Seabed Gravel Content Across the Australian Continental EEZ, 2011

Spatially continuous data of seabed gravel content expressed as a weight percentage from 0 to 100% in 0.01 decimal degree resolution raster format. The dataset covers the Australian continental Exclusive Economic Zone, including waters surrounding Tasmania, and supersedes previous predictions with improved accuracy. It is provided by the Australian Ocean Data Network and was last updated in June 2026.

Use Cases

• Map sediment distribution patterns based on gravel content percentage.
• Model seabed habitats and ecosystems based on substrate type.
• Inform marine spatial planning and resource management based on seabed characteristics.
• Assess the accuracy of regional sediment predictions based on the described superseding of previous datasets.

Strengths

• Provides a continuous raster surface at 0.01 decimal degree resolution.
• Supersedes previous predictions with demonstrated improvements in accuracy.
• Covers the Australian continental EEZ, including Tasmania.

Limitations

• Accuracy varies based on underlying data density and seabed complexity, with artefacts present where samples are insufficient.
• Not recommended for local-scale use in areas with insufficient sample density to detect local variation.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely derived from seabed sampling and spatial interpolation.

Time Range

Snapshot from 2011.

Freshness

Last updated 2026-06-16 20:21:12.238945; freshness should be verified.

Geography

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