Product catalogue
Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - High Resolution Backscatter grids
Geoscience Australia undertook a marine survey of the Vlaming Sub-basin in March and April 2012 to provide seabed and shallow geological information to support an assessment of the CO2 storage potential of this sedimentary basin. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The Vlaming Sub-basin is located offshore from Perth, Western Australia, and was previously identified by the Carbon Storage Taskforce (2009) as potentially highly suitable for CO2 storage. The principal aim of the Vlaming Sub-basin marine survey (GA survey number GA334) was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Vlaming Sub-basin that may extend up to the seabed. The survey also mapped seabed habitats and biota in the areas of interest to provide information on communities and biophysical features that may be associated with seepage. This research addresses key questions on the potential for containment of CO2 in the Early Cretaceous Gage Sandstone (the basin's proposed CO2 storage unit) and the regional integrity of the South Perth Shale (the seal unit that overlies the Gage Sandstone). This dataset comprises high resolution backscatter grids.
Simple
Identification info
- Date (Publication)
- 2013-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/82975
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/54EA963522229
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Siwabessy, J.
1
- Point of contact
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Role Organisation / Individual Name Details Custodian EGD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
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- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2012-03-17 2012-04-20
- 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
- Keywords
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Marine Data
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Backscatter Grid
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- Theme
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backscatter
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- Theme
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continental shelf
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- Theme
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environmental
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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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marine
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- Keywords
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WA
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Environmental Sciences
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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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Related Product
Link to Underwater video footage from the Vlaming Sub-basin (GA334)
- OnLine resource
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Related Product
Link to Seabed Environments and Shallow Geology of the Vlaming Sub-Basin, Western Australia - Supporting Investigation for Geological Storage of CO2 GA334 Marine Environmental Survey Post-Survey Report
- OnLine resource
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Related Product
Link to GA0334 Vlaming sub-basin Species identification of worms from grab
- OnLine resource
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Related Product
Link to Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - High Resolution Bathymetry grids
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Chlorin analyses of seabed sediments.
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Inorganic elements of seabed sediments.
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Bulk organic carbon and nitrogen isotopes and concentrations in seabed sediments.
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Sediment oxygen demand of seabed sediments.
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Chlorophyll a, b and c of seabed sediments.
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: %carbonate and specific surface area of seabed sediments.
- OnLine resource
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Related Product
Link to Seabed Environments and shallow sub-surface geology of the Vlaming Sub-basin, offshore Perth Basin: Summary results from marine survey GA0334
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Grain size and carbonate concentrations of seabed sediment.
- OnLine resource
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Related Product
Link to An Integrated Study of the CO2 Storage Potential in the Offshore Vlaming Sub-Basin: Results of the study undertaken as part of the NCIP program
- OnLine resource
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Related Product
Link to Ecology / Infaunal morphospecies identifications from the Vlaming Sub-basin (GA0334)
- OnLine resource
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Related Product
Link to Predicted seabed gravel, mud and sand content in the Vlaming sub-basin in the Australian continental EEZ 2013
- OnLine resource
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Related Product
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia - interpreted geomorphic map.
- OnLine resource
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Related Product
Link to Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - Sidescan grids
- OnLine resource
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Related Product
Link to Processed sub-bottom profiler data - Seabed environments and shallow geology of the Vlaming Sub-basin, offshore Perth Basin (GA0334)
- OnLine resource
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Related Product
Link to Data and information on seabed environments of the Vlaming sub-basin, Western Australia.
- OnLine resource
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File download
Download the data (tif)
- OnLine resource
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File download
Download the data (XYZ ascii)
- OnLine resource
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File download
Download the metadata (pdf)
- OnLine resource
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File download
Download the data (KML)
- OnLine resource
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File download
Download the data (ArcGIS-grid)
- OnLine resource
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File download
Download the data (ESRI ascii)
Resource lineage
- Statement
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The Vlaming Sub-Basin survey, GA-0334 GP1373 was acquired by Geoscience Australia onboard the RV Southern Supporter from the 17th of March to the 20th of April 2012.
