SEDIMENT EXCHANGE BETWEEN THE SUB-AQUEOUS AND SUB-AERIAL COASTAL ZONES.

Proceedings of the International Conference on Coastal Engineering

Roshanka Ranasinghe¹  Matthieu de Schipper¹  Sierd de Vries¹  Marcel Stive¹ 

[1] Delft University of Technology

关键词: Aeolian transport;    Morphological measurements;    active profile;    coastline change;   

DOI  :  10.9753/icce.v32.sediment.42

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The coastal system consists of a sub-aqueous and a sub-aerial zone which can be separated by a border. At this border sediment exchange takes place from one zone to the other. This paper hypothesizes that conditions and therefore sediment exchange at this border are dependent on active profile characteristics. To analyze morphological developments due to combined marine and aeolian processes data acquired at a measurement site located along the southwest Holland coast is exploited. Based on the monthly morphological profile measurements the border between the marine and aeolian zone is determined. It is found that during accretive conditions the vertical location of this border, and with that the conditions near the border, is dependent not on the foreshore slope of the surf/swash zone as expected but on the slope of the entire active profile.

【 授权许可】

Unknown