National Gravity Compilation 2019: Australian Elevation Geoid Hillshade Image

National Gravity Compilation 2019 Ausdrape elevation geoid image (hillshade HSI) is a digital elevation dataset for Australia. The data were processed from SRTM surface elevation 3 second grid data and vertically continued to a drape surface with a minimum clearance of 250 meters. The grid has a cell size of approximately 435 meters, and the data are provided in units of meters.

Use Cases

• Modeling terrain height variations based on the processed SRTM surface elevation data.
• Analyzing gravity anomalies based on the 2019 Australian National Gravity Grids B series.
• Creating visualizations and maps based on the hillshade HSI image format.
• Conducting geophysical research based on the vertically continued data from ground, airborne, and marine sources.

Strengths

• Data is derived from multiple sources including ground, airborne, and marine satellite altimetry.
• Grid cell size is specified as 0.00417 degrees (approximately 435 meters).
• The drape surface has defined parameters: a minimum clearance of 250 m and 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.
• Freshness should be verified; last metadata update was 2026-04-28 13:41:14.659255.

Provenance

Source

Australian Ocean Data Network

Collection Method

Processed from SRTM 3 second grid data and other sources, vertically continued to a defined drape surface.

Time Range

Likely reflects 2019 compilation.

Freshness

Last updated 2026-04-28 13:41:14.659255; freshness should be verified.

Geography

Australia