National Gravity Compilation 2019: Australian Elevation Geoid Hillshade Image

Australian terrain elevation data processed from SRTM surface elevation and used for the 2019 Australian National Gravity Grids B series. The grid has a cell size of 0.00417 degrees, approximately 435 meters, and data from ground, airborne, and marine sources were vertically continued to a drape surface. Geoscience Australia Data produced this dataset, which was last updated in 2026.

Use Cases

• Modeling regional gravity anomalies based on the processed SRTM surface elevation data.
• Creating terrain visualizations and hillshade maps based on the elevation geoid image.
• Analyzing topographic features for geological studies based on the 435-meter resolution grid.
• Integrating elevation data with other geophysical datasets for the 2019 National Gravity Grids project.

Strengths

• Grid cell size is specified as 0.00417 degrees, approximately 435 meters.
• Data integrates multiple sources: ground, airborne, and marine-derived from satellite altimetry.
• Vertical processing used a defined drape surface with a 250-meter minimum clearance and 25 m/km climb/descent rates.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Processed from SRTM 3-second grid data, with ground, airborne, and marine data vertically continued to a drape surface.

Time Range

2019

Freshness

Last updated 2026-04-30 12:53:47.309323; freshness should be verified.

Geography

Australia