Leveque Shelf Browse Basin Marine Survey (GA-0340/SOL5754) (NCIP Program) - High Resolution Multibeam Acoustic Backscatter Grids

This resource contains backscatter data for the the Leveque Shelf, a sub-basin of the Browse Basin, in May 2013 on RV Solander (survey GA0340/SOL5754). The survey used a Kongsberg EM3002 300 kHz multibeam sonar system mounted in single head configuration to map six areas, covering a combined area of 1070 square kilometres. Data are gridded to 2 m spatial resolution. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir)

Simple

Identification info

Date (Publication)
2014-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/79033

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/54EA691B457D6

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Geoscience Australia

 Canberra
Author

Siwabessy, J.

 1
Author

Picard, K.

 2
Point of contact
Role Organisation / Individual Name Details
Owner

Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Siwabessy, J.

 Place and Communities Internal Contact
Topic category
  • Oceans

Extent

N
S
E
W


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

Keywords

  • Marine Data

  • Backscatter Grid

Theme

  • backscatter

Theme

  • multibeam

Theme

  • marine environmental baselines

Theme

  • marine survey

Theme

  • seabed

Theme

  • marine

Keywords

  • AU-WA

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

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

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

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

OnLine resource

Download the data (tif)

Download the data (tif)

OnLine resource

Download the data (ArcGIS-grid)

Download the data (ArcGIS-grid)

OnLine resource

Download the data (kml)

Download the data (kml)

OnLine resource

Download the data (XYZ ascii)

Download the data (XYZ ascii)

OnLine resource

Download the data (ESRI ascii)

Download the data (ESRI ascii)

OnLine resource

Download the metadata (pdf)

Download the metadata (pdf)

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

Processing software: CMST-GA MB Process v12.05.07.0 (x64)

Survey Name: Oceanic Shoals Marine Surveys GA-0340/SOL5754

Vessel: RV Solander

Country: Australia

Operator: AIMS

Bathymetric system used: Kongsberg EM3002

Year of installation: 2012

Nominal sonar frequency: 300 kHz

Number of beams: 160 beams

Beamwidth across track: 1.5 degrees

Beamwidth along track : 1.5 degrees

Pulse length: Variable, operator selectable

Depth range: 45 - 105 m

Vessel speed: 8 - 10 knots

Start date of survey: 01 May 2012

End date of survey: 31 May 2012

Institution: Geoscience Australia

Start port: Broome

End port: Broome

Survey leaders: Riko Hashimoto, Tanya Whiteway

Data acquired and processed by: Justy Siwabessy, Kim Picard, Ian Atkinson, Steve Hodgkin

Grids resolution: 2m

Number of grids: 6

This dataset consists of the following files:

- Georeferenced colour tif images in 2m resolution, shaded with sun azimuth 45 degrees

- ASCII xyz (*.txt) grids in 2m resolution in UTM52S WGS84

- ESRI ascii (*.asc) grids in 2m resolution in UTM52S WGS84

- ESRI Rasters in 2m resolution

- KMZ files

Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/f22bc521-54b4-5dbf-e044-00144fdd4fa6

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

Siwabessy, J.

 Place and Communities Internal Contact

Type of resource

Resource scope
Dataset
Name

dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/79033

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f22bc521-54b4-5dbf-e044-00144fdd4fa6

Date info (Revision)
2018-04-22T08:30:22
Date info (Creation)
2014-02-12T00:00:00

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

 
 

Spatial extent

N
S
E
W


Keywords

backscatter marine marine environmental baselines marine survey multibeam seabed

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Associated resources

Not available