Browse Basin Leveque Shelf Environmental Survey (GA-0340/ SOL5754) (NCIP Program) - High Resolution Bathymetry Grids

Geoscience Australia undertook a marine survey of the Leveque Shelf (survey number (GA-0340/SOL5754), a sub-basin of the Browse Basin, in May 2013. 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).

Identification info

Date (Publication): 2014-01-01T00:00:00

Citation identifier: Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/79576

Cited responsible party

Role	Organisation / Individual Name	Details
Publisher	Geoscience Australia	Canberra
Author	Spinoccia, M.	1
Author	Yule, C.	PSCD Internal Contact

Point of contact

Role	Organisation / Individual Name	Details
Owner	Commonwealth of Australia (Geoscience Australia)
Custodian	Commonwealth of Australia (Geoscience Australia)	Voice
Point of contact	Spinoccia, M.	Place and Communities Internal Contact

Topic category

Geoscientific information

Extent

Temporal extent

Time period: 2013-05-01 2013-05-30

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

Australian and New Zealand Standard Research Classification (ANZSRC)

Environmental Sciences

{1}

HVC_144641

Project

AusSeabed

{1}

Marine Data Bathymetry Grid

Theme

bathymetry

Theme

marine survey

Theme

environmental

Theme

continental shelf

Theme

marine

{1}

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: Download the data (ArcGIS-grid)

Download the data (ArcGIS-grid)

OnLine resource: Download the data (XYZ ascii)

Download the data (XYZ ascii)

OnLine resource: Download the data (csar)

Download the data (csar)

OnLine resource: Download the data (tif)

Download the data (tif)

OnLine resource: Download the metadata (pdf)

Download the metadata (pdf)

Distribution format

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: Area 1 2013 2m (tif) [177.86 MB]

Area 1 2013 2m (tif) [177.86 MB]

OnLine resource: Area 2 2013 2m (tif) [194.12 MB]

Area 2 2013 2m (tif) [194.12 MB]

OnLine resource: Area 10 2013 2m (tif) [60.4 MB]

Area 10 2013 2m (tif) [60.4 MB]

OnLine resource: Area 3 2013 2m (tif) [225.9 MB]

Area 3 2013 2m (tif) [225.9 MB]

OnLine resource: Area 4 2013 2m (tif) [158.22 MB]

Area 4 2013 2m (tif) [158.22 MB]

OnLine resource: Area 5 2013 2m (tif) [211.73 MB]

Area 5 2013 2m (tif) [211.73 MB]

OnLine resource: Trans 1 2013 2m (tif) [113.52 MB]

Trans 1 2013 2m (tif) [113.52 MB]

OnLine resource: Trans 2 2013 2m (tif) [69.26 MB]

Trans 2 2013 2m (tif) [69.26 MB]

OnLine resource: Download the geotiff [583.06 MB]

Download the geotiff [583.06 MB]

Distribution format

Resource lineage

Statement

The Browse Basin survey, GA-0340 SOL5754 was acquired by Geoscience Australia onboard the RV Solander from the 01st of May to the 30th of May 2013.

The Chief scientist onboard was Dr. Scott Nichol and Dr. Riko Hashimoto.

This dataset was acquired and processed onboard by Justy Siwabessy, Kim Picard and Olivia Wilson and further processing was conducted in the office by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.

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 artifacts.

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-51S.

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 artifacts 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 artifacts and mismatches.

9. The processed data was finally exported as grids soundings or false colored images for presentation and reporting and as final processed data in in ASCII XYZ as well as geotif formats of 2m resolution.

10-Using CARIS Base editor 4.0 the grids were exported as ESRI ASCII grid, then imported into ARC catalogue/info to create a raster file for the entire survey.

11. New version was created using Caris v11.3.16 to reference vertical datum to EGM2008 and horizontal datum to EPSG 4326 and gridded according to AusSeabed banded depth definition (AusSeabed_DepthRanges_2019.txt).

Hierarchy level: Dataset

Description

The multibeam bathymetry was acquired by the following survey:

- Survey Name: GA-0340 Browse Basin Leveque Shelf Environmental Survey, SOL5754

- Vessel Name: RV Solander

- Institution: Geoscience Australia

- Country: Australia

- Operator: AIMS

- Multibeam system: Kongsberg EM3002D

- Year of installation: 2013

- Nominal sonar frequency: 300 kHz

- Number of heads: 1

- Number of beams/head: 160 beams

- Beamwidth across track: 1.5 degree

- Beamwidth along track: 1.5 degree

- Pulse length: variable

- Selectable depth range: 9.8m - 122m

- Vessel speed: 5 - 7 knots

- Start Date: 01/05/2013

- End Date: 30/05/2013

- Start Port: Broome

- End Port: Broome

- Grid resolution: 2 m

- Number of grids: 8

- Total surface coverage: 1,241.81 km2

- Vertical Datum: MSL

- Horizontal Datum: WGS84 UTM-51S

- Use Limitation: This dataset is not to be used for navigational purposes.

Extent

Reference System Information

Reference system identifier: CRS/WGS84 (CRS:84)

Hierarchy level: Collection hardware

Platform

Identifier

Code: RV Solander

Instrument

Identifier

Code: Kongsberg EM3002D (300 kHz)

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/f83bb58d-eb6d-55eb-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

Type of resource

Resource scope: Dataset

Name: dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier: eCatId/79576

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f83bb58d-eb6d-55eb-e044-00144fdd4fa6

Date info (Revision): 2018-04-22T08:22:02

Date info (Creation): 2014-04-30T00:00:00

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

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