The GA representative onboard was Mr. George Bernardel.
This dataset was acquired and processed onboard by Fugro and further reprocessing of the data was conducted in the office by Cameron Buchanan and by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.
The naming of the raw bathymetry data had to be changed to show the date, time and vessel.
Then the timing of the raw and the processed data needed to matched as the raw and processed bathymetry data timing did not match.
Then the navigation for different files/days were missing and needed to be loaded and merged with the rest of the dataset.
1. First a vessel configuration file was created where the co-ordinates of the motion sensor and DGPS antenna and patch test offsets were recorded.
2. A new project was then created and the vessel configuration file was attached to the project file.
3. The raw swath sonar data, in raw.all format, for each line was then imported into the project and the vessel information assigned to the data.
4. The motion sensor, DGPS and heading data were then cleaned using a filter that averaged adjacent data to remove artifacts.
5. Different sound velocity profiles data for each block were attached to the corresponding raw swath sonar data files to correct the depths for changes in the speed of sound through the water column.
6. Then a new blank field area was defined that specified the geographic area of study and the co-ordinate system used. The co-ordinates for the study areas were WGS84 UTM-50S.
7. The data was cleaned by applying several filters that removed any remaining spikes in the bathymetry data using user defined threshold values. A visual inspection of the data for each line was then undertaken where artifacts and noisy data not removed by the filtering process were removed manually using Swath and subset editors modules of the Caris HIPS/SIPS software.
8. All the data for each bathymetric, motion sensor, DGPS, heading, tide and sound velocity profile data were merged to produce the final processed data file. A weighted grid of the processed data was then created for each Block.
In GA the tide was applied to the grid to correct for tidal variations and velocity corrections were performed to correct for different artifacts and mismatches.
9. The processed data was finally exported as grids soundings or false colored images for presentation and reporting and as final processed data in in ASCII XYZ as well as geotif formats of 50m resolution.
10-Using CARIS Base editor 4.0 the grids were exported as ESRI ASCII grid, then imported into ARC catalogue/info to create a raster file for the entire survey.
- Hierarchy level
- Dataset
- Description
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The multibeam bathymetry was acquired by the following survey:
- Processing software: CARIS HIPS & SIPS v7.1 SP2
- Survey Name: GA-0334 Vlaming Sub-Basin Marine Environmental Survey, GP1373
- Vessel Name: RV Southern Supporter
- Institution: Geoscience Australia
- Country: Australia
- Operator: FUGRO
- Multibeam system: Reson SeaBat 7101 ER
- Year of installation: Unknown
- Nominal sonar frequency: 240 kHz
- Number of beams: 511 beams
- Beamwidth across track: 1.8 degree
- Beamwidth along track: 1.5 degree
- Pulse length: variable
- Selectable depth range: 0.5m - 300-500m
- Vessel speed: 7 - 8 knots
- Start Date: 17/03/2012
- End Date: 20/04/2012
- Start Port: Fremantle
- End Port: Fremantle
- Number of grids: 2 (Northern Block & Southern Block)
- Total surface coverage: 475.46 Km2
- Vertical Datum: MSL
- Horizontal Datum: WGS84-50S
- Survey leaders: George Bernardel
- Data acquired and processed by: Fugro, Justy Siwabessy
- Grids resolution: 2m
- This dataset consist of the following files:
+ Georeferenced colour tif image in 2m resolution, shaded with sun azimuth 45 degrees
+ ESRI ascii (*.asc) in 2m resolution
+ ASCII xyz (*.txt) in 2m resolution
+ ESRI Raster in 2m 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/0e257376-0685-d0f4-e053-10a3070acedc
- 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/82975
- Date info (Revision)
- 2018-04-20T06:05:57
- Date info (Creation)
- 2015-02-03T00:00:00
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