c2d3e697-b6e3-44b4-af29-07faf34af859 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-03-07T06:37:10 creation ISO 19115 2016 AHO Reference Surfaces Adelaide 1m 2023 (20230008R) c2d3e697-b6e3-44b4-af29-07faf34af859 The Adelaide Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) during the period 4 Sep 2020 – 16 Sep 2020. This surface was created from a contracted national reference survey in Gulf St Vincent SA, 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 Kongsberg EM 2040 multibeam echosounder and Kongsberg EA440 singlebeam echosounder, and processed using Caris HIPS & SIPS. Separate grids in 1m resolution are provided for the 2 surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 1m resolution, 32 bit floating point GeoTIFF grid of the survey area. This dataset is not to be used for navigational purposes. {"type": "Polygon", "coordinates": [[[138.0692, -34.80833], [138.2479, -34.80833], [138.2479, -34.71521], [138.0692, -34.71521], [138.0692, -34.80833]]]} 138.0692 138.2479 -34.80833 -34.71521 AusSeabed EARTH SCIENCES Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry HVC_144641 Multibeam Oceans Published_External Singlebeam bathymetric grids bathymetry marine AHO ReferenceSurface (Adelaide) 2023 1m (zip) [188.2 MB] documentDigital AHO ReferenceSurface (Adelaide) 2023 1m (zip) [188.2 MB] ZIP