The Influence of Swash Infiltration-Exfiltration on Sediment Transport

Abstract

The effect on cross shore sediment transport due to seepage are investigated experimentally. The time series data of phreatic surface and height of runup wave, cross shore changes are collected in swash zone. Calculation of infiltration-exfiltration flux show that, in case of eroded beach, the beach face leads to unstable condition caused by fluidsation of upper layer of sediment. Estimating of tractive force with the uplift force due to seepage, present results indicate that the direction of sediment transport changed from onshore to offshore can be evaluated by the infiltration-exfiltration process.