GA302: Marine Seismic Survey Data from Capel and Faust Basins

Data from 50 sonobuoys recorded 800 km east of Australia in 2006, during the GA302 survey for Geoscience Australia's Big New Oil programme. The data were interpreted and forward modelled to estimate P-wave velocities in the upper sedimentary section and constrain sediment thickness. Gravity and magnetic anomaly data were also recorded, providing additional constraints for velocity models.

Use Cases

• Modeling sediment thickness based on P-wave velocity estimates derived from ray-tracing.
• Refining subsurface velocity models using integrated gravity and magnetic anomaly data.
• Correlating seismic reflection features with gravity models to identify deep sedimentary structures.

Strengths

• Data from 50 sonobuoys provides multiple measurement points.
• Velocity models include four distinct subsurface layers with defined speed ranges (e.g., 1.9, 2.3-3.0 km/s).
• Integration of seismic reflection, gravity, and magnetic data offers multi-physics constraints.

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 single 2006 survey; temporal coverage is limited.

Provenance

Source

Geoscience Australia Data

Collection Method

Recorded during the 2006 seismic survey GA302 using sonobuoys, with subsequent interpretation and forward modelling by ray-tracing.

Time Range

2006

Freshness

Last updated 2026-04-30 15:16:06.306913; freshness should be verified.

Geography

Capel and Faust Basins, 800 km east of Australia, in water depths of 1500-2000 m.