Seabed Gravel Content Across the Australian Continental EEZ, 2011

The Australian continental Exclusive Economic Zone, including waters around Tasmania, is covered by a spatially continuous raster dataset of seabed gravel content. The data expresses the weight percentage of sediment fraction greater than 2000 µm, with a resolution of 0.01 decimal degrees. This dataset supersedes previous predictions with improved accuracy, though accuracy varies with underlying data density and seabed complexity.

Use Cases

• Modeling seabed habitat suitability based on sediment gravel content mentioned in the description.
• Assessing marine resource potential based on spatially continuous sediment data.
• Planning regional environmental monitoring based on predicted sediment distribution.
• Identifying areas requiring additional seabed sampling based on described data artifacts.

Strengths

• Spatially continuous coverage of the Australian continental EEZ.
• Data supersedes previous predictions with demonstrated improvements in accuracy.
• Provides gravel content as a weight percentage from 0 to 100%.
• Presented in a 0.01 decimal degree resolution raster format.

Limitations

• Artefacts occur due to insufficient samples in some regions.
• Accuracy varies based on underlying data density and seabed complexity.
• Not recommended for local-scale use where sample density is insufficient.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Prediction and interpolation, superseding previous models.

Time Range

2011

Freshness

Last updated 2026-06-27 17:14:21.841267; freshness should be verified.

Geography

Australian continental Exclusive Economic Zone, including seabed surrounding Tasmania. Excludes areas around Macquarie Island, Norfolk Island, Christmas Island, Cocos (Keeling) Islands, Heard and McDonald Islands, and the Australian Antarctic Territory.