A New High-resolution Depth Model for the Terre Adélie and George V Shelf and Margin, Eas

GVdem is a high-resolution depth model for the Terre Adélie and George V shelf and margin in East Antarctica. It combines shiptrack and multibeam bathymetry with coastline and land topographic data, covering an area from 138°E to 148°E longitude and 63°S to 69°S latitude. The model is provided in three ESRI grid resolutions: 15 arcsec, 9 arcsec, and 3.6 arcsec.

Use Cases

• Improving physical oceanographic models based on the high-resolution bathymetry.
• Analyzing seabed physiographic detail, such as inner-shelf depressions and flat-topped banks.
• Spatial planning and habitat mapping for marine research in the East Antarctic region.
• Studying the relationship between large shelf basins and adjacent seabed features.

Strengths

• Covers a specific Antarctic region spanning 138°E to 148°E longitude and 63°S to 69°S latitude.
• Offers three grid resolutions (15 arcsec, 9 arcsec, 3.6 arcsec) for flexibility.
• Integrates multiple data sources: shiptrack and multibeam bathymetry, coastline, and land topography.

Limitations

• 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

Combined available shiptrack and multibeam bathymetry, coastline and land topographic data.

Freshness

Last updated 2026-06-04 10:12:23.646425; freshness should be verified.

Geography

Terre Adélie and George V shelf and margin, East Antarctica (138°E to 148°E, 63°S to 69°S).