@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.gov.au/dataset/3c88d854-6c84-43b8-9b7c-b98378e025d0> a dcat:Dataset ;
    dct:description """The Cairns Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 27 May 2020. This surface was created from a contracted national reference survey in Cairns QLD, collected for the purpose of calibrating multibeam echosounders.&nbsp;It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using R2Sonic 2022, and processed using Caris HIPS &amp; SIPS. Seperate grids in 0.5m resolution are provided for the three 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.""" ;
    dct:identifier "3c88d854-6c84-43b8-9b7c-b98378e025d0" ;
    dct:issued "2026-03-05T06:15:48.245402"^^xsd:dateTime ;
    dct:language "eng" ;
    dct:modified "2026-03-05T06:15:48.245410"^^xsd:dateTime ;
    dct:publisher <https://data.gov.au/organization/0143757a-86ab-43e4-bba6-4a3a2a02b6c4> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((145.7834 -16.7807, 146.1981 -16.7807, 146.1981 -16.7070, 145.7834 -16.7070, 145.7834 -16.7807))"^^gsp:wktLiteral ] ;
    dct:title "AHO Reference Surfaces Cairns 0.5m 2023 (20230011R)" ;
    dcat:distribution <https://data.gov.au/dataset/3c88d854-6c84-43b8-9b7c-b98378e025d0/resource/ae211030-1dfc-4a8b-8085-2d3f30ad25de> ;
    dcat:keyword "AusSeabed",
        "EARTH SCIENCES",
        "Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry",
        "HVC_144641",
        "Oceans",
        "Published_External",
        "bathymetric grids",
        "bathymetry",
        "marine",
        "multibeam" .

<https://data.gov.au/dataset/3c88d854-6c84-43b8-9b7c-b98378e025d0/resource/ae211030-1dfc-4a8b-8085-2d3f30ad25de> a dcat:Distribution ;
    dct:description "AHO Reference Surface (Cairns) 2023 0.5m (zip) [299.4 MB]" ;
    dct:format "ZIP" ;
    dct:issued "2026-03-05T06:15:48.246517"^^xsd:dateTime ;
    dct:modified "2026-03-05T06:15:48.236696"^^xsd:dateTime ;
    dct:title "AHO Reference Surface (Cairns) 2023 0.5m (zip) [299.4 MB]" ;
    dcat:accessURL <https://files.ausseabed.gov.au/survey/AHO%20Reference%20Surface%20%28Cairns%29%202023%200.5m.zip> .

<https://data.gov.au/organization/0143757a-86ab-43e4-bba6-4a3a2a02b6c4> a foaf:Agent ;
    foaf:mbox "info@aodn.org.au" ;
    foaf:name "Australian Ocean Data Network" .