<div>AusSeabed follows the recommended processing methodology as prescribed by the AusSeabed Multibeam Guidelines. Please note that certain products are subject to routine update (e.g. resolution, coverage, temporal variation, guidelines/best practice). The client is advised to refer to the latest version of all documents and products for the mostup-to-date material. For eCat records the version is expressed in the record title whilst products incorporate date of production as per AusSeabed’s file naming convention.</div><div><br></div><div>Survey metadata:</div><div>aho_id: 49391825</div><div>name: AHO Reference Surface Adelaide 2023</div><div>nb-of-points: 1850</div><div>north: -34.71520676</div><div>south: -34.80832719</div><div>east: 138.2478669</div><div>west: 138.069167</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 4/09/2020</div><div>end-date: 16/09/2020</div><div>survey area: Gulf St Vincent, SA</div><div>platform-class: Boat</div><div>vessel: N/A</div><div>surveyor: N/A</div><div>classification: Official</div><div>abstract: "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.&nbsp;</div><div>Separate grids are provided for the 2 surveyed sites within this survey area."</div><div>Lineage (Description): "These surfaces are 1-metre Shoal Depth True Position (SDTP) surfaces derived from International Hydrographic Organisation (IHO) Special Order survey, with 1-metre Combined Uncertainty and Bathymetry Estimator (CUBE) surfaces supplied to the Australian Hydrographic Office (AHO), with depth, position, density and uncertainty preserved from the original surface.&nbsp;&nbsp;</div><div>AHO Reference Surfaces are created for the calibration of MBES systems. The AHO recommends using them in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. Therefore, this dataset is only available for download from AHO."</div><div>data-owner: Australian Hydrographic Office, Commonwealth of Australia</div><div>custodian: Geoscience Australia, Commonwealth of Australia</div><div>point-of-contact: hydro.licensing@defence.gov.au</div><div>legal-constraints: Creative Commons CC BY 4.0</div><div>geodetic-datum: WGS84</div><div>projection: UTM 53 S</div><div>vertical-datum: Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT) | Ellipsoidal Height (ELLIPS)&nbsp;</div><div>instrument-type: Multibeam Echo Sounder (MBES)</div><div>sensor-type: Kongsberg EM 2040 | Kongsberg EA440 single</div><div>sensor-frequency: 200-400 kHz</div><div>horizontal-positioning-method: Applanix POS MV Wave Master V5. Position was provided by Fugro Starpack GNSS satellite corrected solution.</div><div>vertical-reduction-method: The data was collected using the GNSS coordinate reference system, then reduced to Lowest Astronomical Tide (LAT) using an AHO-approved tidal model based on observed tides. Final adjustment to Mean Sea Level (MSL) by AHO. The data was converted from GNSS coordinates to ellipsoidal height by the contractor.</div><div>accepted-soundings-accuracy (unit(m)): 0.25</div><div>accepted-positional-accuracy (unit(m)): 0.41</div><div>accepted-survey-order: Special Order</div><div>accepted-survey-order-url: hydro.licensing@defence.gov <div>AusSeabed follows the recommended processing methodology as prescribed by the AusSeabed Multibeam Guidelines. Please note that certain products are subject to routine update (e.g. resolution, coverage, temporal variation, guidelines/best practice). The client is advised to refer to the latest version of all documents and products for the mostup-to-date material. For eCat records the version is expressed in the record title whilst products incorporate date of production as per AusSeabed’s file naming convention.</div><div><br></div><div>Survey metadata:</div><div>aho_id: 49391825</div><div>name: AHO Reference Surface Adelaide 2023</div><div>nb-of-points: 1850</div><div>north: -34.71520676</div><div>south: -34.80832719</div><div>east: 138.2478669</div><div>west: 138.069167</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 4/09/2020</div><div>end-date: 16/09/2020</div><div>survey area: Gulf St Vincent, SA</div><div>platform-class: Boat</div><div>vessel: N/A</div><div>surveyor: N/A</div><div>classification: Official</div><div>abstract: "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.&nbsp;</div><div>Separate grids are provided for the 2 surveyed sites within this survey area."</div><div>Lineage (Description): "These surfaces are 1-metre Shoal Depth True Position (SDTP) surfaces derived from International Hydrographic Organisation (IHO) Special Order survey, with 1-metre Combined Uncertainty and Bathymetry Estimator (CUBE) surfaces supplied to the Australian Hydrographic Office (AHO), with depth, position, density and uncertainty preserved from the original surface.&nbsp;&nbsp;</div><div>AHO Reference Surfaces are created for the calibration of MBES systems. The AHO recommends using them in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. Therefore, this dataset is only available for download from AHO."</div><div>data-owner: Australian Hydrographic Office, Commonwealth of Australia</div><div>custodian: Geoscience Australia, Commonwealth of Australia</div><div>point-of-contact: hydro.licensing@defence.gov.au</div><div>legal-constraints: Creative Commons CC BY 4.0</div><div>geodetic-datum: WGS84</div><div>projection: UTM 53 S</div><div>vertical-datum: Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT) | Ellipsoidal Height (ELLIPS)&nbsp;</div><div>instrument-type: Multibeam Echo Sounder (MBES)</div><div>sensor-type: Kongsberg EM 2040 | Kongsberg EA440 single</div><div>sensor-frequency: 200-400 kHz</div><div>horizontal-positioning-method: Applanix POS MV Wave Master V5. Position was provided by Fugro Starpack GNSS satellite corrected solution.