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

AGSO Survey 137 is a deep crustal seismic data acquisition project covering up to approximately 4000 km in the offshore Otway Basin, South-eastern Australia. The survey was conducted from early December 1994 to late January 1995 with the goal of determining the basin's deep crustal architecture and extensional processes. The Australian Ocean Data Network hosts the proposal documentation for this survey.

Use Cases

• Modeling deep crustal architecture based on the described 48-fold CDP coverage and 16-second record length.
• Analyzing extensional tectonic processes based on the survey's goal to characterize the Southern Rift System.
• Integrating seismic and aeromagnetic datasets to test concepts for basin interpretation as mentioned in the description.
• Constraining crustal velocities using the seismic refraction data recorded on key lines.

Strengths

• Survey parameters are explicitly detailed, including a 4800 m streamer, 49-litre airgun source, and differential GPS navigation.
• The methodology was previously used successfully on the North West Shelf and in the Gippsland Basin, obtaining interpretable reflectors down to 8-12 seconds.
• Clear scientific objectives are stated for determining crustal architecture and characterizing large-scale extensional processes.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and specific data file availability are unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Proposed acquisition of deep crustal seismic data using tuned airgun arrays and a long streamer.

Time Range

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

Freshness

Last updated 2026-04-16 16:36:08.639413; freshness should be verified.

Geography

Offshore Otway Basin, South-eastern Australia.