PS141 EASI-3: Seabed Glacial Geomorphology Features from East Antarctic Shelf

More than 10,000 nautical miles of hydroacoustic data were collected during the RV Polarstern expedition PS141 (EASI-3) from February to April 2024. The dataset presents preliminary bathymetric and geomorphic mapping results revealing submerged glacial features on the East Antarctic continental shelf. It was prepared by the Australian Ocean Data Network for the Australian Antarctic Research Conference in November 2024.

Use Cases

• Mapping past ice sheet extent and retreat based on identified grounding zone wedges and subglacial basins.
• Analyzing iceberg dynamics and impacts based on recorded iceberg scours.
• Informing contemporary ice sheet models based on the record of past glacier changes.
• Studying seabed topography and its influence on ocean circulation based on multibeam and sub-bottom profiles.

Strengths

• Covers more than 10,000 nautical miles of newly collected hydroacoustic data.
• Reveals a variety of specific glacial features including iceberg scours, mega-scale glacial lineations, subglacial basins, and grounding zone wedges.
• Data was collected during a dedicated research expedition (PS141, EASI-3) in 2024.

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 data collection (continuous multibeam and sub-bottom profiles) from RV Polarstern expedition PS141.

Time Range

Expedition conducted from 6 February to 14 April 2024.

Freshness

Last updated 2026-06-27 21:40:05.093937; freshness should be verified

Geography

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