Brief description
The Bass Pyramid to Wright Block bathymetry survey was acquired for the Australian Hydrographic Office (AHO) during the period 16 Oct 2023 – 10 Jan 2024. This was a contracted survey conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program. The survey area encompasses an area in Bass Pyramid to Wright Block. Bathymetry data was acquired using a Kongsberg EM2040-07, and processed using CARIS HIPS and SIPS processing software. The dataset was then exported as a 30m 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 (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.
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.
Survey metadata:
aho_id: 55841082
name: AHO_SI1030_30m_MSL_WGS84
nb-of-points: 1223
north: -39.504672
south: -39.974132
east: 147.718606
west: 147.028700
boundingbox-crs: EPSG: 4326
start-date: 16-Oct-23
end-date: 10-Jan-24
survey area: Bass Pyramid to Wright Rock,TAS
platform-class: Ship
vessel: N/A
surveyor: N/A
classification: Official
abstract: This is a contracted survey conducted for the Australian Hydrographic Office by Guardian Geomatics as part of the Hydroscheme Industry Partnership Program. The survey area is Bass Pyramid to Wright Rock, TAS.
Lineage (Description): This surface is a 30 metre Shoal Depth True Position (SDTP) surface derived from International Hydrographic Organisation (IHO) Order 1a, 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.
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: Latitude/Longitude (WGS 84)
vertical-datum: Mean Sea Level (MSL)
instrument-type: Multibeam Echosounder (MBES)
sensor-type: Kongsberg EM2040-07
sensor-frequency: 300 kHz
horizontal-positioning-method: Trimble BD982 with Marinestar G4+ corrections
vertical-reduction-method: Reduced to LAT using an AHO approved tidal model based on observed tides. Final adjustment to MSL by AHO.
accepted-soundings-accuracy (unit(m)): 0.3
accepted-positional-accuracy (unit(m)): 0.9
accepted-survey-order: Order 1a
accepted-survey-order-url: https://iho.int › pubs › S-44_Edition_6.1.0_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 2023.2
year of installation: 2023
number of sensor heads: 1
number of soundings: 400
beamwidth along track (degree): 1
beamwidth across track (degree): 0.5
pulse length (μs): 200
absorption (dB/km): N/A
selectable depth range (m): <465m
vessel speed (kt): 6-7
start port: Hobart, TAS
end port: Hobart, TAS
sensor operating mode: Dual Swath - Dynamic
sensor swath (degrees): 60-70
grid sounding density: 95% of nodes >5 soundings per node at survey resolution
processing software: CARIS HIPS and SIPS v11.4.31
processing methodology: Processed in accordance with HIPP SOR 2023.2 using SDTP techniques, 1m and 2m CUBE surfaces generated as the final L3 dataset
grid resolution (m): 30
number of grids: 1
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, 1m and 2m 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 30 m resolution, referenced to MSL, WGS 84 (EPSG:4326).
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
PurposeTo 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
Created: 08 09 2024
Issued: 13 09 2024
Data time period: 2023-10-16 to 2024-01-10
text: westlimit=147.0287; southlimit=-39.97413; eastlimit=147.7186; northlimit=-39.50467; projection=WGS 84 / geographic 2D (EPSG: 4326)
text: uplimit=-6; downlimit=-82; projection=MSL depth / vertical (EPSG: 5715)
Subjects
AusSeabed |
EARTH SCIENCES |
Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry |
HVC_144641 |
Multibeam |
Oceans |
Published_External |
bathymetric grids |
bathymetry |
geoscientificInformation |
multibeam |
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Other Information
Bass Pyramid to Wright Block (HIPP SI 1030) Bathymetry 2023 30m (zip) [122.9 MB]
Identifiers
- DOI : 10.26186/149884
- URI : pid.geoscience.gov.au/dataset/ga/149884
- global : ae417a4a-1fd1-4393-a6c5-0fc0a847c84a
