Darwin Harbour Predicted Seabed Sand Content at 10-Meter Resolution

395 samples and seven environmental variables were used to create a predicted seabed sand content grid for the Darwin and Bynoe Harbour regions. The dataset provides spatially continuous predictions of seabed %sand (63-2000 µm) content in 10 m resolution raster grids. It was compiled from multiple surveys conducted by Geoscience Australia, AIMS, and the Northern Territory Government between 2011 and 2017.

Use Cases

• Modeling seabed habitat types based on predicted sand content.
• Informing marine resource management decisions with baseline environmental data.
• Validating and improving predictive accuracy of seabed composition mapping methods.
• Creating thematic habitat maps for the Darwin Harbour region.

Strengths

• Predictive accuracy is reported as high, with a VEcv of 39% for sand.
• Predictive accuracy was increased by 84.8% for sand compared to a commonly used method (IDW).
• Data is presented at a high 10-meter spatial resolution.
• Compilation is based on 395 samples and seven environmental variables from high-resolution multibeam sonar.

Limitations

• Absences in predictions occur due to non-availability of associated 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 (GA), the Australian Institute of Marine Science (AIMS), and the Northern Territory Government's Department of Environment and Natural Resources (NTG-DENR).

Collection Method

Derived from a compilation of multiple seabed surveys undertaken between 2011 and 2017.

Time Range

Survey data collected between 2011 and 2017.

Freshness

Last updated 2026-06-23 00:10:51.271974; freshness should be verified.

Geography

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