Glaciomorphological Features from East Antarctic Davis and Mawson Sea Shelves, 2024

Preliminary results from the RV Polarstern Expedition PS141, conducted from 06.02 to 14.04.2024. The dataset presents hydroacoustic survey data revealing glacial landscapes from the largely unexplored continental shelves between 85°E and 115°E. It was collected by the Australian Ocean Data Network as part of the EASI-3 project investigating ice sheet-ocean interactions.

Use Cases

• Reconstruct past ice sheet dynamics based on mapped features like mega-scale glacial lineations and grounding zone wedges.
• Model sediment transport processes based on features observed from the upper continental slope to the shelf.
• Analyze the vulnerability of the Aurora subglacial basin based on the interplay of glacial features and oceanic processes.
• Compare glacial landscapes between East and West Antarctic ice sheets based on the described geomorphological features.

Strengths

• Covers a largely unexplored area of the East Antarctic margin between 85°E and 115°E.
• Includes more than 7500 nautical miles of continuous multibeam bathymetry and sediment echography data.
• Reveals a variety of specific glacial features including iceberg scours, subglacial lakes, 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 in a PDF format, which may limit direct machine-readability and analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

Survey conducted from 06.02.2024 to 14.04.2024.

Freshness

Last updated 2026-06-04 07:40:50.690095; freshness should be verified.

Geography

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