Upon transport to the ocean,
sediment can be transported further by wave-induced longshore sediment
transport in delta–shoreface depositional systems. Nonetheless, the nature of relations
between sediment supply and wave reworking is poorly understood, yet has
implications regarding shoreline and stratigraphic evolution. Using a numerical
model of shoreline dynamics, Li et al. quantify the relation between
wave-induced longshore sediment transport and shoreline orientation under conditions
of steady sea level, and apply the insights to a case study of the Po
delta-shoreface system. The results reveal that a decrease in delta
progradation rate can in part be considered as an autogenic response to steady
wave conditions offshore. They conclude by suggesting that wave-induced
longshore sediment transport can markedly impact deltaic and adjacent shoreface
shoreline progradation rates, and as such, has sequence stratigraphic
implications as well.
The impact of wave-induced longshore transport on a delta–shoreface system by Liang Li, Dirk-Jan R. Walstra, and Joep E.A. Storms
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