Grounded Icebergs Around Antarctica from Sentinel-1 SAR, 2025

A 2025 dataset from the Australian Ocean Data Network provides a high-resolution, continent-wide map of grounded icebergs around the Antarctic continental shelf. It contains 38,905 stationary iceberg targets with vector polygons, surface area, centroid coordinates, and temporal tracking information. The data is derived from Sentinel-1 Synthetic Aperture Radar imagery captured during the annual landfast sea ice minimum from late February to early April 2025.

Use Cases

• Tracking iceberg movement and stability based on temporal tracking information.
• Analyzing iceberg size distribution and spatial patterns based on surface area and centroid coordinates.
• Studying the relationship between icebergs and landfast sea ice based on the provided classification.
• Mapping Antarctic coastal features and grounding lines based on vector polygon data.

Strengths

• Contains 38,905 stationary iceberg targets, providing a substantial sample size.
• Includes multiple data attributes per target: vector polygons, surface area, centroid coordinates, and temporal tracking.
• Covers the entire Antarctic continental shelf at high resolution.
• Data is provided in a standard polar stereographic projection (EPSG:3031).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to the specific 2025 observation window.

Provenance

Source

Australian Ocean Data Network

Collection Method

Derived from Sentinel-1 Synthetic Aperture Radar (SAR) imagery using deep learning.

Time Range

Late February to early April 2025

Freshness

Last updated 2026-04-28 19:01:42.885305; freshness should be verified.

Geography

Antarctic continental shelf