Predicted Seabed Gravel Content for Darwin Harbour Region at 10m Resolution

A 2011-2017 compilation of surveys funded by INPEX, Geoscience Australia, AIMS, and the Northern Territory Government. This dataset provides spatially continuous predictions of seabed gravel content for the Darwin and Bynoe Harbour region, presented as 10-meter resolution raster grids. Predictions are based on 395 samples and 14 environmental variables derived from multibeam sonar data.

Use Cases

• Modeling seabed habitat types based on predicted gravel content.
• Informing marine resource management decisions using baseline environmental data.
• Validating sediment prediction methods by comparing the reported VEcv accuracy of 59%.
• Identifying data gaps for future surveys where predictive variables were unavailable.

Strengths

• Predictive accuracy for gravel is reported as VEcv = 59%, with a 68.4% improvement over a commonly used method.
• Data is derived from a compilation of multiple surveys conducted between 2011 and 2017.
• Spatially continuous predictions are provided at a 10-meter resolution.

Limitations

• Absences in predictions occur due to non-availability of predictive variables.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network, aggregating data from Geoscience Australia, Australian Institute of Marine Science, and the Northern Territory Government.

Collection Method

Predictions based on 395 samples and 14 environmental variables from high-resolution multibeam sonar bathymetry and backscatter data.

Time Range

2011 to 2017

Freshness

Last updated 2026-06-27 19:07:32.324951; freshness should be verified.

Geography

Greater Darwin Harbour and Bynoe Harbour region, northern Australian marine margin.