Antarctic Continental Margin Bathymetric And Geophysical Profiles

Marine geophysical surveys conducted in 2001/2 and 2002/3 acquired seismic reflection, sonobuoy refraction, magnetic, and gravity profiles to define Australia's extended continental shelf. The project was managed by the Australian Department of Finance and Administration, with technical work by Geoscience Australia. Data underpinned a formal submission to the United Nations in 2004.

Use Cases

• Model seafloor depth and structure using bathymetric and seismic reflection profiles.
• Analyze crustal properties and sediment layers with sonobuoy seismic refraction data.
• Map magnetic anomalies and gravity variations across the continental margin.
• Support legal submissions for maritime jurisdiction under UNCLOS Article 76 with interpreted geophysical data.

Strengths

• Data includes multiple geophysical modalities: seismic, magnetic, and gravity profiles.
• Surveys conducted over two dedicated Antarctic summer seasons (2001/2 and 2002/3).

Limitations

• Specific row counts, file formats, and column details are unknown.
• Core data collection occurred over 20 years ago, limiting temporal recency.
• Geographic scope is limited to the Australian Antarctic Territory margin.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC), originating from ASAC Project 933.

Collection Method

Acquired via marine surveys using vessels Geoarctic and Polar Duke, supervised by Geoscience Australia.

Time Range

Survey data collected during 2001-2003 Antarctic seasons.

Freshness

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Geography

Continental margin of the Australian Antarctic Territory (AAT).