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National Gravity Compilation 2019 Ausdrape elevation ellipsoid image (hillshade HSI)

Created 20/01/2026

Updated 20/01/2026

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Digital Elevation data record the terrain height variations from the processed SRTM surface elevation 3 second grid data with a drape surface overlain. This National Gravity Compilation 2019 Ausdrape elevation ellipsoid image (hillshade HSI) contains the elevation of the observation surface for the 2019 Australian National Gravity Grids B series relative to the GRS80 ellipsoid (GDA94 datum). These data are used in the project No. 202008. The grid used to produce this image has a cell size of 0.00417 degrees (approximately 435m). All data (i.e., ground, airborne and marine derived from satellite altimetry) were vertically continued to this surface during processing. The surface was generated to mimic a smooth airborne survey drape surface with a minimum surface clearance of 250 m and an isotropic maximum climb and descent rates of 25 m per km. The ground surface data were derived from SRTM data with 3 second grid cell size. The data are given in units of meters.

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Additional Info

Field Value
Title National Gravity Compilation 2019 Ausdrape elevation ellipsoid image (hillshade HSI)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/9a2dbfe3-e770-4bac-b089-63610b1239fe
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 19/06/2019 - 01/10/1947
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        107.9979,
        -48.0021
      ],
      [
        164.0021,
        -48.0021
      ],
      [
        164.0021,
        -7.9979
      ],
      [
        107.9979,
        -7.9979
      ],
      [
        107.9979,
        -48.0021
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "National Gravity Compilation 2019 Ausdrape elevation ellipsoid image (hillshade HSI)". Please visit the source to access the original metadata of the dataset:
https://data.gov.au/data/dataset/national-gravity-compilation-2019-ausdrape-elevation-ellipsoid-image-hillshade-hsi4