East Antarctic Seabed Glacial Features from RV Polarstern Expedition

RV Polarstern expedition PS141 (EASI-3) collected over 10,000 nautical miles of hydroacoustic data from the East Antarctic continental shelf in 2024. The dataset presents preliminary bathymetric and geomorphic mapping results revealing submerged glacial features. The work was prepared by the Australian Ocean Data Network for a 2024 research conference.

Use Cases

• Classify seabed feature types like iceberg scours and mega-scale glacial lineations from bathymetric profiles.
• Correlate subglacial basin locations with past grounding zone wedge positions to reconstruct ice sheet retreat.
• Map the spatial distribution of geomorphic features between 85° E and 115° E to identify patterns in glacial flow.
• Integrate multibeam and sub-bottom profile data to analyze the stratigraphy of glacial deposits on the continental shelf.

Strengths

• Over 10,000 nautical miles of continuous hydroacoustic survey data.
• Covers a targeted area of the Davis and Mawson Seas off the East Antarctic ice margin.
• Data was collected during a dedicated 2024 research expedition (PS141).

Limitations

• Dataset is described as preliminary results, indicating analysis is not complete.
• Specific row counts, column details, and data formats beyond PDF are not provided.
• Geographic coverage is limited to a specific corridor between 85° E and 115° E.

Provenance

Source

Australian Ocean Data Network, from RV Polarstern expedition PS141 (EASI-3).

Collection Method

Hydroacoustic data collection via continuous multibeam and sub-bottom profiling.

Time Range

Primary data collection occurred from 6 February to 14 April 2024.

Freshness

Data was collected in February-April 2024 and last updated in the system in April 2026.

Geography

East Antarctic continental shelf in the Davis and Mawson Seas, between 85° E and 115° E longitude.