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

Preliminary results from the RV Polarstern Expedition PS141, which collected over 7500 nautical miles of hydroacoustic data from the largely unexplored Davis and Mawson Sea continental shelves. The data reveal sediment transport features and glacial landscapes, including iceberg scours and grounding zone wedges. The expedition was conducted from February to April 2024 as part of the EASI-3 project to investigate East Antarctic Ice Sheet interactions.

Use Cases

• Reconstructing past ice sheet dynamics based on mapped mega-scale glacial lineations.
• Analyzing sediment transport pathways based on features identified from the continental slope to the shelf.
• Modeling subglacial hydrology based on the identification of subglacial lake features.
• Studying iceberg grounding and scouring patterns based on mapped iceberg scours.

Strengths

• Covers a largely unexplored region of the East Antarctic margin between 85°E and 115°E.
• Includes over 7500 nautical miles of continuous multibeam bathymetry and sediment echography 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.
• Data is presented as preliminary results from a conference abstract, which may indicate incomplete analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Data collected during expedition from 06.02.2024 to 14.04.2024.

Freshness

Last updated 2026-04-30 13:40:07.120642; freshness should be verified.

Geography

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