Data

AHO Reference Surfaces Lombadina Point 0.5m 2023 (20230013R)

Geoscience Australia
Australian Hydrographic Office ; Commonwealth of Australia (Australian Hydrographic Office)
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/149073&rft.title=AHO Reference Surfaces Lombadina Point 0.5m 2023 (20230013R)&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/149073&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=The Lombadina Point Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 28 Nov 2022. This surface was created from a contracted national reference survey at Lombadia Point 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, acquired using Kongsberg EM2040P MKII, and processed using QPS Qimera and Caris HIPS & SIPS. A grid in 0.5m resolution is provided for the surveyed site 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.Maintenance and Update Frequency: asNeededStatement: 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.Survey metadata:aho_id: 49391835name: AHO Reference Surface Lombadina Point 2023nb-of-points: 1366north: -16.49417762south: -16.50056008east: 122.748499west: 122.7418835boundingbox-crs: EPSG:4326start-date: 28-Nov-22end-date: 28-Nov-22survey area: Lombadina Point, WAplatform-class: Shipvessel: N/Asurveyor: N/Aexternal-reference: N/Aclassification: Officialabstract: This surface was created from a contracted national reference survey at Lombadina Point 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.Lineage (Description): This surface is a 0.5 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Special Order survey, with an 0.5 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.  AHO Reference Surfaces are created for use as a reference surface for calibration of MBES systems. The AHO recommends using them in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. This dataset is only available for download from AHO.data-owner: Australian Hydrographic Office, Commonwealth of Australiacustodian: Geoscience Australia, Commonwealth of Australiapoint-of-contact: hydro.licensing@defence.gov.aulegal-constraints: Creative Commons CC BY 4.0geodetic-datum: WGS84projection: UTM 51Svertical-datum: Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT) | Ellipsoidal Height (ELLIPS) instrument-type: Multibeam Echosounder (MBES)sensor-type: Kongsberg EM2040P MKIIsensor-frequency: 300 kHzhorizontal-positioning-method: Septentrio AsterX‐U Marine GNSSvertical-reduction-method: The data was collected using a GNSS coordinate system, and converted to Ellipsoidal Height (ELL) by the contractor. The data were reduced from GNSS 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.accepted-soundings-accuracy (unit(m)): 0.21accepted-positional-accuracy (unit(m)): 0.5accepted-survey-order: Special Orderaccepted-survey-order-url: https://iho.int › pubs › S-44_Edition_6.0.0_EN.pdfusage-limitation: Not to be used for Navigationcontact-address: 8 Station St, Wollongong, NSW, Australia 2500GCMD-keyword: EARTH SCIENCE>OCEANS>BATHYMETRY/SEAFLOOR TOPOGRAPHYGA-keyword: AusSeabed, Bathymetry, Marine, Bathymetry Gridsname of survey contractor: N/Astatement_of_requirements: HIPP SOR 2020 v1.2year of installation: 2022number of sensor heads: 2number of soundings: 400-800beamwidth along track (degree): 1.3beamwidth across track (degree): 140pulse length (μs): 14 μsabsorption (dB/km): N/Aselectable depth range (m): 2-150vessel speed (kt): 5-7 ktstart port: Lombadina Point WAend port: Lombadina Point WAsensor operating mode: Dual head - High Density Equidistant sensor swath (degrees): 140grid sounding density: 0.5processing software: QPS Qimera and CARIS HIPSprocessing methodology: Processed in accordance with HIPP SOR 2020 v1.2 using CUBE techniques, 0.5m CUBE surface generated as the final L3 datasetgrid resolution (m): 0.5number of grids: 3Processing methodology:This dataset was produced using CARIS HIPS & SIPS as follow: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).2. Data was provided to Geoscience Australia for publication.3. The final processed grid was exported as a 32-bit floating point Geotiff at 0.5m resolution, referenced to MSL, WGS 84 (EPSG:32751).DATA QUALITYThis 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.Errors found in this dataset should be reported to:Corporate Data ManagerGeoscience AustraliaGPO Box 378Canberra ACT 2601, AustraliaEmail: Sales@ga.gov.auReported Errors will be rectified in subsequent data releases, if any.&rft.creator=Australian Hydrographic Office &rft.creator=Commonwealth of Australia (Australian Hydrographic Office) &rft.date=2023&rft.coverage=westlimit=122.7419; southlimit=-16.50056; eastlimit=122.7485; northlimit=-16.49418; projection=WGS 84 / UTM zone 51S / projected (EPSG: 32751)&rft.coverage=westlimit=122.7419; southlimit=-16.50056; eastlimit=122.7485; northlimit=-16.49418; projection=WGS 84 / UTM zone 51S / projected (EPSG: 32751)&rft_rights=Any&rft_rights=Any&rft_rights=© Commonwealth of Australia (Australian Hydrographic Office) 2023&rft_rights=Australian Government Security Classification System&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security Classification System&rft_subject=geoscientificInformation&rft_subject=EARTH SCIENCES&rft_subject=Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry&rft_subject=bathymetry&rft_subject=multibeam&rft_subject=bathymetric grids&rft_subject=AusSeabed&rft_subject=HVC_144641&rft_subject=Oceans&rft_subject=Published_External&rft_subject=marine&rft.type=dataset&rft.language=English Access the data

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Contact Information

hydro.licensing@defence.gov.au
clientservices@ga.gov.au

Brief description

The Lombadina Point Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 28 Nov 2022. This surface was created from a contracted national reference survey at Lombadia Point 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, acquired using Kongsberg EM2040P MKII, and processed using QPS Qimera and Caris HIPS & SIPS. A grid in 0.5m resolution is provided for the surveyed site 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.

