Seabed Gravel Content Across the Australian Continental EEZ

Geoscience Australia's 2011 dataset provides a spatially continuous, 0.01-degree resolution raster predicting seabed gravel content across Australia's Exclusive Economic Zone. This national-scale model supersedes previous predictions with demonstrated improvements in accuracy, though artifacts exist in regions with insufficient sample density. The dataset excludes territories like Macquarie Island and the Australian Antarctic Territory.

Use Cases

• Modeling seabed habitats based on sediment composition for marine conservation planning.
• Assessing aggregate resource potential within Australia's marine jurisdiction.
• Informing regional environmental impact assessments for offshore infrastructure projects.
• Calibrating broader oceanographic or geological models with sediment distribution data.

Strengths

• Provides a continuous prediction at a specific 0.01 decimal degree resolution.
• Supersedes previous models with demonstrated improvements in accuracy for the Australian Margin.
• Explicitly documents intended scale of use (national/regional) and known artifact causes.

Limitations

• Contains artifacts in regions with insufficient underlying sample data.
• Explicitly not recommended for local-scale analysis in data-sparse areas.
• Metadata completeness is low, with no column, row, size, or license information provided.

Provenance

Source

Geoscience Australia Data

Collection Method

Prediction and interpolation from seabed sediment samples, presented as a raster.

Time Range

2011

Freshness

Last updated 2026-04-30, though the underlying data is from 2011.

Geography

Australian continental Exclusive Economic Zone, including Tasmania, excluding remote territories and Antarctic jurisdiction.