AUV Sidescan Sonar Data from the Browse Basin Marine Survey (2014)

Geoscience Australia conducted a marine survey of the Caswell Sub-basin in the north-eastern Browse Basin between 9 October and 9 November 2014. The survey aimed to assess CO2 storage potential by acquiring seabed data, including this high and low frequency sidescan sonar data collected by an Autonomous Underwater Vehicle (AUV). The AUV collected 71 line km of side scan sonar data using an Edgetech FS system.

Use Cases

• Identify seabed features indicative of fluid seepage based on high-resolution sidescan sonar imagery.
• Analyze geological structures for CO2 storage seal integrity assessment based on survey objectives.
• Map seabed morphology and texture using dual-frequency (120 kHz and 410 kHz) sonar data.
• Correlate sonar data with other survey data (multibeam, sub-bottom profiles, video) for integrated geological interpretation.

Strengths

• Data collected during a dedicated, multi-leg marine survey aboard a research vessel (RV Tangaroa).
• Sidescan sonar data includes both high (390-430 kHz) and low (98-111 kHz) frequency channels.
• AUV-collected data provides higher resolution than broader shipboard survey data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and exact file size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia, conducted with NIWA and Fugro Survey Pty Ltd.

Collection Method

Collected by an Autonomous Underwater Vehicle (AUV) equipped with an Edgetech FS sidescan sonar system.

Time Range

9 October to 9 November 2014

Freshness

Last updated 2026-04 10 17:48:01.900336; freshness should be verified.

Geography

Caswell Sub-basin, north-eastern Browse Basin, Australia