Crustal Transects of the Great Australian Bight: Seismic Survey for Ocean Drilling

4087 km of deep-seismic data were proposed for acquisition in the central Great Australian Bight. The survey, proposed by Geoscience Australia, aimed to support petroleum exploration, an Ocean Drilling Program proposal, and Australia's continental shelf claim under UNCLOS. The data was intended to define deep crustal structure and the continent-ocean boundary.

Use Cases

• Modeling tectonic evolution and detachment surfaces based on deep crustal structure data.
• Supporting proposals for scientific ocean drilling in the Great Australian Bight based on the provided framework data.
• Delimiting the legal continental shelf beyond the 200-nautical-mile EEZ based on structural interpretations.
• Investigating the nature of the Diamantina Zone crust based on seismic and magnetic data.

Strengths

• Proposed acquisition of 4087 km of deep-seismic data with a 16-second record length.
• Survey designed with three specific, high-level objectives supporting industry, science, and legal claims.
• Interpretation intended to be enhanced by legacy seismic refraction data from 1976.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description is a proposal; the actual existence and completeness of the collected dataset are not confirmed.

Provenance

Source

Geoscience Australia Data

Collection Method

Proposed acquisition via the AGS0 research vessel Rig Seismic.

Freshness

Last updated 2026-04-30 13:39:51.714342; freshness should be verified.

Geography

Central Great Australian Bight and continental margin south of Western Australia.