離岸堤型ヘッドランド周辺から海底谷における土砂移動機構
2007 年 54 巻 p. 501-505
詳細
2007 年 54 巻 p. 501-505
Sediment carried by longshore transport moves to deep sea through the submarine canyons. The investigation of submarine topography had been conducted by narrow-multi beam echo-sounders system. Detailed bathymetric changes shows the mechanism of sediment transport from beach around coastal structures to submarine canyon. This sediment transport mainly occurs at storms related with several typhoons. Large amount of sediments appear to be migrated by sediment gravity flow at storms submarine topography and distribution pattern of bottom materials have been changed due to this processes.
