Seabed glacial geomorphology features on the East Antarctic continental shelf: first resul

East Antarctic continental shelf data from the RV Polarstern expedition PS141 (EASI-3) in 2024. The dataset contains preliminary bathymetric and geomorphic mapping results from over 10,000 nautical miles of hydroacoustic data collected in the Davis and Mawson Seas. It reveals submerged glacial features like iceberg scours and grounding zone wedges, prepared for the Australian Antarctic Research Conference in November 2024.

Use Cases

• Mapping past ice sheet extent based on identified mega-scale glacial lineations.
• Analyzing seabed topography's role in ocean circulation based on described subglacial basins.
• Informing models of future sea-level change based on records of past glacier fluctuations.
• Classifying submerged glacial landforms based on features like iceberg scours and grounding zone wedges.

Strengths

• Contains over 10,000 nautical miles of newly collected hydroacoustic data.
• Reveals a variety of specific glacial features including iceberg scours and mega-scale glacial lineations.
• Covers a targeted area between 85° E and 115° E off the East Antarctic margin.

Limitations

• Data is presented in a preliminary state as PDF files; raw structured data formats are not specified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset scale are unknown, which may limit suitability assessment.

Provenance

Source

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

Collection Method

Collected via continuous multibeam and sub-bottom profile hydroacoustic surveys.

Time Range

Expedition dates: 6 February to 14 April 2024.

Freshness

Last updated 2026-06-16 19:14:34.108768; freshness should be verified.

Geography

Davis and Mawson Seas, East Antarctic continental shelf between Wilhelm II to Wilkes Land (85° E to 115° E).