Product catalogue
High-resolution Autonomous Underwater Vehicle (AUV) Backscatter Grids - Caswell Sub-basin, Browse Basin Marine Survey (GA0345/GA0346/TAN1411)
Geoscience Australia (GA) conducted a marine survey (GA0345/GA0346/TAN1411) of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014 to acquire seabed and shallow geological information to support an assessment of the CO2 storage potential of the basin. The survey, undertaken as part of the Department of Industry and Science's National CO2 Infrastructure Plan (NCIP), aimed to identify and characterise indicators of natural hydrocarbon or fluid seepage that may indicate compromised seal integrity in the region.
The survey was conducted in three legs aboard the New Zealand research vessel RV Tangaroa, and included scientists and technical staff from GA, the NZ National Institute of Water and Atmospheric Research Ltd. (NIWA) and Fugro Survey Pty Ltd. Shipboard data (survey ID GA0345) collected included multibeam sonar bathymetry and backscatter over 12 areas (A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1, M1) totalling 455 km2 in water depths ranging from 90 - 430 m, and 611 km of sub-bottom profile lines. Seabed samples were collected from 48 stations and included 99 Smith-McIntyre grabs and 41 piston cores. An Autonomous Underwater Vehicle (AUV) (survey ID GA0346) collected higher-resolution multibeam sonar bathymetry and backscatter data, totalling 7.7 km2, along with 71 line km of side scan sonar, underwater camera and sub-bottom profile data. Twenty two Remotely Operated Vehicle (ROV) missions collected 31 hours of underwater video, 657 still images, eight grabs and one core.
Following shipboard multibeam mapping, higher-resolution multibeam data were acquired in targeted areas (prior to instrument failure) using a Kongsberg Simrad EM2000 system mounted to Fugro's Echo Surveyor V (ES-5) AUV. This instrument had a depth rating of 3000 m, and surveyed the seafloor according to a pre-programmed mission plan. The AUV was fitted with a camera and light system designed to produce images of equal width and height (in the context of this survey, the images comprised 8 m by 8 m of seafloor). The equipment consisted of a light sensitive NEO 11 Megapixel 35 mm monochrome CCD (4008 x 2672) camera and two LED panels, each comprising 360 LEDs. High-resolution multibeam bathymetric data was collected together with side scan sonar and sub bottom profile data at an elevation of 30 m above the seafloor, and at line spacing's of 100 m. Overlapping high-resolution still photographs (captured every second) were then acquired on the survey lines at an elevation of 8 m above the seafloor. The AUV was equipped with an advanced real-time Aided Inertial Navigation System, which calculated the position, velocity and altitude of the vehicle and a HiPAP 500 USBL system was used to acoustically position the AUV.
This catalogue entry refers to the five backscatter patches (A3 Patch 1, A3 Patch 2, A4 Patch 1, A4 Patch 2, A4 Patch 3) mapped using a Kongsberg Simrad EM2000 system mounted to Fugro's Echo Surveyor V (ES-5) AUV.
Simple
Identification info
- Date (Creation)
- 2015-01-01T00:00:00
- Date (Publication)
- 2016-06-06T15:00:00
- Date (Revision)
- 2019-04-08T05:53:44
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/83919
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Siwabessy, J.
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- Name
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Record
- Point of contact
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Role Organisation / Individual Name Details Custodian RD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
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- Oceans
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Theme
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Exclusive Economic Zone
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- Theme
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backscatter
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- Theme
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marine environmental baselines
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- Theme
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marine survey
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- Theme
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geological storage of CO2
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- Keywords
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Australian EEZ
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Marine Geoscience
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the data (esri ascii)
Download the data (esri ascii)
- OnLine resource
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Download the data (esri grid)
Download the data (esri grid)
- OnLine resource
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Download the data (geotif)
Download the data (geotif)
- OnLine resource
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Download the data (kml)
Download the data (kml)
- OnLine resource
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Download the metadata (pdf)
Download the metadata (pdf)
- OnLine resource
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Download the data (xyz ascii)
Download the data (xyz ascii)
- OnLine resource
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Caswell Sub-basin - Browse Basin CO2 data package
Caswell Sub-basin - Browse Basin CO2 data package
Resource lineage
- Statement
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Version 1
- Hierarchy level
- Dataset
- Description
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Datasets collected and in WGS84 UTM 51 S, extent indicator for the metadata record however is in GDA94 to be consistent with other national scale metadata records. The multibeam bathymetry was acquired by the following survey: - Processing software: CARIS HIPS & SIPS v7.1 SP2 - Survey Name: Browse Basin 2014 Marine Survey (GA0345/TAN1411) - Vessel Name: RV Tangaroa - AUV Type: Hugin - AUV Name: Echo Surveyor V - Institution: Geoscience Australia - Country: Australia - Vessel Operator: NIWA - AUV Operator: FUGRO - Multibeam system: Kongsberg EM2000 - Year of installation: Unknown - Nominal sonar frequency: 200 kHz - Number of beams: xxx beams - Beamwidth across track: Unknown - Beamwidth along track: Unknown - Pulse length: variable - Selectable depth range: Unknown - Start Date: 09/10/2014 - End Date: 11/11/2014 - Start Port: Darwin - End Port: Darwin - Number of grids: 5 - Vertical Datum: MSL - Horizontal Datum: WGS84-51S - Survey leaders: Chris Nicholson - Data acquired and processed by: FUGRO, Justy Siwabessy - Grids resolution: 1m - This dataset consist of the following files: + Georeferenced colour tif image in 1m resolution, shaded with sun azimuth 45 degrees + ESRI ascii (*.asc) in 1m resolution + ASCII xyz (*.txt) in 1m resolution + ESRI Raster in 1m resolution + KMZ file
Extent
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/1c72caf2-fed6-9517-e053-12a3070aa240
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Dataset
- Name
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dataset
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/83919
- Date info (Revision)
- 2018-04-22T08:34:17
- Date info (Creation)
- 2015-08-04T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551