ARTIFICIAL ROUGHNESS IN PHYSICAL MODELS OF ESTUARIES FOR STORM SURGE INVESTIGATIONS

D. Berndt, E. Giese, H. Schwarze, H.J. Vollmers

Abstract


One of the characteristics of the North Sea between the British Isles, the Netherlands, Germany and Denmark is the occurrence of heave storm surges especially in autumn and winter with heights of about 4 m above spring highwater. Coastal areas and especially the estuaries of the tidal rivers are hit by these storm surge events. The mean tidal range at the German coast comes to about 3 m with relatively low daily and semimonthly inequalities of less than 0.5m. Within the framework of long-term developments of the navigation channels of the estuaries as well as of the storm surge protection works, physical model tests had to be carried out in order to predict the influences of such measures on the storm surge heights to be expected.

Keywords


artificial roughness; physical model; estuary; storm surge

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