A high-resolution multibeam echosounder dataset covering over 279,000 km² in the southeastern Indian Ocean, acquired to assist the search for Malaysia Airlines Flight MH370. The data provides the first large-scale coverage in this region and was analyzed by researchers to compare with global satellite-derived models. It reveals detailed geomorphic features and insights into geological processes.
Use Cases
- Compare satellite-derived bathymetry models with direct sonar measurements based on the reported 62% agreement rate and >38% disagreement.
- Analyze the distribution and characteristics of seamounts, hills, and mountains based on the reported 20% increase in extent and fourfold increase in seamount count.
- Study modern sedimentary processes like mass transport and gas/fluid discharge based on identified sediment features and pockmarks.
- Investigate seafloor spreading and rifting processes based on mapped ridges, rift blocks, and bedrock outcrops.
- Assess the ecological significance of high-relief seabed structures based on the mapping of seamounts and other discrete features.
Strengths
- High-resolution coverage over 279,000 km², providing unprecedented detail for the region.
- Direct comparison with satellite models shows specific accuracy metrics (62% within ±100 m).
- Identifies a wide range of discrete geomorphic features, doubling the number previously mapped.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Freshness should be verified; last metadata update was 2026-04-16.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Acquired via multibeam echosounder (MBES) surveys.
- Geography
- Southeast Indian Ocean, area covering over 279,000 km².