<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: 49391832</div><div>name: AHO Reference Surface Banks Strait 2023</div><div>nb-of-points: 4</div><div>north: -40.71861681</div><div>south: -40.72496378</div><div>east: 147.8128447</div><div>west: 147.8068485</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 17-Dec-21</div><div>end-date: 17-Dec-21</div><div>survey area: Banks Strait to Cape Barren, TAS</div><div>platform-class: Boat</div><div>vessel: N/A</div><div>surveyor: N/A</div><div>classification: Official</div><div>abstract: This is a reference surface derived from a contracted survey conducted for the Australian Hydrographic Office for the purpose of calibrating multibeam echosounders as part of the Hydroscheme Industry Partnership Program. The survey area lies within Banks Strait to Cape Barren, TAS</div><div>Lineage (Description): This surface is a 0.5 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Special Order, 1 and 2 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;Full resolution surfaces available from AHO on request under restricted licence.&nbsp;The AHO recommends using these surfaces in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. This dataset is only available for download from [eCat URL].</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 55S</div><div>vertical-datum: Ellipsoidal height (ELLIPS) | Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT)</div><div>instrument-type: Multibeam Echosounder (MBES)</div><div>sensor-type: Kongsberg EM2040 MKII | Kongsberg EM 2040P</div><div>sensor-frequency: 300-400 kHz</div><div>horizontal-positioning-method: Septentrio AsterRx-U Marine GNSS</div><div>vertical-reduction-method: The data was collected using the GPS coordinate system, and converted to Ellipsoidal Height (ELL) by the contractor. The data were reduced from GPS coordinates to Lowest Astronomical Tide (LAT) using an AHO-approved tidal model based on observed tides and adjusted to Mean Sea Level (MSL) by AHO.</div><div>accepted-soundings-accuracy (unit(m)): 0.55</div><div>accepted-positional-accuracy (unit(m)): 1</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: 49391832</div><div>name: AHO Reference Surface Banks Strait 2023</div><div>nb-of-points: 4</div><div>north: -40.71861681</div><div>south: -40.72496378</div><div>east: 147.8128447</div><div>west: 147.8068485</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 17-Dec-21</div><div>end-date: 17-Dec-21</div><div>survey area: Banks Strait to Cape Barren, TAS</div><div>platform-class: Boat</div><div>vessel: N/A</div><div>surveyor: N/A</div><div>classification: Official</div><div>abstract: This is a reference surface derived from a contracted survey conducted for the Australian Hydrographic Office for the purpose of calibrating multibeam echosounders as part of the Hydroscheme Industry Partnership Program. The survey area lies within Banks Strait to Cape Barren, TAS</div><div>Lineage (Description): This surface is a 0.5 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Special Order, 1 and 2 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;Full resolution surfaces available from AHO on request under restricted licence.&nbsp;The AHO recommends using these surfaces in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. This dataset is only available for download from [eCat URL].</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 55S</div><div>vertical-datum: Ellipsoidal height (ELLIPS) | Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT)</div><div>instrument-type: Multibeam Echosounder (MBES)</div><div>sensor-type: Kongsberg EM2040 MKII | Kongsberg EM 2040P</div><div>sensor-frequency: 300-400 kHz</div><div>horizontal-positioning-method: Septentrio AsterRx-U Marine GNSS</div><div>vertical-reduction-method: The data was collected using the GPS coordinate system, and converted to Ellipsoidal Height (ELL) by the contractor. The data were reduced from GPS coordinates to Lowest Astronomical Tide (LAT) using an AHO-approved tidal model based on observed tides and adjusted to Mean Sea Level (MSL) by AHO.</div><div>accepted-soundings-accuracy (unit(m)): 0.55</div><div>accepted-positional-accuracy (unit(m)): 1</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 2021.2</div><div>year of installation: 2021</div><div>number of sensor heads: 1</div><div>number of soundings: 2048</div><div>beamwidth along track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°</div><div>beamwidth across track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°</div><div>pulse length (μs): 14 to 25&nbsp;</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): Variable</div><div>vessel speed (kt): 7.5-8.5 kt vessel 1 |5-6 kt vessel 2</div><div>start port: Bell Point</div><div>end port: Bell Point</div><div>sensor operating mode: Ultra High Density Equidistant Dual Swath</div><div>sensor swath (degrees): 120-140</div><div>grid sounding density: 95% of nodes &gt;5 soundings per node at survey resolution</div><div>processing software: QPS Qimera V2.4.3</div><div>processing methodology: Processed in accordance with HIPP SOR 2021.2 using CUBE techniques, 0.5m CUBE surfaces generated as the final L3 dataset</div><div>grid resolution (m): 0.5m</div><div>number of grids: 3</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, 0.5m 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 0.5m resolution, referenced to MSL, WGS 84 (EPSG:32755).</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><div><br></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 2021.2</div><div>year of installation: 2021</div><div>number of sensor heads: 1</div><div>number of soundings: 2048</div><div>beamwidth along track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°</div><div>beamwidth across track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°</div><div>pulse length (μs): 14 to 25&nbsp;</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): Variable</div><div>vessel speed (kt): 7.5-8.5 kt vessel 1 |5-6 kt vessel 2</div><div>start port: Bell Point</div><div>end port: Bell Point</div><div>sensor operating mode: Ultra High Density Equidistant Dual Swath</div><div>sensor swath (degrees): 120-140</div><div>grid sounding density: 95% of nodes &gt;5 soundings per node at survey resolution</div><div>processing software: QPS Qimera V2.4.3</div><div>processing methodology: Processed in accordance with HIPP SOR 2021.2 using CUBE techniques, 0.5m CUBE surfaces generated as the final L3 dataset</div><div>grid resolution (m): 0.5m</div><div>number of grids: 3</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, 0.5m 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 0.5m resolution, referenced to MSL, WGS 84 (EPSG:32755).</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><div><br></div>