Product catalogue
Bathymetry grids of Tasmante Survey (GA-0125 AGSO Leg1 & 2)
The Tasmante bathymetry survey, GA-0125 was acquired by Geoscience Australia onboard the IFREMER N/O L'Atalante from the 12th of February to the 28th of March 1994 using a Simrad EM12 Dual sonar system.
The objectives of the west Tasmanian swath-mapping cruise (Tasmante) are to: determine the structure of the continental margin off west Tasmania, on the South Tasman Rise, and on the adjacent abyssal plain; examine the relationships between lithospheric extension in continental crust, the orientation of the seafloor spreading phases, and the formation of the transform margin along west Tasmania and the South Tasman Rise; map sedimentary patterns and processes to build an understanding of Neogene changes in sedimentation and their relationship to tectonic and climatic.
This dataset contains a 100m resolution 32-bit geotiff of the Tasmante survey, produced from the processed EM12D bathymetry data of the survey area using the CARIS HIPS and SIPS software.
This dataset is published with the permission of the CEO, Geoscience Australia.
Not to be used for navigational purposes.
Simple
Identification info
- Date (Creation)
- 2020-08-20
- Date (Publication)
- 2020-10-07T03:36:31
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/144237
Identifier
- Codespace
-
Digital Obejct Identifier
- Cited responsible party
-
Role Organisation / Individual Name Details Author Spinoccia, M.
- Name
-
Marine Geology
- 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
-
100m
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 1994-02-12 1994-03-28
- 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
-
- {1}
-
-
Marine
-
- {1}
-
-
Multibeam
-
- {1}
-
-
AusSeabed
-
- {1}
-
-
Bathymetry
-
- {1}
-
-
Bathymetric grids
-
- {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
-
Download the Caris data (csar) [302.0 MB]
Download the Caris data (csar) [302.0 MB]
- Distribution format
-
-
csar
-
- OnLine resource
-
South Tasman Rise Bathymetry 1994 100m (zip) [105.6 MB]
South Tasman Rise Bathymetry 1994 100m (zip) [105.6 MB]
- Distribution format
-
-
zip
- File decompression technique
-
unzip
-
Resource lineage
- Statement
-
The Tasmante bathymetry survey, GA-0125 was acquired by Geoscience Australia onboard the N/O L'Atalante from the 12th of February to the 28th of March 1994.
The Chief scientist onboard was Dr. Neville Exon.
This dataset was acquired and processed onboard by the N/O L'Atalante and further processing was conducted in the office by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.
For any metadata questions, please download the Metadata.txt file with the dataset.
Processing:
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 artefacts.
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-59S to UTM54S.
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 artefacts 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 artefacts and mismatches.
9. The processed data was finally exported as grids soundings or false coloured images for presentation and reporting and as final processed data in geotif format at the optimum resolution the data can provide.
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/b1c86ea4-5d56-4837-85e9-045c32e92279
- 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
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/144237
- Date info (Creation)
- 2020-08-20T05:05:19
- Date info (Revision)
- 2020-08-20T05:05:19
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/144237