Predicted Seabed Sediment Content in the Timor Sea, 10 m Resolution

The Timor Sea region within the Australian continental Exclusive Economic Zone (EEZ) is covered by this dataset. It provides spatially continuous predictions of seabed gravel, mud, and sand content as weight percentages, delivered as 10-meter resolution raster grids and ASCII text files. This research, supported by the National Environmental Science Program (NESP) Marine Biodiversity Hub, supersedes previous predictions with demonstrated improvements in accuracy.

Use Cases

• Modeling seabed habitat suitability based on predicted sediment fractions.
• Analyzing sediment distribution patterns for geological studies.
• Validating or improving marine ecosystem models using seabed composition data.
• Assessing the impact of sediment type on benthic communities.

Strengths

• Predictions supersede previous versions with improved accuracy.
• Provides three sediment fractions (gravel, mud, sand) at a 10-meter spatial resolution.
• Accuracy metrics are provided: VEcv = 71% for mud, 72% for sand, and 42% for gravel.

Limitations

• Accuracy varies by sediment type, with gravel predictions having lower accuracy (VEcv=42%).
• Dataset contains artefacts, such as horizontal and vertical lines, due to noise in predictive variables like backscatter data.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Spatial predictions derived from predictive variables, including backscatter data.

Time Range

2018

Freshness

Last updated 2026-03-25 18:38:12.888784; freshness should be verified.

Geography

Timor Sea region within the Australian continental Exclusive Economic Zone (EEZ).