Seabed Sediment Composition in Australia's Petrel Sub-Basin, 2012

2012 predictions of seabed gravel, mud, and sand content expressed as weight percentages for the Petrel sub-basin within the Australian continental Exclusive Economic Zone. The dataset is provided as spatially continuous 0.0025 decimal degree resolution raster grids and ASCII text files by Geoscience Australia. This dataset supersedes previous predictions with demonstrated improvements in accuracy, though accuracy varies based on underlying sample density and seabed complexity.

Use Cases

• Modeling seabed habitat suitability based on sediment grain size fractions.
• Assessing geological resource potential based on spatially continuous sediment composition.
• Validating or updating regional marine geological maps based on improved prediction accuracy.
• Planning marine survey campaigns by identifying areas with insufficient sample density.

Strengths

• Provides spatially continuous predictions at 0.0025 decimal degree resolution.
• Supersedes previous predictions with demonstrated improvements in accuracy.
• Covers three key sediment fractions (gravel, mud, sand) as weight percentages from 0 to 100%.

Limitations

• Artefacts occur due to insufficient samples in relevant regions.
• Intended for basin-scale use and may not be appropriate for smaller-scale analysis in undersampled areas.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Predicted sediment fractions presented as raster grids and ASCII text, superseding previous models.

Time Range

2012

Freshness

Last updated 2026-03 15:42:39.406877; freshness should be verified.

Geography

Petrel sub-basin in the Australian continental Exclusive Economic Zone.