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

The Otway Basin offshore southeastern Australia was surveyed for deep crustal seismic data between December 1994 and January 1995. The project, AGSO Survey 137, aimed to determine the basin's deep crustal architecture and characterize extensional processes. Data was acquired using a 4800 m streamer and tuned airgun arrays, with refraction data recorded to constrain crustal velocities.

Use Cases

• Modeling deep crustal architecture based on seismic reflectors down to 8-12 seconds.
• Characterizing extensional processes in the Southern Rift System based on the survey's principal goals.
• Integrating seismic and aeromagnetic datasets to enhance basin architecture understanding as described.
• Testing concepts from aeromagnetic data interpretation using the newly acquired seismic lines.

Strengths

• Survey acquired approximately 4000 km of deep crustal seismic data.
• Used specific acquisition parameters (4800 m streamer, 49L airgun array, 48-fold CDP coverage) known to produce high-quality data.
• Designed to integrate with recently acquired aeromagnetic data for enhanced interpretation.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified; the last metadata update is dated 2026-04-30.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Late 1994 to early 1995 (December 1994 to January 1995).

Freshness

Last updated 2026-04-30 13:02:09.890693; freshness should be verified

Geography

Offshore Otway Basin, southeastern Australia.