Flood-scale bedload transport estimation from acoustic measurements and 2D hydro-sedimentary modelling in the Upper Moselle River

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This dataset provides field observations and modelling outputs used to investigate bedload transport dynamics during a moderate flood event in the upper Moselle River (north-eastern France). It was collected and processed to compare two complementary approaches: (i) bedload fluxes derived from acoustic monitoring, and (ii) bedload fluxes simulated by a two-dimensional hydro-sedimentary model. Results highlight differences in instantaneous fluxes but convergence in cumulative fluxes, with acoustic monitoring capturing clockwise hysteresis and early sediment mobilization, while the model provided discharge-dependent responses.

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creationSep 4, 2025revisionSep 7, 2025publicationSep 7, 2025

Temporal CoverageJan 23, 2018Mar 7, 2020

Overview

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Raw field measurements are provided together with processed outputs. Bedload sampling was conducted with a Helley-Smith sampler and complemented by surface and subsurface grain-size analyses. Water levels were monitored by limnimeters, flow velocities by ADCP surveys, and bedload dynamics by passive acoustic monitoring with fixed and drifting hydrophones. Acoustic fluxes were estimated from self-generated noise recordings, extrapolated across the section using acoustic maps and calibrated against direct samples. Numerical simulations were performed with Telemac-2D coupled with Sisyphe, using transport capacity equations parameterized with in situ data. Each processing step (signal filtering, calibration, modelling) is documented through dedicated subfolders and MATLAB scripts to ensure reproducibility.