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The Influence of Fluvial Bar Morphodynamics on Microplastic Distribution
Summary
This study used computer simulations to model how river flooding affects where microplastics (tiny plastic particles) settle and pile up on river sandbars. The researchers found that flood size matters—bigger floods move microplastics differently than smaller ones—which helps explain why plastic pollution builds up in certain river spots more than others. This matters because rivers carry microplastics into water supplies and eventually the ocean, so understanding where they accumulate can help target cleanup efforts and better assess where human exposure risk might be highest.
This repository contains the iRIC Nays2DH numerical simulation files, calculation conditions and discharge hydrographs, used to investigate the influence of fluvial bar morphodynamics on microplastic distribution. The simulations include representative small-flood and moderate-flood scenarios with peak discharges of 40 m³/s and 200 m³/s, respectively. The repository provides the input files and model outputs used to analyze the transport, deposition, and redistribution of microplastics on a river bar under varying hydraulic conditions. These materials are provided to support the reproducibility and transparency of the study.