Otway Basin Deep Crustal Seismic Survey Data, 1994-1995

The Otway Basin offshore southeastern Australia was surveyed for deep crustal architecture from December 1994 to January 1995. The AGSO Survey 137 project acquired approximately 4000 km of seismic data using a 4800 m streamer and tuned airgun arrays. This data aims to characterize the basin's extensional processes and integrate with aeromagnetic datasets.

Use Cases

• Model deep crustal architecture based on seismic reflectors 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 proposal.
• Test concepts from aeromagnetic data interpretation using the acquired deep crustal seismic lines.

Strengths

• Approximately 4000 km of deep crustal seismic data provides substantial spatial coverage.
• Survey used specific, high-quality parameters: a 4800 m streamer, 49 litre airgun arrays, and differential GPS navigation.
• Data collection was designed for 48-fold CDP coverage and a 16-second record length to capture deep reflectors.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a specific campaign in 1994-1995; temporal coverage is limited.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via marine seismic survey (AGSO Survey 137) using a tuned airgun source and streamer.

Time Range

Late December 1994 to late January 1995

Freshness

Last updated 2026-03-25 15:26:05.436252; freshness should be verified.

Geography

Offshore Otway Basin, southeastern Australia