Geoscience Australia Marine Data: Bathymetry and Sonar Surveys

Geoscience Australia's marine geospatial data web service includes bathymetry, backscatter, and marine sediment layers. It also contains specific 150 m and optimal resolution bathymetry, 5 m sidescan sonar, and synthetic aperture sonar data collected during phases 1 and 2 of the MH370 search in the Indian Ocean. The service allows exploration of seafloor topography compiled from multibeam sonar and other marine datasets.

Use Cases

• Seafloor topography mapping based on compiled bathymetry and multibeam sonar data.
• Analysis of marine sediment distribution based on the described sediment data layers.
• Planning underwater search operations based on the high-resolution sonar data collected for the MH370 search.
• Studying backscatter properties of the seabed based on the included backscatter gridded data.

Strengths

• Includes specific high-resolution data (5 m sidescan sonar, synthetic aperture sonar) from a major international search operation.
• Contains a variety of derived marine geospatial products such as bathymetry coverage information and planning areas.
• Last updated on 2026-04-16, suggesting ongoing maintenance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific survey areas described.

Provenance

Source

Geoscience Australia, via the Australian Ocean Data Network.

Collection Method

Compilation of multibeam sonar and other marine datasets acquired, including data from government-led surveys.

Freshness

Last updated 2026-04-16 14:01:59.596638

Geography

Indian Ocean, specifically areas surveyed for the MH370 search.