</div><div>vertical-reduction-method: The data was collected using the GNSS coordinate reference system, then reduced to Lowest Astronomical Tide (LAT) using an AHO-approved tidal model based on observed tides. Final adjustment to Mean Sea Level (MSL) by AHO. The data was converted from GNSS coordinates to ellipsoidal height by the contractor.</div><div>accepted-soundings-accuracy (unit(m)): 0.25</div><div>accepted-positional-accuracy (unit(m)): 0.41</div><div>accepted-survey-order: Special Order</div><div>accepted-survey-order-url: https://iho.int › pubs › S-44_Edition_6.0.0_EN.pdf</div><div>usage-limitation: Not to be used for Navigation</div><div>contact-address: 8 Station St, Wollongong, NSW, Australia 2500</div><div>GCMD-keyword: EARTH SCIENCE&gt;OCEANS&gt;BATHYMETRY/SEAFLOOR TOPOGRAPHY</div><div>GA-keyword: AusSeabed, Bathymetry, Marine, Bathymetry Grids</div><div>name of survey contractor: N/A</div><div>statement_of_requirements: HIPP Statement of Requirements 2020 v1.2</div><div>year of installation: 2020</div><div>number of sensor heads: 2</div><div>number of soundings: 400</div><div>beamwidth along track (degree): 1.3</div><div>beamwidth across track (degree): 1.3</div><div>pulse length (μs): N/A</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): N/A</div><div>vessel speed (kt): 6</div><div>start port: Adelaide, SA</div><div>end port: Adelaide, SA</div><div>sensor operating mode: Single Head/Dual Swath - Dynamic</div><div>sensor swath (degrees): 135°</div><div>grid sounding density: 95% of nodes &gt;5 soundings per node at survey resolution</div><div>processing software: CARIS HIPS&amp;SIPS v11.3</div><div>processing methodology: Processed in accordance with HIPP SOR 2020 v1.2 using CUBE techniques, 1 and 2m CUBE surfaces generated as the final L3 dataset</div><div>grid resolution (m): 1</div><div>number of grids: 6</div><div><br></div><div><br></div><div>Processing methodology:</div><div>This dataset was produced using CARIS HIPS &amp; SIPS as follow:</div><div>1. Processed in accordance with HIPP SOR 2020v 1.2 using CUBE techniques, 1m CUBE surfaces generated as the final L3 product (a gridded surface derived from cleaned point data).</div><div>2. Data was provided to Geoscience Australia for publication.</div><div>3. The final processed grid was exported as a 32-bit floating point Geotiff at 1m resolution, referenced to MSL, WGS 84 (EPSG:32753).</div><div><br></div><div>DATA QUALITY</div><div><br></div><div>This dataset has been subject to independent post-production validation and testing. Tests have been performed for data completeness, correct spatial representation, attribute accuracy, logical consistency, metadata completeness and correctness, and where appropriate for compliance with Geoscience Australia's data dictionaries.</div><div>Errors found in this dataset should be reported to:</div><div>Corporate Data Manager</div><div>Geoscience Australia</div><div>GPO Box 378</div><div>Canberra ACT 2601, Australia</div><div>Email: Sales@ga.gov.au</div><div>Reported Errors will be rectified in subsequent data releases, if any.</div> Sales@ga.gov › pubs › S-44_Edition_6.0.0_EN.pdf</div><div>usage-limitation: Not to be used for Navigation</div><div>contact-address: 8 Station St, Wollongong, NSW, Australia 2500</div><div>GCMD-keyword: EARTH SCIENCE&gt;OCEANS&gt;BATHYMETRY/SEAFLOOR TOPOGRAPHY</div><div>GA-keyword: AusSeabed, Bathymetry, Marine, Bathymetry Grids</div><div>name of survey contractor: N/A</div><div>statement_of_requirements: HIPP Statement of Requirements 2020 v1.2</div><div>year of installation: 2020</div><div>number of sensor heads: 2</div><div>number of soundings: 400</div><div>beamwidth along track (degree): 1.3</div><div>beamwidth across track (degree): 1.3</div><div>pulse length (μs): N/A</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): N/A</div><div>vessel speed (kt): 6</div><div>start port: Adelaide, SA</div><div>end port: Adelaide, SA</div><div>sensor operating mode: Single Head/Dual Swath - Dynamic</div><div>sensor swath (degrees): 135°</div><div>grid sounding density: 95% of nodes &gt;5 soundings per node at survey resolution</div><div>processing software: CARIS HIPS&amp;SIPS v11.3</div><div>processing methodology: Processed in accordance with HIPP SOR 2020 v1.2 using CUBE techniques, 1 and 2m CUBE surfaces generated as the final L3 dataset</div><div>grid resolution (m): 1</div><div>number of grids: 6</div><div><br></div><div><br></div><div>Processing methodology:</div><div>This dataset was produced using CARIS HIPS &amp; SIPS as follow:</div><div>1. Processed in accordance with HIPP SOR 2020v 1.2 using CUBE techniques, 1m CUBE surfaces generated as the final L3 product (a gridded surface derived from cleaned point data).</div><div>2. Data was provided to Geoscience Australia for publication.</div><div>3. The final processed grid was exported as a 32-bit floating point Geotiff at 1m resolution, referenced to MSL, WGS 84 (EPSG:32753).</div><div><br></div><div>DATA QUALITY</div><div><br></div><div>This dataset has been subject to independent post-production validation and testing. Tests have been performed for data completeness, correct spatial representation, attribute accuracy, logical consistency, metadata completeness and correctness, and where appropriate for compliance with Geoscience Australia's data dictionaries.</div><div>Errors found in this dataset should be reported to:</div><div>Corporate Data Manager</div><div>Geoscience Australia</div><div>GPO Box 378</div><div>Canberra ACT 2601, Australia</div><div>Email: Sales@ga.gov.au</div><div>Reported Errors will be rectified in subsequent data releases, if any.</div>