Lineage

Maintenance and Update Frequency: asNeeded
Statement:
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.

Survey metadata:
aho_id: 49391835
name: AHO Reference Surface Lombadina Point 2023
nb-of-points: 1366
north: -16.49417762
south: -16.50056008
east: 122.748499
west: 122.7418835
boundingbox-crs: EPSG:4326
start-date: 28-Nov-22
end-date: 28-Nov-22
survey area: Lombadina Point, WA
platform-class: Ship
vessel: N/A
surveyor: N/A
external-reference: N/A
classification: Official
abstract: This surface was created from a contracted national reference survey at Lombadina Point 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.
Lineage (Description): "This surface is a 0.5 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Special Order survey, with an 0.5 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.  
AHO Reference Surfaces are created for use as a reference surface for calibration of MBES systems. The AHO recommends using them in their native coordinate reference system, as reprojection algorithms may introduce spatial errors. This dataset is only available for download from AHO."
data-owner: Australian Hydrographic Office, Commonwealth of Australia
custodian: Geoscience Australia, Commonwealth of Australia
point-of-contact: hydro.licensing@defence.gov.au
legal-constraints: Creative Commons CC BY 4.0
geodetic-datum: WGS84
projection: UTM 51S
vertical-datum: Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT) | Ellipsoidal Height (ELLIPS) 
instrument-type: Multibeam Echosounder (MBES)
sensor-type: Kongsberg EM2040P MKII
sensor-frequency: 300 kHz
horizontal-positioning-method: Septentrio AsterX‐U Marine GNSS
vertical-reduction-method: The data was collected using a GNSS coordinate system, and converted to Ellipsoidal Height (ELL) by the contractor. The data were reduced from GNSS 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.
accepted-soundings-accuracy (unit(m)): 0.21
accepted-positional-accuracy (unit(m)): 0.5
accepted-survey-order: Special Order
accepted-survey-order-url: https://iho.int › pubs › S-44_Edition_6.0.0_EN.pdf
usage-limitation: Not to be used for Navigation
contact-address: 8 Station St, Wollongong, NSW, Australia 2500
GCMD-keyword: EARTH SCIENCE>OCEANS>BATHYMETRY/SEAFLOOR TOPOGRAPHY
GA-keyword: AusSeabed, Bathymetry, Marine, Bathymetry Grids
name of survey contractor: N/A
statement_of_requirements: HIPP SOR 2020 v1.2
year of installation: 2022
number of sensor heads: 2
number of soundings: 400-800
beamwidth along track (degree): 1.3
beamwidth across track (degree): 140
pulse length (μs): 14 μs
absorption (dB/km): N/A
selectable depth range (m): 2-150
vessel speed (kt): 5-7 kt
start port: Lombadina Point WA
end port: Lombadina Point WA
sensor operating mode: Dual head - High Density Equidistant 
sensor swath (degrees): 140
grid sounding density: 0.5
processing software: QPS Qimera and CARIS HIPS
processing methodology: Processed in accordance with HIPP SOR 2020 v1.2 using CUBE techniques, 0.5m CUBE surface generated as the final L3 dataset
grid resolution (m): 0.5
number of grids: 3


Processing methodology:
This dataset was produced using CARIS HIPS & SIPS as follow:
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).
2. Data was provided to Geoscience Australia for publication.
3. The final processed grid was exported as a 32-bit floating point Geotiff at 0.5m resolution, referenced to MSL, WGS 84 (EPSG:32751).

DATA QUALITY

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.
Errors found in this dataset should be reported to:
Corporate Data Manager
Geoscience Australia
GPO Box 378
Canberra ACT 2601, Australia
Email: Sales@ga.gov.au
Reported Errors will be rectified in subsequent data releases, if any.

Notes

Purpose
Acquiring bathymetry dataset

Issued: 23 11 2023

Data time period: 2021-12-01 to 2022-01-24

This dataset is part of a larger collection

Click to explore relationships graph

122.7485,-16.49418 122.7485,-16.50056 122.7419,-16.50056 122.7419,-16.49418 122.7485,-16.49418

122.7452,-16.49737

text: westlimit=122.7419; southlimit=-16.50056; eastlimit=122.7485; northlimit=-16.49418; projection=WGS 84 / UTM zone 51S / projected (EPSG: 32751)

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Other Information
AHO Reference Surface (Lombadina Point) 2023 0.5m (zip) [42.7MB]

uri : https://files.ausseabed.gov.au/survey/AHO%20Reference%20Surface%20(Lombadina%20Point)%202023%200.5m.zip

Identifiers