Marine Seismic Survey Data for Capel and Faust Basins

50 sonobuoys recorded seismic, gravity, and magnetic data over the Capel and Faust Basins, 800 km east of Australia, during the 2006/07 GA302 survey. Geoscience Australia interpreted the data to estimate P-wave velocities and sediment thickness in the upper sedimentary section. Preliminary analysis identified four distinct seismic reflection patterns and velocity layers ranging from 1.9 to 5.3 km/s.

Use Cases

• Estimate sediment thickness using P-wave velocity models derived from ray-tracing of sonobuoy data.
• Model subsurface density structures by integrating gravity anomaly data with seismic reflection profiles.
• Classify seismic stratigraphy by analyzing the four identified reflection pattern sequences (I-IV).
• Constrain velocity-depth profiles for the upper sedimentary section using the reported layer velocity ranges (1.9, 2.3-3.0, 3.6-4.7, 5-5.3 km/s).
• Correlate magnetic anomaly data with seismic features to refine geological interpretations of the basin.

Strengths

• Data from 50 sonobuoys provides multiple measurement points across the survey area.
• Integrates three complementary geophysical data types: seismic, gravity, and magnetic.
• P-wave velocity estimates are provided for four distinct model layers below the water column.
• Survey covers a specific offshore region (Capel and Faust Basins) with reported water depths of 1500-2000 m.

Limitations

• Dataset represents preliminary results from a 2006/07 survey, potentially lacking final processed versions.
• Specific row counts, column definitions, and data formats are not provided in the description.
• Spatial coverage is limited to two specific basins, reducing generalizability to other regions.

Provenance

Source

Geoscience Australia's New Oil initiative, via the Australian Ocean Data Network.

Collection Method

Marine seismic survey GA302 using sonobuoys, with data interpretation and forward modeling by ray-tracing.

Time Range

2006-2007

Freshness

Data was collected in 2006/07; metadata was last updated in 2026.

Geography

Capel and Faust Basins, located approximately 800 km east of Australia.