Authors / CoAuthors
Australian Hydrographic Office | Commonwealth of Australia (Australian Hydrographic Office)
Abstract
<div>The Howard Channel bathymetry survey was acquired for the Australian Hydrographic Office (AHO) during the period 9 Aug 2023 – 13 Sep 2023. This was a contracted survey conducted for the Australian Hydrographic Office by EGS Australia as part of the Hydroscheme Industry Partnership Program. The survey area encompasses an area in Howard Channel. Bathymetry data was acquired using a Kongsberg EM2040C, and processed using CARIS HIPS and SIPS, and QIMERA processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>
Product Type
dataset
eCat Id
149889
Contact for the resource
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Owner
Point of contact
Resource provider
Digital Object Identifier
Keywords
-
- bathymetry
-
- multibeam
-
- bathymetric grids
-
- AusSeabed
-
- HVC_144641
-
- Oceans
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
- GCMD Keywords
-
- Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry
- ( Instrument )
-
- Multibeam
-
- Published_External
Publication Date
2024-09-13T01:54:19
Creation Date
2024-09-08T02:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
To derive bathymetry for the purpose of supporting the sustainable use of our marine environment and jurisdiction; strengthening our resilience to natural hazards and enabling location-based decisions and actions through best practice digital mapping, Earth observations and precise positioning
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
AusSeabed follows the recommended processing methodology as prescribed by the AusSeabed Multibeam Guidelines (https://australian-multibeam-guidelines.github.io/). 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 most up-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>This surface is a 30 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Order 1A, 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. Full resolution surfaces available from AHO on request under restricted licence.</div><div><br></div><div>Survey metadata:</div><div>aho_id: 53312441</div><div>name: AHO_SI1046_30m_MSL_WGS84</div><div>nb-of-points: 841</div><div>north: -11.980651</div><div>south: -12.187354</div><div>east: 131.257607</div><div>west: 130.846358</div><div>boundingbox-crs: EPSG:4326</div><div>start-date: 9-Aug-23</div><div>end-date: 13-Sep-23</div><div>survey area: Howard Channel, NT</div><div>platform-class: Ship | Boat</div><div>vessel: N/A</div><div>surveyor: N/A</div><div>classification: Official</div><div>abstract: This is a contracted survey conducted for the Australian Hydrographic Office by EGS as part of the Hydroscheme Industry Partnership Program. The survey area is Howard Channel, NT.</div><div>Lineage (Description): This surface is a 30 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Order 1a, 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. Full resolution surfaces available from AHO on request under restricted licence.</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: Latitude/Longitude (WGS 84)</div><div>vertical-datum: Mean Sea Level (MSL) </div><div>instrument-type: EM2040D|EM2040C</div><div>sensor-type: Kongsberg</div><div>sensor-frequency: 300kHz</div><div>horizontal-positioning-method: V5 Applanix POS MV with Trimble RTX</div><div>vertical-reduction-method: Reduced to LAT using an AHO approved tidal model based on observed tides. Final adjustment to MSL by AHO</div><div>accepted-soundings-accuracy (unit(m)): 0.4</div><div>accepted-positional-accuracy (unit(m)): 2.5</div><div>accepted-survey-order: Order 1a</div><div>accepted-survey-order-url: https://iho.int › pubs › S-44_Edition_6.1.0_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: EGS Australia</div><div>statement_of_requirements: HIPP Statement of Requirements 2023.2</div><div>year of installation: 2023</div><div>number of sensor heads: Dual Head</div><div>number of soundings: 512</div><div>beamwidth along track (degree): 0.7° (EM2040D) |1° (EM2040C)</div><div>beamwidth across track (degree): 0.7° (EM2040D) |1° (EM2040C)</div><div>pulse length (μs): 200</div><div>absorption (dB/km): N/A</div><div>selectable depth range (m): max 550</div><div>Vessel speed (kt): 7 to 9 </div><div>start port: Darwin, NT</div><div>end port: Darwin, NT</div><div>sensor operating mode: Dual Swath Mode</div><div>sensor swath (degrees): 70° <30m WD, 60° >30m WD</div><div>grid sounding density: 95% of nodes >5 soundings per node at survey resolution</div><div>processing software: CARIS HIPS&SIPS v 11.4.31|QPS QIMERA v 2.5.4</div><div>processing methodology: Processed in accordance with HIPP SOR 2023.2 using SDTP techniques, 1m CUBE, 1m SDTP and 2m SDTP surfaces generated as the final L3 dataset</div><div>grid resolution (m): 30</div><div>number of grids: 1</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, 1m and 2m 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 30 m resolution, referenced to MSL, WGS 84 (EPSG:4326).</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
[-12.18735, -11.98065, 130.8464, 131.2576]
Reference System
WGS 84 / geographic 2D (EPSG: 4326)
Spatial Resolution
Service Information
Associations
Source Information