SEEPAGE EFFECTS ON SEDIMENT TRANSPORT BY WAVES AND CURRENTS
No. 26 (1998), Conference Proceedings
No. 26 (1998)

SEEPAGE EFFECTS ON SEDIMENT TRANSPORT BY WAVES AND CURRENTS

Conference Proceedings
https://doi.org/10.9753/icce.v26.%25p
Published 1998-01-29
T.E. Baldock
School of Civil and Structural Engineering, University of Plymouth
P. Holmes
Department of Civil Engineering, Imperial College of Science, Technology and Medicine
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Keywords

seepage effects
sediment transport
current

How to Cite

Baldock, T., & Holmes, P. (1998). SEEPAGE EFFECTS ON SEDIMENT TRANSPORT BY WAVES AND CURRENTS. Coastal Engineering Proceedings, 1(26). https://doi.org/10.9753/icce.v26.%p
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Abstract

This paper considers the influence of seepage on the motion and transport of sediment. Under wave motion, steady upwards seepage (injection) increased erosion, while downwards seepage (suction) stabilised the bed. Conversely, seepage in the presence of a steady flow produced negligible changes in the sediment motion. A theoretical analysis examines the stability of the sediment particles and sediment bed under these conditions and provides an explanation for the different seepage effects. Seepage across the sediment/fluid interface also had a strong influence on the growth of sand ripples, even at pressure gradients of order 0.1. These results suggest that ripple dynamics in the nearshore may be affected by the watertable level and drainage within a beach.
https://doi.org/10.9753/icce.v26.%25p
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