Brief description
The Banks Strait Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 17 Dec 2021. This surface was created from a contracted national reference survey within Banks Strait to Cape Barren, TAS, 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 EM 2040 MkII and Kongsberg EM 2040P, and processed using QPS Qimera. 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: 49391832
name: AHO Reference Surface Banks Strait 2023
nb-of-points: 4
north: -40.71861681
south: -40.72496378
east: 147.8128447
west: 147.8068485
boundingbox-crs: EPSG:4326
start-date: 17-Dec-21
end-date: 17-Dec-21
survey area: Banks Strait to Cape Barren, TAS
platform-class: Boat
vessel: N/A
surveyor: N/A
classification: Official
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
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. 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 [eCat URL].
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 55S
vertical-datum: Ellipsoidal height (ELLIPS) | Mean Sea Level (MSL) | Lowest Astronomical Tide (LAT)
instrument-type: Multibeam Echosounder (MBES)
sensor-type: Kongsberg EM2040 MKII | Kongsberg EM 2040P
sensor-frequency: 300-400 kHz
horizontal-positioning-method: Septentrio AsterRx-U Marine GNSS
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.
accepted-soundings-accuracy (unit(m)): 0.55
accepted-positional-accuracy (unit(m)): 1
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 Statement of Requirements 2021.2
year of installation: 2021
number of sensor heads: 1
number of soundings: 2048
beamwidth along track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°
beamwidth across track (degree): EM 2040 MkII - 0.5 (Tx) x 1.0 (Rx) | EM 2040P - 1.3°
pulse length (μs): 14 to 25
absorption (dB/km): N/A
selectable depth range (m): Variable
vessel speed (kt): 7.5-8.5 kt vessel 1 |5-6 kt vessel 2
start port: Bell Point
end port: Bell Point
sensor operating mode: Ultra High Density Equidistant Dual Swath
sensor swath (degrees): 120-140
grid sounding density: 95% of nodes >5 soundings per node at survey resolution
processing software: QPS Qimera V2.4.3
processing methodology: Processed in accordance with HIPP SOR 2021.2 using CUBE techniques, 0.5m CUBE surfaces generated as the final L3 dataset
grid resolution (m): 0.5m
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:32755).
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
PurposeAcquiring bathymetry dataset
Issued: 21 11 2023
Data time period: 2021-12-17 to 2021-12-17
text: westlimit=147.8068; southlimit=-40.72496; eastlimit=147.8128; northlimit=-40.71862; projection=WGS 84 / UTM zone 55S / projected (EPSG: 32755)
text: uplimit=-33; downlimit=-35; projection=MSL depth / vertical (EPSG: 5715)
Subjects
AusSeabed |
EARTH SCIENCES |
Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry |
HVC_144641 |
Oceans |
Published_External |
bathymetric grids |
bathymetry |
geoscientificInformation |
marine |
multibeam |
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Other Information
AHO ReferenceSurface (Banks Strait) 2023 0.5m (zip) [63.7 MB]
uri :
https://files.ausseabed.gov.au/survey/AHO%20ReferenceSurface%20(Banks%20Strait)%202023%200.5m.zip
Identifiers
- DOI : 10.26186/149071
- URI : pid.geoscience.gov.au/dataset/ga/149071
- global : fb89aea2-6531-4928-b162-506bf0c1d848
