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    • REVEALING THE HIDDEN STRUCTURE OF COASTAL SEDIMENT TRANSPORT PATHWAYS USING LAGRANGIAN COHERENT STRUCTURES

    STUART G. PEARSON,AD RENIERS,BRAM VAN PROOIJEN

    Coastal Sediments 2023（2023）

    Delft University of Technology

    Cited 0|Views7
    Abstract
    Coastal Sediments 2023, pp. 1212-1221 (2023) No AccessREVEALING THE HIDDEN STRUCTURE OF COASTAL SEDIMENT TRANSPORT PATHWAYS USING LAGRANGIAN COHERENT STRUCTURESSTUART G. PEARSON, AD RENIERS, and BRAM VAN PROOIJENSTUART G. PEARSONDelft University of Technology, Department of Hydraulic Engineering, Delft, 2600GA, The NetherlandsDeltares, Department of Applied Morphodynamics, Delft, 2600MH, The Netherlands, AD RENIERSDelft University of Technology, Department of Hydraulic Engineering, Delft, 2600GA, The Netherlands, and BRAM VAN PROOIJENDelft University of Technology, Department of Hydraulic Engineering, Delft, 2600GA, The Netherlandshttps://doi.org/10.1142/9789811275135_0113Cited by:0 (Source: Crossref) PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail Abstract: Understanding coastal sediment transport pathways is essential for effective management of coastal systems. To quantify the patterns underlying these pathways (Lagrangian Coherent Structures), we calculate Finite Time Lyapunov Exponents (FTLE) in the sediment transport velocity field using a sediment transport particle tracking model, SedTRAILS. We simulate an idealized sandy tidal inlet system over the course of a single tidal cycle. Here we show that FTLE patterns indicate barriers to sediment transport and zones of sediment dispersal. These patterns can be used to inform strategic placement of sediment for coastal nourishments and to develop testable hypotheses explaining sediment pathways. The spatial patterns of LCS vary in space and time with the different stages of the tidal cycle. Areas of convergence corresponding to backward LCS ridges are barriers to transport, while areas of divergence corresponding to forward LCS ridges are highly dispersive. This approach also presents new opportunities for testing hypotheses about the patterns underlying sediment transport pathways. FiguresReferencesRelatedDetails Recommended Coastal Sediments 2023Metrics History PDF download
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    Sediment Transport,Coastal Dynamics,Coastal Vulnerability,Coastal Management
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