Seabed Environments and Benthic Biodiversity of Van Diemen Rise

A seabed mapping survey collected 1,154 square kilometres of multibeam sonar data and 340 line-km of sub-bottom profiles across four study areas in the eastern Joseph Bonaparte Gulf. Geological, geochemical, geophysical, and biological data were gathered from 63 stations to study late-Quaternary evolution and environment-biota relationships. The survey was conducted by Geoscience Australia and the Australian Institute of Marine Science, with data published via the Australian Ocean Data Network.

Use Cases

• Analyze multibeam sonar and sub-bottom profile data to model seabed geomorphology across 1,154 square kilometres.
• Correlate sedimentological and geochemical station data with macro-benthic community structure for biodiversity surrogacy research.
• Use oceanographic data from four stations to understand wave, tide, and current patterns influencing sediment transport on the Van Diemen Rise.
• Investigate relationships between physical environment features and infaunal diversity across outer to inner shelf gradients.
• Place benthic biodiversity data into a biogeographic context for the Arafura-Timor Sea region.

Strengths

• Multibeam sonar provides 100 percent seabed coverage for each of the four study areas.
• Integrates geological, biological, and oceanographic data from 63 sampling stations.
• Covers 1,154 square kilometres with multibeam data and 340 line-km of sub-bottom profiles.

Limitations

• Sample size is limited to 63 stations across a large survey area.
• Primary data formats are PDF and HTML, which may require extraction for quantitative analysis.
• Temporal coverage for the collected data is not specified beyond the survey period.

Provenance

Source

Australian Ocean Data Network, from a survey by Geoscience Australia and the Australian Institute of Marine Science.

Collection Method

Marine survey using multibeam sonar, sub-bottom profiling, and station sampling for geological, geochemical, and biological data.

Time Range

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Freshness

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Geography

Eastern Joseph Bonaparte Gulf, Van Diemen Rise, northern Australia.