Predicted Seabed Mud Content for Darwin and Bynoe Harbour

Darwin and Bynoe Harbour regions in northern Australia are covered by a 10-meter resolution raster grid predicting seabed mud content. The predictions are based on 395 physical samples and nine environmental variables derived from high-resolution multibeam sonar data, achieving a reported VEcv accuracy of 62% for mud. This dataset supersedes previous predictions and was created to underpin marine resource management decisions.

Use Cases

• Creating thematic habitat maps for marine resource management based on predicted sediment composition.
• Modeling seabed characteristics for environmental impact assessments using the 10-meter resolution grid.
• Benchmarking predictive modeling techniques against the reported 198.3% accuracy improvement over IDW.
• Analyzing spatial patterns of fine sediment (mud < 63 µm) distribution in harbour environments.

Strengths

• Predictions are based on a substantial ground-truth set of 395 physical samples.
• Model accuracy is quantified with a VEcv of 62% for mud and a reported 198.3% improvement over common interpolation methods.
• Data synthesizes multiple systematic surveys conducted between 2011 and 2017 by major Australian research institutions.

Limitations

• Metadata for row count, file size, license, and specific column names is unavailable across all sources.
• Absences in predictions occur due to non-availability of associated predictive variables in some areas.
• The 'last updated' date shows a minor conflict between 2026-04-04 and 2026-06 04 across entries.

Provenance

Source

Geoscience Australia (GA), Australian Institute of Marine Science (AIMS), and the Northern Territory Government's Department of Environment and Natural Resources (NTG-DENR).

Collection Method

Compilation and predictive modeling of multiple seabed surveys (GA0333, GA0341, GA0351, GA4452, GA0356, GA0358, GA0359) between 2011 and 2017, using nine environmental variables from multibeam sonar.

Time Range

2011 to 2017

Freshness

2026-06-04

Geography

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