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Earthquake Hazard Risk Contour Map (National Geoscience Dataset)

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: ANZCW0703002393

Title: Earthquake Hazard Risk Contour Map (National Geoscience Dataset)


Custodian: Geoscience Australia

Jurisdiction: Australia



This dataset is the Earthquake Hazard Risk Contour Map for Australia based on earthquake measurements taken from the Geoscience Australia Earthquake Database. It shows the acceleration coefficient (a) 10 percent chance of being exceeded in the next 50 years. Thus a value of 0.05 as an example means that in any 50 year period, there is a 90% chance that the peak ground acceleration will not exceed 0.05. Where peak ground acceleration is a dimensionless coefficient of acceleration that is used by civil engineers to estimate forces on structures. High values of this calculation represent higher risk areas of earthquake occurrence.

ANZLIC search words:

  • HAZARDS Earthquake

Spatial domain:

locality map

Geographic extent name: AUSTRALIA INCLUDING EXTERNAL TERRITORIES - AUSAAT - Australia - Australia

Geographic extent polygon: 113 -10, 154 -10, 154 -43, 113 -43, 113 -10,

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

Geographic bounding box:
North bounding latitude: -10 °
South bounding latitude: -43 °
East bounding longitude: 154 °
West bounding longitude: 113 °

Data currency

Beginning date: 1990-01-01

Ending date: 1998-09-01

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Stored data format:
DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic WGS84
Available format type:
DIGITAL - shp ArcView shape file ArcView Geographic WGS84
DIGITAL - dat Data file MapInfo Geographic WGS84
DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic WGS84

Access constraints:

Free to download

Free Data Download

Data quality


This is an interpretive data set based on data derived from GA's World Earthquake Database. Using earthquake locations and measurements from the database, contours reflecting potential earthquake hazard were digitised in Arcinfo for the Australian mainland. In 1997 the 1:1 000 000 scale GA approved coastline was added to the data set and items feature and UFI have been added to complete the quality assurance.

Positional accuracy:

Nominal Scale 1:1,000,000

Attribute accuracy:


Logical Consistency:

A geoscientist visually inspected the finished dataset to make sure the attributes were accurate and the data were consistent spatially with current scientific information. Tests are also carried out on these data for data completeness, correct spatial representation, attribute accuracy, logical consistency and correctness, and where appropriate for compliance with Geoscience Australia's GIS data dictionary.


The dataset coverage is complete for the whole of continental Australia.

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:

Metadata information

Metadata date: 2013-03-08

Additional metadata

Metadata reference XHTML:

Metadata reference XML:

polygon items:-

feature feature type EQRISK_UNIT

ufi unique numeric identifier

value values of the acceleration coefficient (a) 10% chance of

being exceeded in 50 years

riskval 3 band classification of the above values

Authors:McCue, K. Kilgour, B.