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AHO Reference Surfaces Darwin 0.5m 2023 (20230012R)

Created 17/10/2025

Updated 17/10/2025

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The Darwin Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 8 Jul 2020. This surface was created from a contracted national reference survey in Darwin NT, collected for the purpose of calibrating multibeam echosounders. It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using R2Sonic 2026 and R2Sonic 2024, and processed using QPS Qimera. Separate grids in 0.5m resolution are provided for the two surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 0.5m resolution, 32 bit floating point GeoTIFF grid of the survey area. This dataset is not to be used for navigational purposes.

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Additional Info

Field Value
Title AHO Reference Surfaces Darwin 0.5m 2023 (20230012R)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/b363ba71-67f1-484a-a3e5-b8021b07e7d2
Contact Point
Geoscience Australia Data
hydro.licensing@defence.gov.au
Reference Period 08/07/2020 - 08/07/2020
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        130.4174,
        -12.41804
      ],
      [
        130.7173,
        -12.41804
      ],
      [
        130.7173,
        -12.09736
      ],
      [
        130.4174,
        -12.09736
      ],
      [
        130.4174,
        -12.41804
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "AHO Reference Surfaces Darwin 0.5m 2023 (20230012R)". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/aho-reference-surfaces-darwin-0-5m-2023-20230012r