were made clear. Calculations
more » ... carried out in case of four wave directions such as north , south, east and west.
doi:10.2208/proce1989.55.1096 fatcat:scd2i2lts5ag3ghaoqxxdfgynm