Abstract
Cross-shore beach profile data from field measurements performed at six locations on the southern coast of the Caspian Sea are used to investigate bathymetry change due to various wave conditions. Beach profile measurements are analyzed and subsequently compared with the results of a berm formation and erosion model. The model comprises distinct empirical sediment transport equations for predicting the cross-shore sediment transport rate under various wave conditions. To yield a berm formation and erosion model, empirical cross-shore sediment transport equations are combined with the mass conservation equation. Simulations results obtained from the model compared well with the measurements, proving the capability of the model in simulating berm formation and erosion evolution.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/FTgAr73h5rA
Highlights
Coastal regions experience different waves and tidal levels continuously; beach face responds to fluid motion
It is noteworthy that multiple simulations of berm formation and erosion in various locations with different wave conditions can offer a better judgment regarding the model performance
This study focused on berm formation and erosion at the southern coasts of the Caspian Sea
Summary
Coastal regions experience different waves and tidal levels continuously; beach face responds to fluid motion. Many different complex processes from offshore to onshore should be considered when modeling sediment transport mechanisms and beach profile responses. A numerical model was used to predict berm formation and erosion under various wave conditions and timescales. It is noteworthy that multiple simulations of berm formation and erosion in various locations with different wave conditions can offer a better judgment regarding the model performance. Larson and Kraus (1989) utilized data from Japanese, American, and Canadian beaches for the classification of erosion and accretion events They hypothesized a relationship between sand fall velocity and wave characteristics. The model comprised different berm formation and erosion sub-modules based on wave run-up to estimate the sediment transport rate. The berm will form and further develop (see Fig. 3)
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