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%, presented in a 0.01 decimal degree resolution raster format. The dataset covers the Australian continental Exclusive Economic Zone, including the seabed surrounding Tasmania, and supersedes previous predictions with demonstrated improvements in accuracy. It was published by the Australian Ocean Data Network and last updated on 2026-04-28.

Use Cases

• Modeling seabed habitat suitability based on sediment gravel percentage.
• Regional environmental impact assessments based on continuous sediment fraction data.
• Updating marine geological maps based on improved predictions of gravel content.
• Planning offshore infrastructure projects based on seabed sediment properties.

Strengths

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

Limitations

• Accuracy varies based on underlying data density and seabed complexity; artefacts occur in regions with insufficient samples.
• May not be appropriate for local-scale use where sample density is insufficient 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 samples and spatial interpolation.

Time Range

2011

Freshness

Last updated 2026-04-28 15:40:04.490021; 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.