Authors / CoAuthors
Australian Hydrographic Office | Commonwealth of Australia (Australian Hydrographic Office)
Abstract
<div>The Rottnest Reference Surface was created from a bathymetry survey acquired for the Australian Hydrographic Office (AHO) on 11 December 2022. This surface was created from a contracted national reference survey adjacent to Rottnest Island, WA, collected for the purpose of calibrating multibeam echosounders. It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, using a Kongsberg EM2040P and processed using Caris HIPS & SIPS. Separate grids in 0.5m and 2m resolution are provided for the two surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datums. The datasets were exported as 0.5m and 2m resolution, 32-bit floating point GeoTIFF grids.</div><br><div>This dataset is not to be used for navigational purposes.</div>
Product Type
dataset
eCat Id
149392
Contact for the resource
Point of contact
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Owner
Point of contact
Resource provider
Digital Object Identifier
Keywords
-
- bathymetry
-
- bathymetric grids
-
- AusSeabed
-
- HVC_144641
-
- Oceans
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- GCMD Keywords
-
- Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry
- ( Instrument )
-
- Multibeam
-
- Published_External
Publication Date
2024-04-22T00:18:40
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
Acquiring bathymetry dataset
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
<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</div><div> 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: 49399637</div><div>name: AHO Reference Surface Rottnest, WA</div><div>nb-of-points: 4</div><div>north: -31.961126</div><div>south: -32.101048</div><div>east: 115.637137</div><div>west: 115.307799</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 11-Dec-22</div><div>end-date: 11-Dec-22</div><div>survey area: Cape Leeuwin, WA</div><div>platform-class: Ship</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 adjacent to Rottnest Island, WA</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 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. Full resolution surfaces available from AHO on request under restricted licence. 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 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 50S</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 EM2040P</div><div>sensor-frequency: 300 kHz</div><div>horizontal-positioning-method: iXblue ROVINS Inertial Navigation System - Interfaced to Veripos LD8 GNSS Receiver (Apex service PPP)</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)): 0.23</div><div>accepted-positional-accuracy (unit(m)): 0.76</div><div>accepted-survey-order: Order 1A</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>OCEANS>BATHYMETRY/SEAFLOOR TOPOGRAPHY</div><div>GA-keyword: AusSeabed, Bathymetry, Marine, Bathymetry Grids</div><div>name of survey contractor: MMA</div><div>statement_of_requirements: HIPP SOR 2022.3</div><div>year of installation: 2022</div><div>number of sensor heads: 1</div><div>number of soundings: 1024</div><div>beamwidth along track (degree): 1.3</div><div>beamwidth across track (degree): 1.3</div><div>pulse length (μs): 150</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): N/A</div><div>vessel speed (kt): 8</div><div>start port: Fremantle, WA</div><div>end port: Fremantle, WA</div><div>sensor operating mode: Equidistant dynamic dual ping mode.</div><div>sensor swath (degrees): 65-70</div><div>grid sounding density: 95% of nodes >5 soundings per node at survey resolution</div><div>processing software: Teledyne Caris HIPS</div><div>processing methodology: Processed in accordance with HIPP SOR 2022.3 using CUBE techniques, 1 CUBE surfaces generated as the final L3 dataset</div><div>grid resolution (m): 0.5m, 2m</div><div>number of grids: 4</div><div><br></div><div><br></div><div>Processing methodology:</div><div>This dataset was produced using CARIS HIPS & 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, ITRF2014/Transverse Mercator.</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>
Parent Information
Extents
[-32.10105, -31.96113, 115.3078, 115.6371]
Reference System
WGS 84 / UTM zone 50S / projected (EPSG: 32750)
Spatial Resolution
Service Information
Associations
Source Information