Gravel-Bed Mobility Thresholds from 45 UK Upland Riverbeds

Supplementary files for a study comparing two force-balance models for estimating sediment entrainment thresholds in gravel-bed rivers. The data likely contains grain protrusion, resistance force, and microtopography measurements from 45 upland riverbed sites across the UK. The files were authored by David Whitfield and last updated in April 2026.

Use Cases

• Compare Monte Carlo and automated point cloud segmentation approaches for estimating grain mobility thresholds based on the described methodologies.
• Analyze the sensitivity of bed mobility estimates to velocity profile roughness height based on the sensitivity analyses mentioned.
• Evaluate spatial variability of particle mobilities across different gravel-bed textures and fabrics based on the multi-site comparison.
• Validate dimensionless critical shear stress (τ*c) distributions against published values (0.02–0.1) using the site-average results (0.05–0.15).

Strengths

• Data is derived from an extensive UK-wide dataset comprising 45 upland riverbeds.
• Results for median dimensionless critical shear stress (τ*c) are provided, ranging from 0.05 to 0.15.
• The dataset is openly available under a CC-BY-4.0 license.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary file format is PDF, which may require extraction for computational analysis.

Provenance

Source

figshare, authored by David Whitfield.

Collection Method

Likely contains field measurements and derived calculations from two force-balance modeling approaches applied to riverbed data.

Time Range

null

Freshness

Last updated 2026-04-14 14:04:50; freshness should be verified.

Geography

45 upland riverbed sites across the UK.