Geoscience Australia Marine Data: Bathymetry and Sonar Surveys

Geoscience Australia's marine geospatial web service contains bathymetry and backscatter gridded data plus derived layers. It includes 150 m and optimal resolution bathymetry, 5 m sidescan sonar (SSS) and synthetic aperture sonar (SAS) data collected during the search for Malaysian Airlines Flight MH370 in the Indian Ocean. The service allows exploration of seafloor topography through compiled multibeam sonar and other marine datasets.

Use Cases

• Model seafloor topography based on compiled multibeam sonar and bathymetry data.
• Analyze marine sediment distribution based on the included sediment data layers.
• Plan bathymetry survey missions based on the included coverage information and priority planning areas.
• Study backscatter characteristics of the seafloor based on the gridded backscatter data.

Strengths

• Includes high-resolution data such as 5 m sidescan sonar and synthetic aperture sonar.
• Contains data from a specific, documented international search operation (MH370).
• Provides multiple derived products and layers beyond raw sonar data.

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

Collected via multibeam sonar and other marine surveys, including phases from the MH370 search.

Freshness

Last updated 2026-06-17 02:15:50.946962; freshness should be verified.

Geography

Indian Ocean, specifically areas related to the MH370 search operations.