BERM FORMATION AND BERM EROSION

Proceedings of the International Conference on Coastal Engineering

Kazumasa Katoh¹  Shin-ichi Yanagishima¹ 

[1] Littoral Drift Laboratory, Port and Harbour Res. Inst.

关键词: erosion;    berm formation;    berm erosion;   

DOI  :  10.9753/icce.v23.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

To investigate the mechanism of beach erosion in a storm, a daily survey of beach profile and the measurement of infragravity waves near the shoreline have been carried out in a field during two and half years. Analyses of these data reveal that the infragravity waves and the level rising of water table play a important role in the berm erosion in a storm. The infragravity waves run up beyond the berm crest to the backshore. The swashed water permeates into the beach, which contributes to a high water table. The permeated water rises to the surface of foreshore, where the beach is eroded by the backwash of infragravity waves.

【 授权许可】

Unknown