Otway Basin Deep Crustal Seismic Survey Proposal and Parameters

Approximately 4000 km of deep crustal seismic data was proposed for acquisition across the offshore Otway Basin. The Australian Ocean Data Network published this cruise proposal for AGSO Survey 137, planned for the period from early December 1994 to late January 1995. It details technical parameters and scientific goals for characterizing the basin's architecture.

Use Cases

• Analyze deep crustal architecture using seismic reflection data recorded with a 16-second record length and 2-millisecond sample interval.
• Integrate seismic refraction data from key lines with aeromagnetic datasets to constrain crustal velocities and enhance basin understanding.
• Study extensional processes and basin linkages by interpreting data from a 4800 m streamer configured with 192 active groups.
• Assess the effectiveness of tuned airgun arrays with 49 litres capacity, fired every 50 metres for 48-fold CDP coverage, in obtaining deep seismic data.

Strengths

• Proposed acquisition of approximately 4000 km of seismic data provides substantial spatial coverage.
• Detailed technical parameters are specified, including a 4800 m streamer, 192 active groups, and a 16-second record length.

Limitations

• Dataset consists of a proposal document; the actual acquired seismic data files are not included.
• Temporal coverage is limited to a specific historical period (late 1994/early 1995).
• Sample data and row/column counts for the seismic traces are unavailable.

Provenance

Source

Australian Ocean Data Network

Collection Method

Marine seismic survey proposal detailing planned acquisition using differential GPS navigation and tuned airgun arrays.

Time Range

Survey planned for early December 1994 to late January 1995.

Freshness

null

Geography

Offshore Otway Basin, south-eastern Australia.