Brief description
The Torres Strait Under Keel Clearance Management Area bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Sea Ranger and SMB White Shark during the period 1 Dec 2021 – 24 Jan 2022. This was a contracted survey conducted for the Australian Hydrographic Office by EGS Survey Pty. Ltd. as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Torres Strait, Queensland. Bathymetry data was acquired using a Kongsberg EM2040D and a Kongsberg EM 2040C, and processed using QPS Qimera 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. 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.
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: 32143410
version: 1
name: SI 1005 Torres Strait, QLD
geoshape: polygon
nb-of-points: 1182
north: -10.4625883
south: -10.6140442
east: 142.4165695
west: 141.8188305
boundingbox-crs: EPSG:
start-date: 1-Dec-21
end-date: 24-Jan-22
survey area: Torres Strait Under Keel Clearance Management Area, QLD
platform-class: ship
vessel: MV Sea Ranger
platform-class: boat
vessel: SMB White Shark
surveyor: Charles Collins, CPHS1
external-reference: SI 1005
classification: Official
abstract: This is a contracted survey conducted for the Australian Hydrographic Office by EGS Survey Pty. Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases Torres Strait, QLD.
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.
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 EM2040D and EM2040C
sensor-frequency: 300 kHz
horizontal-positioning-method: Applanix POSMV v5 with Trimble BD982 – MarinestarG4+
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)): 0.5
accepted-positional-accuracy (unit(m)): 3
accepted-survey-order: Order 1A
accepted-survey-order: 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: EGS Survey Pty. Ltd.
statement_of_requirements: HIPP SOR 2021.2
year of installation: 2021
number of sensor heads: EM2040D - 2, EM 2040C - 1
number of soundings: EM2040D - 1600, EM2040C - 800
beamwidth along track (degree): 1
beamwidth across track (degree): 1
pulse length (μs): Short
absorption (dB/km): N/A
selectable depth range (m): Shallow
vessel speed (kt): 7-9 kt
start port: Cairns, QLD
end port: Cairns, QLD
sensor operating mode: Dual Swath, Equidistant
sensor swath (degrees): 140
grid sounding density: 95% of nodes > 5 soundings per node
processing software: Qimera 2.4.2
processing methodology: Processed in accordance with HIPP SOR 2021.2 using CUBE techniques, 1 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
PurposeAcquiring bathymetry dataset
Created: 13 10 2023
Issued: 09 11 2023
Data time period: 2021-12-01 to 2022-01-24
text: westlimit=141.8188; southlimit=-10.61404; eastlimit=142.4166; northlimit=-10.46259; projection=WGS 84 / geographic 2D (EPSG: 4326)
text: uplimit=-1; downlimit=-23; projection=MSL depth / vertical (EPSG: 5715)
Subjects
AusSeabed |
EARTH SCIENCES |
Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry |
HVC_144641 |
Oceans |
Published External |
Published_External |
bathymetric grids |
bathymetry |
geoscientificInformation |
marine |
multibeam |
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Other Information
Torres Strait Under Keel Clearance, Torres Strait, QLD. (HIPP SI 1005) Bathymetry 2021 30m
Identifiers
- DOI : 10.26186/148971
- URI : pid.geoscience.gov.au/dataset/ga/148971
- global : bfaea22f-845d-4713-8bec-779bb29c63c9
