A high-resolution multibeam echosounder dataset covering over 279,000 km² was acquired in the southeastern Indian Ocean to assist the search for Malaysia Airlines Flight MH370. The data, provided by the Australian Ocean Data Network, offers the first large-scale coverage of MBES data in this remote region and was used for geomorphic analyses. It reveals significant discrepancies with global satellite-derived models and details previously unmapped seafloor features.
Use Cases
- Comparing high-resolution bathymetric measurements with satellite-derived models based on the reported >38% disagreement in depth estimates.
- Mapping and analyzing seafloor geomorphic features such as seamounts, ridges, and pockmarks based on the detailed feature identification described.
- Studying modern sedimentary processes like sediment mass transport and gas/fluid discharge based on the documented features along margins and trenches.
- Investigating seafloor spreading and rifting processes based on the analysis of preserved spreading fabric and rift blocks mentioned.
Strengths
- Covers a large area of over 279,000 square kilometers.
- Provides high-resolution data revealing four times more seamounts and a 20% increase in hills/mountains compared to a coarser global map.
- Enables identification of fine-scale features like pockmarks and doubles the number of discrete seafloor features mapped.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Acquired via high-resolution multibeam echosounder (MBES) survey.
- Time Range
- Data acquisition was prompted by the search for MH370, which disappeared on 8 March 2014.
- Freshness
- Last updated 2026-06-23 04:19:13.498462; freshness should be verified.
- Geography
- Southeastern Indian Ocean, specifically the MH370 search area encompassing abyssal plains, the Southeast Indian Ridge, Broken Ridge, and the Diamantina Escarpment.