East Antarctic Davis and Mawson Sea Glaciomorphological Features from Polarstern PS141

The Davis and Mawson Sea continental shelves between 85°E and 115°E were surveyed during the RV Polarstern Expedition PS141 from February to April 2024. The expedition collected over 7500 nautical miles of hydroacoustic data, revealing glacial landscapes including iceberg scours and grounding zone wedges. This dataset presents preliminary results from the EASI-3 project, hosted by the Australian Ocean Data Network.

Use Cases

• Reconstruct past ice sheet extent and retreat patterns based on mapped mega-scale glacial lineations.
• Model subglacial hydrological systems based on identified subglacial lake features.
• Analyze sediment transport processes based on features observed from the continental slope to the shelf.
• Correlate glacial landforms with climate fluctuations to understand East Antarctic Ice Sheet sensitivity.

Strengths

• Covers a largely unexplored area of the East Antarctic continental shelf.
• Includes over 7500 nautical miles of continuous multibeam bathymetry and sediment echography data.
• Reveals a variety of specific glacial features such as iceberg scours and grounding zone wedges.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data is presented as preliminary results from a single expedition.

Provenance

Source

Australian Ocean Data Network

Collection Method

Hydroacoustic surveys (multibeam bathymetry and sediment echography) collected during RV Polarstern Expedition PS141.

Time Range

Expedition conducted 06.02 – 14.04.2024.

Freshness

Last updated 2026-05-04 23:25:05.360938; freshness should be verified

Geography

Davis and Mawson Sea continental shelves, East Antarctica, between 85°E and 115°E.