Product catalogue
Shipboard Multibeam Backscatter Grids - Caswell Sub-basin, Browse Basin Marine Survey (GA0345/GA0346/TAN1411)
Geoscience Australia (GA) conducted a marine survey (GA0345/GA0346/TAN1411) of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014 to acquire seabed and shallow geological information to support an assessment of the CO2 storage potential of the basin. The survey, undertaken as part of the Department of Industry and Science's National CO2 Infrastructure Plan (NCIP), aimed to identify and characterise indicators of natural hydrocarbon or fluid seepage that may indicate compromised seal integrity in the region.
The survey was conducted in three legs aboard the New Zealand research vessel RV Tangaroa, and included scientists and technical staff from GA, the NZ National Institute of Water and Atmospheric Research Ltd. (NIWA) and Fugro Survey Pty Ltd. Shipboard data (survey ID GA0345) collected included multibeam sonar bathymetry and backscatter over 12 areas (A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1, M1) totalling 455 km2 in water depths ranging from 90 - 430 m, and 611 km of sub-bottom profile lines. Seabed samples were collected from 48 stations and included 99 Smith-McIntyre grabs and 41 piston cores. An Autonomous Underwater Vehicle (AUV) (survey ID GA0346) collected higher-resolution multibeam sonar bathymetry and backscatter data, totalling 7.7 km2, along with 71 line km of side scan sonar, underwater camera and sub-bottom profile data. Twenty two Remotely Operated Vehicle (ROV) missions collected 31 hours of underwater video, 657 still images, eight grabs and one core.
This catalogue entry refers to the shipboard multibeam backscatter grids produced for the twelve survey areas (Areas A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1b and M1; 455 km2).
Simple
Identification info
- Date (Creation)
- 2015-01-01T00:00:00
- Date (Publication)
- 2016-06-06T14:00:00
- Date (Revision)
- 2018-06-19T06:11:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/83918
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/5b289aa26deb5
- Cited responsible party
-
Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Siwabessy, J.
1
- Name
-
Record
- Point of contact
-
Role Organisation / Individual Name Details Custodian RD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
-
- Oceans
Extent
))
- 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
-
-
Exclusive Economic Zone
-
- Theme
-
-
backscatter
-
- Theme
-
-
marine environmental baselines
-
- Theme
-
-
marine survey
-
- Theme
-
-
geological storage of CO2
-
- Keywords
-
-
Australian EEZ
-
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
-
Marine Geoscience
-
- Keywords
-
-
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 data (esri ascii)
Download the data (esri ascii)
- OnLine resource
-
Download the data (esri grid)
Download the data (esri grid)
- OnLine resource
-
Download the data (geotif)
Download the data (geotif)
- OnLine resource
-
Download the data (kml)
Download the data (kml)
- OnLine resource
-
Download the metadata (pdf)
Download the metadata (pdf)
- OnLine resource
-
Download the data (xyz ascii)
Download the data (xyz ascii)
- OnLine resource
-
Caswell Sub-basin - Browse Basin CO2 data package
Caswell Sub-basin - Browse Basin CO2 data package
Resource lineage
- Statement
-
The backscatter data were processed using CMST-GA MB Process v12.05.07.0 (x64) toolbox software. The fully processed backscatter strengths were corrected for transmission loss and insonification area. The process within the toolbox also involved removal of the system transmission loss, removal of the system model, calculation of the incidence angle and removal of the angular dependence. The grid values are basically the average values of the processed backscatter point data within each grid cell of predefined size, normalised to the backscatter strength at an angle of 25 degrees.
- Hierarchy level
- Dataset
- Description
-
Datasets collected and in WGS84 UTM 51 S, extent indicator for the metadata record however is in GDA94 to be consistent with other national scale metadata records. The multibeam bathymetry was acquired by the following survey: - Processing software: CARIS HIPS & SIPS v7.1 SP2 - Survey Name: Browse Basin 2014 Marine Survey (GA0345/TAN1411) - Vessel Name: RV Tangaroa - Institution: Geoscience Australia - Country: Australia - Operator: NIWA - Multibeam system: Kongsberg EM302 - Year of installation: Unknown - Nominal sonar frequency: 30 kHz - Number of beams: 288 beams - Max number of soundings: 432 - Beamwidth across track: Unknown - Beamwidth along track: Unknown - Pulse length: variable - Selectable depth range: Unknown - Vessel speed: 7 - 8 knots - Start Date: 09/10/2014 - End Date: 11/11/2014 - Start Port: Darwin - End Port: Darwin - Number of grids: 12 - Total surface coverage: 455 Km2 - Vertical Datum: MSL - Horizontal Datum: WGS84-51S - Survey leaders: Chris Nicholson - Data acquired and processed by: NIWA, Justy Siwabessy - Grids resolution: 5m - This dataset consist of the following files: + Georeferenced colour tif image in 5m resolution, shaded with sun azimuth 45 degrees + ESRI ascii (*.asc) in 5m resolution + ASCII xyz (*.txt) in 5m resolution + ESRI Raster in 5m resolution + KMZ file
Extent
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/1c72caf2-fed5-9517-e053-12a3070aa240
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Dataset
- Name
-
dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/83918
- Date info (Revision)
- 2018-04-22T08:51:04
- Date info (Creation)
- 2015-08-04T00:00:00
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