VELOCITY FIELD MEASUREMENTS IN A "COASTAL BUFFER ZONE"

Proceedings of the International Conference on Coastal Engineering

Hirofumi Hinata¹  Hiroshi Yagi¹  Kazuo Nadaoka² 

[1] Department of Civil Engineering, Tokyo Institute of Technology;Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology

关键词: buffer zone;    velocity field;    velocity measurements;   

DOI  :  10.9753/icce.v25.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

To investigate the characteristics of flow field in the coastal buffer zone (C.B.Z.), velocity measurements in a field were performed both in non-stratified and stratified conditions. The results of the data analysis have shown that in the non-stratified condition wind action, together with tidal motion, may induce unexpectedly large velocity even near the bottom with the magnitude beyond the threshold of the sediment movement, suggesting that the appreciable sediment transport may be caused by these wind-driven currents in C.B.Z.. In the stratified condition, it is revealed that internal tides with baroclinic velocity fluctuation may dominate the cross-shore exchanging motion of water mass.

【 授权许可】

Unknown