AGSO Survey 137: Deep Crustal Seismic Data from the Otway Basin, 1994-1995

Approximately 4000 km of deep crustal seismic data were acquired across the offshore Otway Basin from early December 1994 to late January 1995. The survey, AGSO Survey 137, was conducted by Geoscience Australia to determine the basin's deep crustal architecture and characterize extensional processes. Data were recorded with a 16-second record length and a 2-millisecond sample interval using a tuned airgun source and differential GPS navigation.

Use Cases

• Model deep crustal architecture based on seismic reflection data down to 8-12 seconds.
• Analyze linkages between sedimentary basins based on survey goals to connect the Otway, Bass Basin, and Kanmantoo High.
• Integrate seismic and aeromagnetic data for enhanced basin understanding as described in the survey objectives.
• Test concepts from aeromagnetic data interpretation using the designed seismic lines.

Strengths

• Approximately 4000 km of seismic lines provide substantial spatial coverage.
• Survey parameters, including a 4800 m streamer and 48-fold CDP coverage, were designed for high-quality deep data.
• Integration with aeromagnetic datasets is a stated goal, suggesting potential for multi-modal analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is from a specific campaign in late 1994/early 1995, which may limit temporal relevance for modern studies.
• Row count and sample data are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Marine seismic survey using a 4800 m streamer and tuned airgun arrays, with navigation by differential GPS.

Time Range

Early December 1994 to late January 1995

Freshness

Last updated 2026-05-14 09:27:33.539152; freshness should be verified.

Geography

Offshore Otway Basin, south-eastern Australia