Product catalogue
Macquarie Ridge bathymetry survey (RS9401/GA0124)
The RS9401 bathymetry survey, GA0124 was acquired by Geoscience Australia onboard the Australian vessel Rig Seismic from the 12th of January to the 16th of February 1994 using an MR1 (12 kHz) towed sidescan sonar system.
The objectives of the RS9401 bathymetry survey was to collect new data in order to update our understanding of the Macquarie Ridge Complex (MRC), located at the boundary between the Pacific and Australian plates.
The survey acquired Sidescan/ bathymetry, gravity and 96- channel seismic reflection imaging across the morphologic ridge and trench system. Gravity and magnetic data were collected during the entire survey.
This V0 dataset contains three, 128 m resolution 32-bit geotiff of the Macquarie Ridge survey area produced from the processed MR1 bathymetry data.
This dataset is not to be used for navigational purposes.
This dataset is published with the permission of the CEO, Geoscience Australia.
Simple
Identification info
- Date (Creation)
- 2020-10-08
- Date (Publication)
- 2020-09-22T22:44:49
- Date (Revision)
- 2020-11-19T06:04:19
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/144418
Identifier
- Codespace
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Digital Obejct Identifier
- Cited responsible party
-
Role Organisation / Individual Name Details Author Spinoccia, M.
- Purpose
-
bathymetry survey
- Status
- Completed
- Point of contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Spinoccia, M.
Resource provider Place, Space and Communities Division
- Spatial representation type
Spatial resolution
- Level of detail
-
128m
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 1994-01-12 1994-02-16
- Maintenance and update frequency
- As needed
Resource format
- Title
-
Product data repository: Various Formats
- Website
-
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.ANZRC Fields of Research.rdf
-
-
EARTH SCIENCES
-
- {1}
-
-
HVC_144641
-
- Theme
-
-
Marine
-
- {1}
-
-
Bathymetry
-
- Instrument
-
-
Multibeam
-
- Product
-
-
Bathymetric grids
-
- Project
-
-
AusSeabed
-
- {1}
-
-
Marine data
-
- {1}
-
-
Published_External
-
Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
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
-
Macquarie Ridge 01 1994 128m (zip) [29 MB]
Macquarie Ridge 01 1994 128m (zip) [29 MB]
- Distribution format
-
-
zip
- File decompression technique
-
unzip
-
Resource lineage
- Statement
-
While AusSeabed aims to publish data to the level of adherence based on the requirements stated in the AusSeabed multibeam guidelines (version 1), we will also publish interim products (version 0) that are currently available, but have not yet been standardised (version 1).
Users should be aware that V1 products will always supersede V0 products.
This is a V0 product for GA-0124.
The Chief scientist onboard was Dr. Mike Coffin and Dr. Doug Ramsay.
This dataset was produced using CARIS HIPS/SIPS v.7.1.2
The vertical datum is MSL while the horizontal datum is WGS84 UTM-57 and 58S.
For any metadata questions, please download the Metadata.txt file with the dataset.
Processing methodology:
1. A vessel configuration file was created where the co-ordinates of the motion sensor, DGPS antenna and patch test offsets were recorded.
2. A new project was created and the vessel configuration file attached to the project file.
3. The raw swath sonar data files, in raw.all format, for each line was imported into the project and the vessel information assigned to the data.
Ellipsoid vertical reference system is our first preference and when not available or possible to do so, a tidal zone data is the next preference to be applied to the data
4. The motion sensor, DGPS and heading data were cleaned using a filter that averaged adjacent data to remove artefacts.
5. Sound velocity profiles data for each block of the data were attached to the corresponding raw swath sonar data files.
6. A new blank fieldsheet area was defined that specified the geographic area of study and the co-ordinate system used.
7. The data was cleaned by applying several filters that removed any spikes in the data using user defined threshold values.
8. Data were inspected visually for each line where artifacts and noisy data had not removed by the filtering process.
9. Remaining spikes were removed manually using the swath and subset editor modules.
10. All the data, i.e. bathymetric sounding and ancillary data, were merged to produce the final processed data file
11. A weighted grid of the processed data was then created.
12. Independent velocity corrections were performed where velocity artefacts were observed.
13. The final processed grid was exported as a 32 bit Geotif format at 128 m resolution.
Reference System Information
- Reference system identifier
- EPSG/WGS 84 / UTM zone 57S (EPSG:32757)
Reference System Information
- Reference system identifier
- EPSG/WGS 84 / UTM zone 58S (EPSG:32758)
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/0c8b4161-b408-4d47-b91f-3f2d75b6e3af
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Spinoccia, M.
Type of resource
- Resource scope
- Dataset
- Name
-
Macquarie Ridge bathymetry survey (RS9401/GA0124)
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/144418
- Date info (Creation)
- 2020-09-02T06:12:14
- Date info (Revision)
- 2020-09-02T06:12:14
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/144285