Data for Manuscript: Tracing Sediment and Phosphorus Source Hysteresis During an Extreme Flood in a Subtropical Australian River

Résumé fourni par la source

Data and code supporting: Wynants et al., "Tracing Sediment and Phosphorus Source Hysteresis During an Extreme Flood in a Subtropical Australian River" This repository contains the datasets, processing workflows, and analysis scripts used in Wynants et al. to investigate sediment and particulate phosphorus dynamics during the March 2025 Cyclone Alfred flood event in the Albert River catchment, southeast Queensland, Australia. The repository is organised into four main folders: 1. rawdata Contains the primary geospatial geochemistry dataset and associated source material data used for sediment fingerprinting analyses. The dataset includes sample metadata, sampling locations, land use information, geomorphic classifications, and elemental concentrations obtained through sequential extraction procedures. Element concentrations are reported for exchangeable, carbonate-associated, oxide-associated, recalcitrant, and total fractions on a dry-weight basis (mg kg⁻¹). 2. unmixing Contains the data and R code used for sediment fingerprinting and source apportionment. The workflow includes tracer selection, conservativeness assessment, consistent tracer selection (CTS), clustering analyses, and sediment source contribution estimation using the FingerPro mixing model and Monte Carlo uncertainty analysis. 3. rainfall Contains rainfall and hydrological analysis scripts used to calculate rainfall intensity, cumulative rainfall, long-term rainfall statistics, generate overview figures, and evaluate relationships between rainfall, suspended sediment concentrations, particulate phosphorus concentrations, and sediment source contributions. 4. loads_and_hysteresis Contains scripts used to calculate concentration-discharge hysteresis metrics, Hysteresis Indices (HI), Hysteresis Slope Indices (HSI), event-scale sediment and phosphorus loads, source-specific sediment loads, phosphorus fraction loads, and hydrograph-stage load budgets. The folder also includes routines used to generate hysteresis loop figures and associated statistical analyses. Together, these datasets and workflows provide a fully reproducible framework for sediment source tracing, particulate phosphorus characterisation, flood-event load estimation, and hysteresis analysis in a subtropical river system.

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