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Sediment Data for Tasman Peninsula, Tasmania

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


Dataset citation

ANZLIC unique identifier: ANZCW0703016225

Title: Sediment Data for Tasman Peninsula, Tasmania


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

Abstract:

Geoscience Australia carried out marine surveys in south-east Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island. Seabed sediment samples were collected by TAFI in August 2010 in a targeted area to the east of Tasman Peninsula. Samples were collected at 25 stations using a Van Veen grab, from which a 50 - 100 g sub-sample was taken and submitted to Geoscience Australia for analysis.

ANZLIC search words:

  • MARINE Surveys
  • MARINE Geology and Geophysics

Spatial domain:

locality map

Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia

Geographic extent polygon: 147.97 -43.08, 148.05 -43.08, 148.05 -43.13, 147.97 -43.13, 147.97 -43.08,

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

Geographic bounding box:
North bounding latitude: -43.08 °
South bounding latitude: -43.13 °
East bounding longitude: 148.05 °
West bounding longitude: 147.97 °

Data currency

Beginning date: 2010-08-23

Ending date: 2010-08-23


Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - xls Microsoft Excel spreadsheet Excel GDA94
Available format type:
DIGITAL - xls Microsoft Excel spreadsheet Excel GDA94

Access constraints:

This material is released under the Creative Commons Attribution 3.0 Australia Licence.

Free Data Download

Data quality

Lineage:

In the laboratory, samples were used for grain size analysis and measurement of carbonate content on separate splits. Grain size measurement was undertaken by wet sieving to determine mud (less than 63 microns), sand (63-2000 microns) and gravel (greater than2000 microns) fractions as percentage of dry weight. A separate sub-sample (~1g) was used for laser diffraction measurement of the mud and sand fractions using a Malvern Mastersizer 2000, with results expressed as percentage of the total particle volume based on an average of three measurements on each sample. Summary statistics include arithmetic mean, mode, standard deviation, skewness and kurtosis. Carbonate content was measured on the bulk fraction only by acid digestion and measurement of resultant pressure, following Muller and Gastner (1979). Sediment data for Tasman Peninsula are a first generation product derived from the physical samples. No transformation of the data has been undertaken.

Positional accuracy:

Approximately 5 m, based on uncertainty of the grab position when lowered from the vessel.

Attribute accuracy:

The accuracy of laser derived measurements are checked by glass bead verification, whereby glass bead standards are analysed and verified against specification details for that batch of beads. Not all samples contained sufficient mud for carbonate analysis.

Logical Consistency:

All samples in this data set were sampled and processed using a standard operating procedure, details of which can be obtained from Geoscience Australia upon request.

Completeness:

completed


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

Metadata information

Metadata date: 2013-03-08


Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703016225.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703016225.xml

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Authors:Radke, L.
SPATIAL INFORMATION FOR THE NATION