East Antarctic Continental Shelf Glaciomorphological Features from Expedition PS141

The RV Polarstern Expedition PS141 collected hydroacoustic data on the Davis and Mawson Sea continental shelves between 85°E and 115°E from February to April 2024. The expedition gathered over 7500 nautical miles of multibeam bathymetry and sediment echography data, revealing glacial landscapes like iceberg scours and grounding zone wedges. These preliminary results were presented by the Australian Ocean Data Network at a 2024 international conference.

Use Cases

• Reconstructing past ice sheet dynamics based on mapped mega-scale glacial lineations.
• Analyzing sediment transport pathways based on features identified from hydroacoustic surveys.
• Modeling interactions between ocean circulation and ice sheet stability based on grounding zone wedge data.
• Comparing glacial landscapes of the East Antarctic margin with other regions based on identified features like iceberg scours and subglacial lakes.

Strengths

• Data covers a largely unexplored area of the East Antarctic continental shelf.
• Includes over 7500 nautical miles of continuous hydroacoustic survey data.
• Identifies specific glacial features such as iceberg scours, mega-scale glacial lineations, 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.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

06.02 – 14.04.2024

Freshness

Last updated 2026-04-16 14:41:50.087769; freshness should be verified.

Geography

Davis and Mawson Sea continental shelves between 85°E and 115°E, off Wilhelm II to Wilkes Land, East Antarctica.