Product catalogue
TOPAS Sea Trials Survey (GA-2361) - Bathymetry grids
The TOPAS Sea Trials survey GA-2361, was acquired by Geoscience Australia after the installation of the new Sub bottom profiler (TOPAS) onboard the RV Southern Surveyor during the 9th and the 10th of December 2004. The survey loacation was offshore Brisbane. The aim of the survey was to test the new sub bottom profiler installed onboard. The bathymetry grids consists of 5,10 and 40 resolution projected in Easting and Northing WGS84, UTM56S.<p><p>This dataset is not to be used for navigational purposes.
Simple
Identification info
- Date (Publication)
- 2013-01-01T00:00:00
- Date (Revision)
- 2019-04-08T05:58:52
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/75662
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Spinoccia, M.
1
- Point of contact
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Role Organisation / Individual Name Details Custodian ED
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2004-12-09 2004-12-10
- 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
- Australian and New Zealand Standard Research Classification (ANZSRC)
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Earth Sciences
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- {1}
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HVC_144641
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- Project
-
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AusSeabed
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- {1}
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Marine Data Bathymetry Grid
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- Theme
-
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bathymetry
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- Theme
-
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continental shelf
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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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- {1}
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AU-QLD
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- {1}
-
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Published_External
-
Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Complete Download
Complete Download
- Distribution format
-
- OnLine resource
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ASCII XYZ
ASCII XYZ
- OnLine resource
-
ESRI Raster Grids
ESRI Raster Grids
- OnLine resource
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CARIS CSAR
CARIS CSAR
- OnLine resource
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Offshore Brisbane (Topas Sea Trials) 2004 5m-40m (zip) [3.5 MB]
Offshore Brisbane (Topas Sea Trials) 2004 5m-40m (zip) [3.5 MB]
- Distribution format
-
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zip
- File decompression technique
-
unzip
-
Resource lineage
- Statement
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The multibeam bathymetry was acquired by the following survey:
- Survey Name: GA-2361 TOPAS Sea Trials
- Vessel Name: RV Southern Surveyor
- Institution: Geoscience Australia
- Country: Australia
- Operator: CSIRO
- Multibeam system: Kongsberg EM300
- Year of installation: 2004
- Nominal sonar frequency: 30 kHz
- Number of beams: 135 beams
- Beamwidth across track: 1 degree
- Beamwidth alon track: 1 degree
- Pulse length: variable
- Selectable depth range: 10m - 5000m
- Vessel speed: 7 - 8 knots
- Start Date: 09/12/2005
- End Date: 10/12/2005
- Start Port: Brisbane
- End Port: Brisbane
The TOPAS Sea Trials survey, GA-2361, was acquired by Geoscience Australia onboard the RV Southern Surveyor from the 9th of December to the 10th of December 2004.
The Chief scientist onboard was Mr. Fred Kroh.
This dataset was acquired and processed onboard by Cameron Buchanan and further processing was conducted in the office by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.
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-56S.
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 5,10 and 40m 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
-
Geoscience Australia
Extent
- Hierarchy level
- Collection hardware
Platform
Identifier
- Code
- Southern Surveyor
Instrument
Identifier
- Code
- EM300
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/d87bbd30-583b-4402-e044-00144fdd4fa6
- 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
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/75662
- Date info (Revision)
- 2018-04-20T06:10:54
- Date info (Creation)
- 2013-03-22T00:00:00
Metadata standard
- Title
-
AU/NZS ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551