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%. The dataset covers the Australian continental EEZ at 0.01 decimal degree resolution and supersedes previous predictions with demonstrated improvements in accuracy. It was published by the Australian Ocean Data Network and last updated in 2026.

Use Cases

• Modeling seabed habitat suitability based on sediment gravel fractions.
• Regional planning for marine infrastructure based on seabed composition.
• Assessing sediment transport and erosion patterns across the continental shelf.
• Calibrating broader oceanographic models with updated seabed substrate data.

Strengths

• Dataset supersedes previous predictions with demonstrated improvements in accuracy.
• Provides continuous coverage of the Australian continental EEZ, including Tasmania.
• Data is presented in a raster format with a 0.01 decimal degree resolution.

Limitations

• Accuracy varies based on underlying data density and seabed complexity; artefacts occur in regions with insufficient samples.
• Dataset may not be appropriate for local-scale analysis where sample density is low.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely contains predictions and interpolations from seabed sediment samples.

Time Range

2011

Freshness

Last updated 2026-06-05 07:59:54.466364; freshness should be verified.

Geography

Australian continental Exclusive Economic Zone (EEZ), 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.