Petrel Sub-basin Marine Survey (GA-0335 / SOL5463) (NLECI Program) - Seabed Geochemistry / TOC, TN and carbon and nitrogen isotopes

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

[back to top]

Dataset citation

ANZLIC unique identifier: ANZCW0703016679

Title: Petrel Sub-basin Marine Survey (GA-0335 / SOL5463) (NLECI Program) - Seabed Geochemistry / TOC, TN and carbon and nitrogen isotopes

[back to top]

Custodian

Custodian: Geoscience Australia

Jurisdiction: Northern Territory

[back to top]

The Petrel Sub-basin Marine Environmental Survey GA-0335, (SOL5463) was undertaken using the RV Solander during May 2012 as part of the Commonwealth Government's National Low Emission Coal Initiative (NLECI). The survey was undertaken as a collaboration between the Australian Institute of Marine Science (AIMS) and GA. The purpose was to acquire geophysical and biophysical data on shallow (less then 100m water depth) seabed environments within two targeted areas in the Petrel Sub-basin to support investigation for CO2 storage potential in these areas. This 10 sample data-set comprises total organic carbon (%TOC), total nitrogen (%TN) and carbon and nitrogen isotopes from surface seabed sediments (~0-2 cm) in the Timor Sea.

ANZLIC search words:

MARINE Surveys

Spatial domain:

locality map

Geographic extent name: TIMOR SEA - TIMOR SEA - Ocean and Sea Regions - Australia

Geographic extent name: TIMOR SEA - TIMOR SEA - Drainage Divisions and Major River Basins - Australia

Geographic extent polygon: 128.95 -12.64, 128.8 -12.64, 128.8 -12.84, 128.95 -12.84, 128.95 -12.64,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:: North bounding latitude: -12.64 °; South bounding latitude: -12.84 °; East bounding longitude: 128.8 °; West bounding longitude: 128.95 °

[back to top]

Data currency

Beginning date: 2012-05-03

Ending date: 2012-05-31

[back to top]

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known

[back to top]

Access

Stored data format:: DIGITAL - xls Microsoft Excel spreadsheet Excel Geographic WGS84

Available format type:: DIGITAL - xls Microsoft Excel spreadsheet Excel Geographic WGS84

Access constraints:

This material is released under the Creative Commons Attribution 3.0

Free Data Download

[back to top]

Data quality

Lineage:

Bottom sediments were collected using a Smith McIntyre grab. Surface sediments (~0-2 cm) within the grab were spooned into falcon vials and the porewaters were removed by centrifugation. The samples were then frozen for transport to the laboratories at Geoscience Australia where they were freeze-dried, ground in a tungsten carbide mill and decarbonated. The decarbonated powders were sent to Environmental Isotopes Pty Ltd (Sydney) for isotopic analysis by mass spectrometry. Samples were back-corrected to account for the carbonate removal.

Positional accuracy:

Inherited from raw data in which C-NAV system was used to provide geographical position with a manufacturer accuracy of 10 cm RMS. Inherited from raw data in which an Applanix system was used to provide roll and pitch, and heave with manufacturer accuracies for roll and pitch are 0.05 deg. RMS, and manufacturer accuracy for heave is 5 cm. However there are spatial offsets between the C-NAV system and the grab that were not measured but are presumed to be in the order of meters..

Attribute accuracy:

Good. Errors are estimated using laboratory standards run regularly as unknowns. These micro-analytical standards are used to calibrate the instrument for measurement of concentration of C and N but have proven to be useful material for monitoring errors. These micro analytical standards give standards deviations of better than ?0.15 for C and N isotope values.

Logical Consistency:

Unknown

Completeness:

Complete

[back to top]

Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address: sales@ga.gov.au

[back to top]

Metadata information

Metadata date: 2013-03-08

[back to top]

Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703016679.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703016679.xml

Thanks to M. Carey for undertaking the field sampling, and to the Master and crew of the RV Solander and scientific staff at the Australian Institute of Marine Science and Geoscience Australia (A. G. Carroll, D.C. Jorgensen, J. Siwabessy, T. Nicholas, L. Jones, M. Sexton, I. Atkinson, S. Hodgkin, F. Howard, M. Stowar) for their support in conducting the survey. Thanks also to Janice Trafford, Matt Carey, Jessica Byass, Ian Long, Tony Watson, Liz Webber and Bill Pappas for providing the laboratory analyses.

Authors:Radke, L. Carey, M.

[back to top]