Seabed Gravel, Mud and Sand Content in the Petrel Sub-Basin, Australian EEZ

Spatially continuous raster data of seabed gravel, mud, and sand content expressed as weight percentages from 0 to 100%. The dataset covers the Petrel sub-basin in the Australian continental Exclusive Economic Zone at a 0.0025 decimal degree resolution. It supersedes previous predictions with demonstrated improvements in accuracy, though accuracy varies based on sample density and seabed complexity.

Use Cases

• Modeling seabed habitat suitability based on sediment composition fractions.
• Planning offshore infrastructure projects based on substrate stability predictions.
• Conducting basin-scale geological studies based on continuous sediment distribution maps.
• Calibrating remote sensing data with ground-truth sediment samples.

Strengths

• Provides continuous predictions at a 0.0025 decimal degree resolution.
• Supersedes previous predictions with demonstrated improvements in accuracy.
• Covers the entire Petrel sub-basin within the Australian EEZ.

Limitations

• Accuracy varies and artefacts occur in regions with insufficient underlying samples.
• Intended for basin-scale use; may not be appropriate for smaller-scale analysis in undersampled areas.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Prediction and interpolation of sediment samples, presented as raster grids.

Freshness

Last updated 2026-04-20 02:19:59.854743

Geography

Petrel sub-basin, Australian continental Exclusive Economic Zone (EEZ)