AUSGeoid98 v.1.0 data files: Macquarie Island

• Other Authors: Commonwealth of Australia (Geoscience Australia) (distributor), Commonwealth of Australia (Geoscience Australia) (owner), Commonwealth of Australia (Geoscience Australia) (pointOfContact), Geoscience Australia (author), LKAY (custodian), MNHD (hasAssociationWith), Manager Client Services (custodian)
• Format: Dataset
• Language: unknown
• Published: Geoscience Australia
• Subjects: imageryBaseMapsEarthCover; Geodetic Data; AUSGeoid98; geodesy; dataset; AU; ENGINEERING; GEOMATIC ENGINEERING; Published_External; Macquarie Island
• Online Access: https://researchdata.edu.au/ausgeoid98-v10-files-macquarie-island/1247101; https://pid.geoscience.gov.au/dataset/ga/63488

Maintenance and Update Frequency: unknown Statement: Unknown AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.