Predicted Seabed Sediment Composition in Australia's Vlaming Sub-Basin

Spatially continuous predictions of seabed gravel, mud, and sand content, expressed as weight percentages from 0 to 100%. The dataset covers the Vlaming sub-basin within the Australian continental Exclusive Economic Zone, presented as 0.0025 decimal degree resolution raster grids. It was produced by the Australian Ocean Data Network and supersedes previous predictions with demonstrated improvements in accuracy.

Use Cases

• Modeling benthic habitat suitability by analyzing correlations between predicted mud content and known biological communities.
• Assessing sediment stability for offshore infrastructure planning using spatial layers of gravel, sand, and mud percentages.
• Validating and updating regional sediment transport models with the 0.0025 dd resolution raster grids of grain size fractions.
• Identifying data gaps for future sampling campaigns by locating areas where prediction artifacts indicate insufficient underlying sample density.

Strengths

• Provides three continuous prediction layers (gravel, mud, sand) at a 0.0025 decimal degree spatial resolution.
• Supersedes previous predictions for the basin with demonstrated improvements in accuracy.

Limitations

• Prediction accuracy varies and artifacts are present in regions with insufficient underlying sample data.
• The dataset is intended for basin-scale use and may not be appropriate for high-resolution, local-scale analysis.
• Specific sample size (row count) and quantitative accuracy metrics for predictions are not provided.

Provenance

Source

Australian Ocean Data Network

Collection Method

Spatial interpolation and prediction from seabed samples, presented as raster grids.

Time Range

2013

Freshness

Last updated record indicates 2026-04-04, but the underlying predictive model and data are from 2013.

Geography

Vlaming sub-basin within the Australian continental Exclusive Economic Zone (EEZ).