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GSWA Complete South Yilgarn Elevation Merged Grid Geodetic

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: ANZCW0703010581

Title: GSWA Complete South Yilgarn Elevation Merged Grid Geodetic


Custodian

Custodian: Geoscience Australia / OEMD

Jurisdiction: Western Australia


Description

Abstract:

GA acts as a portal for all State geophysical datasets with the exception of South Australia. The data is located in the Geophysical Archive Data Delivery System (GADDS) and also mirrored on the externally located GA website. An internal link to the data is:

\\Marl\export\jet\3\data (GA specific data is located here and State data is further segregated into folders).

OEMD adds new survey datasets to GADDS as they become available. Each State Government requires a different license statement (refer to Licence Details).

The height component of these surveys is acquired using radar altimetry. Errors inherent to this process are included in the attached .pdf document http://www.ga.gov.au/about/corporate/ga_authors/dem_errors.jsp#report or http://www.ga.gov.au/image_cache/GA2080.pdf

ANZLIC search words:

  • LAND Topography Models

Spatial domain:

locality map

Geographic extent polygon: 117.577 -29.978, 121.633 -29.978, 121.633 -34.792, 117.577 -34.792, 117.577 -29.978,

Geographic bounding box:
North bounding latitude: -29.978 °
South bounding latitude: -34.792 °
East bounding longitude: 121.633 °
West bounding longitude: 117.577 °

Data currency

Beginning date: 1983-01-01

Ending date: Not Known


Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - ascii ASCII text Geographic GDA94
DIGITAL - ers ER Mapper raster dataset ER Mapper Geographic GDA94
Available format type:
DIGITAL - ers ER Mapper raster dataset ER Mapper Geographic GDA94
DIGITAL - ascii ASCII text Geographic GDA94

Access constraints:

The data is subject to Copyright. Data files may be downloaded from Geoscience Australia's website (http://www.geoscience.gov.au/bin/mapserv36?map=/public/http/www/geoportal/gadds/gadds.map&mode=browse) or internally on \\Marl\export\jet\3\data. A licence agreement is required. The licence agreement will be a State-based or a GA-based agreement.

Free Data Download

Data quality

Lineage:

The height component of these surveys is acquired using radar altimetry and GPS information. Errors inherent to this process are included in the attached .pdf document http://www.ga.gov.au/about/corporate/ga_authors/dem_errors.jsp#report or http://www.ga.gov.au/image_cache/GA2080.pdf

Positional accuracy:

Horizontal: 1-2m, Vertical: 5m (Refer to http://www.ga.gov.au/about/corporate/ga_authors/dem_errors.jsp#report or http://www.ga.gov.au/image_cache/GA2080.pdf)

Attribute accuracy:

For this particular GADDS elevation product, attribute accuracy is a measure of the degree to which the attribute values of features agree with the desiganted reference material. There is a 99% confidence level in the GA and State elevation datasets.

Logical Consistency:

Depending on their supply date, a range of spatial and attribute checks were applied to selected supplied dataset to ensure that they contain accurate attribute values.

All elevation datsets should be later than 1993 when reliable and continuous GPS became available.

Elevation data acquired by (and sourced from) State agencies between 1993 and 2003-4 have unknown QA, reliability and consistency checks.

Elevation data acquired by GA (on behalf of State agencies) post 2003-4 have had a number of QA and reliability checks performed in addition to the supply of histogram plots.

Checks include data comparison against:

*9 Second V2.0 DEM,

*Benchmarks,

*SRTM DEM and

*Spot Heights

Benchmarks and Spot Height checks generally have good Z accuracy but may have only moderate X and Y accuracy.

Completeness:

All instances of a feature and its attribute values that appear on the source material are captured unless otherwise indicated in the selection criteria for that feature.


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/ANZCW0703010581.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703010581.xml

Refer to GADDS survey 1065_1066_1067

Authors:Keating, W.D. Daly, J.
SPATIAL INFORMATION FOR THE NATION