Product catalogue
Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (FK201122/20200016S)
This resource includes bathymetry data acquired during the Southern Depths of the Great Barrier Reef survey using Kongsberg EM302 and EM710 multibeam sonar systems.
The Southern Great Barrier Reef Shelf Bathymetry survey (FK201122/GA4867); also known as Ice Age Geology of the Great Barrier Reef survey; was led by Queensland University of Technology aboard the Schmidt Ocean Institute's research vessel Falkor from the 22nd of November to the 21st of December 2020.
The primary objective of the expedition was to explore ancient undersea features that formed during the last Ice Age, when sea level was around 125 m lower than it is today. While once an exposed part of the Australian coast, these shelf areas were submerged as Earth’s glaciers and ice sheets melted and sea level rose, flooding Australia’s continental shelf.
Another objective was to find the southern extent of an older limestone platform that may represent the approximately 20 million-year-old base upon which the present Great Barrier Reef has grown.
This V1 dataset contains seven 2 to 64m resolution 32-bit floating point geotiff files of the Southern Great Barrier Reef Shelf Bathymetry survey area, derived from the processed EM302 and EM710 bathymetry data, using CARIS HIPS and SIPS software.
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 (Publication)
- 2020-09-22T22:44:49
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/145133
- Citation identifier
- Digital Object Identifier/https://dx.doi.org/10.26186/145133
- Cited responsible party
-
Role Organisation / Individual Name Details Author Mcneil, M.
Place and Communities Internal Contact Publisher Commonwealth of Australia (Geoscience Australia)
Voice
- Purpose
-
Make the bathymetry data available to the public
- Status
- On going
- Point of contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Schmidt Ocean Institute
mailto:deborah.s@soi-team.org External Contact Custodian Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Spinoccia, M.
Place and Communities Internal Contact Principal investigator Mcneil, M.
Place and Communities Internal Contact Processor Spinoccia, M.
Place and Communities Internal Contact Resource provider Place and Communities Division
External Contact
- Spatial representation type
Spatial resolution
- Level of detail
-
2 to 64m
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2020-11-22 2020-12-21
- Maintenance and update frequency
- As needed
Resource format
- Title
-
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.ANZRC Fields of Research.rdf
-
-
EARTH SCIENCES
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- {1}
-
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HVC_144641
-
- Theme
-
-
Marine
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- {1}
-
-
Bathymetry
-
- Instrument
-
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Multibeam
-
- Product
-
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Bathymetric grids
-
- Project
-
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AusSeabed
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- {1}
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Published_Internal
-
- Product
-
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Marine Data
-
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
-
Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (zip) [2 GB]
Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (zip) [2 GB]
- Distribution format
-
-
zip
- File decompression technique
-
unzip
-
- OnLine resource
-
Link to voyage report
Link to voyage report
- Distribution format
-
Resource lineage
- Statement
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<BR>The Chief scientist onboard was Mardi McNeil.
<BR>This dataset was produced using CARIS HIPS/SIPS version 11.3.7
<BR>For any metadata questions, please download the Metadata.txt file located with the dataset.
<BR>
<BR>Processing methodology:
<BR>
<BR>Following the CARIS HIPS/SIPS workflow,
<BR>1. A vessel configuration file was created where the co-ordinates of the motion sensor, DGPS antenna and patch test offsets were recorded.
<BR>2. A new project was created and the vessel configuration file attached to the project file.
<BR>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.
<BR>EGM2008 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
<BR>4. The motion sensor, DGPS and heading data were cleaned using a filter that averaged adjacent data to remove artefacts.
<BR>5. Sound velocity profiles data for each block of data were attached to the corresponding raw swath sonar data files.
<BR>6. A new blank surface area was defined that specified the geographic area of study and the co-ordinate system used.
<BR>7. The data was cleaned by applying several filters that removed any spikes in the data using user defined threshold values.
<BR>8. Data were inspected visually for each line where artifacts and noisy data had not removed by the filtering process.
<BR>9. Remaining spikes were removed manually using the swath and subset editor modules.
<BR>10. All the data, i.e. bathymetric sounding and ancillary data, were merged to produce the final processed data file.
<BR>11. A weighted grid of the processed data was then created.
<BR>12. Independent velocity corrections were performed where velocity artefacts were observed.
<BR>13. The final processed grid was exported as a 32 bit floating point Geotif format at 2, 4, 8, 11, 16, 24 and 64m resolution referenced to egm2008 ~ to mean sea level.
Reference System Information
- Reference system identifier
- EPSG/WGS 84 / UTM zone 56S (EPSG:32756)
- Hierarchy level
- Collection hardware
Platform
Identifier
- Code
- RV Falkor
Instrument
Identifier
- Code
- Kongsberg EM302
Instrument
Identifier
- Code
- Kongsberg EM710
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/f4f26ed2-6a92-4198-aed6-53c53f40185b
- 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.
Place and Communities Internal Contact
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/145133
- 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