GA355: AUV Seafloor Imagery for Seismic Impact Monitoring in Gippsland Basin

Autonomous Underwater Vehicle (AUV) imagery of the seafloor collected before and after a seismic survey to assess potential impacts on scallops. The data was collected by the AUVs Phoenix and Sirius during survey GA-355 from 18-22 February 2016 in the Gippsland Basin, with additional sites near Devonport, Tasmania. Post-processed data includes color-corrected geotiffs, mosaics, and 3D mesh reconstructions of the seafloor.

Use Cases

• Assessing changes in scallop populations based on before-and-after seafloor imagery.
• Creating 3D seafloor reconstructions for habitat mapping based on the provided mesh data.
• Analyzing the accuracy of AUV navigation and georeferencing under strong current conditions mentioned in the description.
• Comparing seafloor health at known scallop beds in Devonport, Tasmania, to the main study area.

Strengths

• Includes imagery from two AUV systems (Phoenix and Sirius) for redundancy and concurrent data collection.
• Data underwent post-processing including color-balancing and SLAM processing to improve georeferencing accuracy.
• Provides multiple data products: individual geotiffs, mosaics, and 3D mesh reconstructions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description notes strong currents caused deviations from planned AUV paths, which may affect data consistency.

Provenance

Source

Australian Ocean Data Network, collected as part of the Gippsland Marine Environmental Monitoring (GMEM) project.

Collection Method

Imagery collected by Autonomous Underwater Vehicles (AUVs) Phoenix and Sirius.

Time Range

Survey conducted 18-22 February 2016.

Freshness

Last updated 2026-06-05 07:45:59.767188; freshness should be verified.

Geography

Gippsland Basin, Australia, with additional sites near Devonport, Tasmania.