AUV Sidescan Sonar Data from the 2014 Caswell Sub-basin Marine Survey

Geoscience Australia collected 71 line kilometers of high and low frequency sidescan sonar data using an Autonomous Underwater Vehicle (AUV) during a 2014 marine survey. The survey aimed to assess the CO2 storage potential of the Browse Basin by identifying indicators of fluid seepage that could compromise geological seal integrity. Data was gathered aboard the RV Tangaroa in water depths ranging from 90 to 430 meters.

Use Cases

• Training object detection models to identify natural seepage features based on sidescan sonar imagery.
• Analyzing seabed texture and morphology for geological characterization based on sonar backscatter data.
• Correlating high-resolution AUV sonar data with broader multibeam bathymetry to map seal integrity indicators.
• Studying the relationship between seabed features and shallow sub-bottom geology for carbon storage site assessment.

Strengths

• Data includes 71 line kilometers of sidescan sonar coverage.
• Survey collected complementary data types including underwater video, seabed samples, and sub-bottom profiles.
• Specific technical parameters for the sonar systems (e.g., 120/410 kHz frequencies, 5 Hz trigger) are documented.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total file size are unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to the single 2014 survey.

Provenance

Source

Geoscience Australia Data

Collection Method

Collected via an Edgetech FS sidescan sonar system mounted on an Autonomous Underwater Vehicle (AUV) during survey GA0346.

Time Range

9 October to 9 November 2014

Freshness

Last updated 2026-04-30 15:27:12.985814; freshness should be verified.

Geography

Caswell Sub-basin, north-eastern Browse Basin