Timor Sea Seabed Sediment Composition in 10-Meter Resolution

The Timor Sea region within Australia's Exclusive Economic Zone contains spatially continuous predictions of seabed gravel, mud, and sand content. The dataset is presented as 10-meter resolution raster grids and ASCII text files, with predictions superseding previous versions. This research was supported by the National Environmental Science Program Marine Biodiversity Hub.

Use Cases

• Model seabed habitat suitability based on sediment composition fractions.
• Analyze sediment distribution patterns based on 10-meter resolution raster grids.
• Validate and update seabed maps using the superseded predictions with improved accuracy.
• Study the relationship between predictive variables and sediment types based on the described backscatter data artifacts.

Strengths

• Predictions supersede previous versions with demonstrated improvements in accuracy.
• Accuracy metrics are provided: VEcv = 71% for mud, VEcv = 72% for sand, and VEcv = 42% for gravel.
• Data is spatially continuous and presented in 10-meter resolution raster grids.

Limitations

• Accuracy varies significantly by sediment type, with gravel predictions having a lower VEcv of 42%.
• The dataset contains artifacts, such as horizontal and vertical lines, resulting from noise in predictive variables like backscatter data.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Predicted from predictive variables, including backscatter data.

Freshness

Last updated 2026-04-16 16:08:19.675993; freshness should be verified.

Geography

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