gbr100: High-Resolution Bathymetry for the Great Barrier Reef and Coral Sea

gbr100 is a high-resolution bathymetry and Digital Elevation Model covering the Great Barrier Reef, Coral Sea, and Queensland coastline. The dataset has a grid pixel size of 0.001-arc degrees (~100 meters) and was developed by the 3DGBR project, integrating multibeam, singlebeam, lidar, and satellite bathymetry sources. It provides new insights into seabed geomorphic shape and improves upon the current Australian Bathymetry and Topography Grid.

Use Cases

• Modeling seabed geomorphology based on the high-resolution bathymetry grid.
• Analyzing spatial relationships between seabed features using the detailed DEM.
• Assessing total vertical uncertainty for bathymetric measurements based on the provided uncertainty grid.
• Creating visualizations and derived map layers such as hillshading for ocean areas.

Strengths

• High-resolution grid with a pixel size of 0.001-arc degrees (~100 meters).
• Integrates multiple modern data sources including multibeam, singlebeam, lidar, and satellite bathymetry.
• Provides derived products including a total vertical uncertainty grid and hillshading layers.
• Grid dimensions are 19000x18000 pixels, indicating a large spatial coverage.

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 may reflect geographic bias inherent to the specific study area of the Great Barrier Reef and Coral Sea.

Provenance

Source

3DGBR project, utilizing data from Federal and State Government agencies and research expeditions.

Collection Method

Gridding process integrating multibeam, singlebeam, lidar, and satellite bathymetry source datasets.

Freshness

Last updated 2026-07-13 16:29:49.206477; freshness should be verified.

Geography

Great Barrier Reef, Coral Sea, and neighbouring Queensland coastline.