Brief description
The Van Diemen Gulf (North-West Inshore Route) bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Offshore Guardian and the MV Speical Order during the period 26 Jun 2021 – 5 Oct 2021. This was a contracted survey conducted for the Australian Hydrographic Office by Guardian Geomatics as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Van Diemen Gulf (North-West Inshore Route), NT. Bathymetry data was acquired using a Kongsberg EM2040-07 MKII, 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. 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: 30189477
name: SI 1003 Van Diemen Gulf, NT
north: -11.372483
south: -11.948239
east: 131.676115
west: 131.117314
boundingbox-crs: EPSG:4326
start-date: 26-Jun-21
end-date: 5-Oct-21
survey area: Van Diemen Gulf, NT
platform-class: Ship
vessel: MV Offshore Guardian | MV Speical Order
surveyor: John Mullally, CPHS1
external-reference: SI 1003
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 encompases Van Diemen Gulf, NT.
Lineage (Description): This surface is a 30 metre Shoal Depth True Position (SDTP) surface derived from IHO Order 1A 1 and 2 metre Combined Uncertainty and Bathymetry Estimator (CUBE) surfaces supplied to the AHO, with depth, position, density and uncertainty preserved from the original surface. Full resolution surfaces may be 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 MKII
sensor-frequency: 300-400 kHz
horizontal-positioning-method: Starpack AE G2 corrections interfaced to a iXblue ROVINS
vertical-reduction-method: Reduced to LAT using an AHO approved tidal model based on observed tides, and then shifted to MSL using AHO MSL-LAT model.
accepted-soundings-accuracy (unit(m)): 0.81 @ 90m
accepted-positional-accuracy (unit(m)): 1
accepted-survey-order: Order 1A
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: Guardian Geomatics
statement_of_requirements: HIPP SOR 2021.1
year of installation: 2021
number of sensor heads: 1
number of soundings: 1024
beamwidth along track (degree): 0.7°
beamwidth across track (degree): 0.7°
pulse length (μs): N/A
absorption (dB/km): N/A
selectable depth range (m): Medium
vessel speed (kt): 5 - 7 Knots
start port: Darwin
end port: Darwin
sensor operating mode: Ultra High Density
sensor swath (degrees): 120° to 140°
grid sounding density: 95% of nodes >5 soundings per node at survey resolution
processing software: CARIS HIPS and SIPS v 11.3.21
processing methodology: Processed in accordance with HIPP SOR 2021.1 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
Issued: 08 01 2024
Data time period: 2021-06-26 to 2021-10-05
text: westlimit=131.1173; southlimit=-11.94824; eastlimit=131.6761; northlimit=-11.37248; projection=WGS 84 / geographic 2D (EPSG: 4326)
text: uplimit=-1; downlimit=-82; 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 |
multibeam |
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Other Information
Van Diemen Gulf (North-West Inshore Route), NT (HIPP SI 1003) Bathymetry 2021 30m (zip) [13.3 MB]
Identifiers
- DOI : 10.26186/149145
- URI : pid.geoscience.gov.au/dataset/ga/149145
- global : 9733a4a1-a6b0-49fc-b696-fd4a8ec48bb1
