Abstract
In the present paper, after a sensitivity analysis, the calibration and verification of a novel morphodynamic model have been conducted based on a high-quality field experiment data base. The morphodynamic model includes a general formula to predict longshore transport and associated coastal morphology over short- and long-term time scales. With respect to the majority of the existing one-line models, which address sandy coastline evolution, the proposed General Shoreline beach model (GSb) is suitable for estimation of shoreline change at a coastal mound made of non-cohesive sediment grains/units as sand, gravel, cobbles, shingle and rock. In order to verify the reliability of the GSb model, a comparison between observed and calculated shorelines in the presence of a temporary groyne deployed at a mixed beach has been performed. The results show that GSb gives a good agreement between observations and predictions, well reproducing the coastal evolution.
Highlights
During the last decades, researchers and engineers inspired by coastal sediment phenomena have conducted field and laboratory experiments to learn more about coastal processes and sediment dynamics
No general one-line model valid for estimation of shoreline change at a coastal mound made of non-cohesive sediment grains/units as sand, gravel, cobbles, shingle and rock has been proposed
The focus of the present paper is to propose a novel model, named the General Shoreline beach model (GSb), for predicting shoreline change for beaches made of non-cohesive sediment grains/units and to show the results of a sensitivity analysis conducted to evaluate how model output changes with changes in input variables [21,22]; the sensitivity analysis allows to assess the effects and sources of uncertainties oriented to the target to build a robust model for shoreline evolution
Summary
Researchers and engineers inspired by coastal sediment phenomena have conducted field and laboratory experiments to learn more about coastal processes and sediment dynamics. When designing a coastal protection intervention, modern Coastal Engineering extensive use of numerical models to predict impact of the designed intervention before it is implemented Within this path, the focus of the present paper is to propose a novel model, named the General Shoreline beach model (GSb), for predicting shoreline change for beaches made of non-cohesive sediment grains/units and to show the results of a sensitivity analysis conducted to evaluate how model output changes with changes in input variables [21,22]; the sensitivity analysis allows to assess the effects and sources of uncertainties oriented to the target to build a robust model for shoreline evolution. The calibration and verification of the GSb model for predicting shoreline change at a mixed beach are performed based on a high-quality field experiment data base [23,24,25]
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