Australia's terrain height variations derived from processed SRTM surface elevation data. The National Gravity Compilation 2019 Ausdrape elevation geoid image provides elevation data for the 2019 Australian National Gravity Grids B series, with a grid cell size of approximately 435 meters. Data from ground, airborne, and marine sources were vertically continued to a drape surface mimicking a smooth airborne survey.
Use Cases
- Generate hillshade visualizations based on the processed elevation geoid image.
- Model gravity anomalies based on the integrated ground, airborne, and marine data.
- Analyze terrain clearance and climb rates based on the described drape surface parameters.
- Create elevation maps for Australia based on the SRTM-derived ground surface data.
Strengths
- Grid cell size is specified as approximately 435 meters.
- Data integrates multiple sources: ground, airborne, and marine derived from satellite altimetry.
- Processing parameters are detailed, including a minimum surface clearance of 250 meters and isotropic maximum climb/descent rates of 25 m per km.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data freshness should be verified; last metadata update was 2026-05-05.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Processed from SRTM surface elevation 3 second grid data, integrated with ground, airborne, and marine gravity data.
- Time Range
- 2019
- Geography
- Australia