From Geoscience Australia
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Development of the 2018 Australian National Seismic Hazard Assessment (NSHA)

Created 17/10/2025

Updated 17/10/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

The 2018 revision of Australia's National Seismic Hazard Assessment (NSHA18) represents a substantial improvement from the 2013 NSHA. In particular, this revision will include a fault source models, an improved and more homogeneous earthquake catalogue, and greater epistemic uncertainty through a call for third party source models. This paper presents updated models of seismicity and ground motion that are currently being developed at Geoscience Australia for the NSHA. We use the OpenQuake software to calculate seismic hazard for Australia and compare with OpenQuake implementations of third-party models and the 2013 NSHA. Weighting of logic tree branches for alternative models are discussed, and how these relate to the fundamental datasets on which they are based. A smoothed seismicity model is developed based on recent seismicity while source models derived from neotectonic fault data consider a much longer time history. Final weightings, including for third party models, will be determined in consultation with members of the Australian seismological community.

Files and APIs

Tags

Additional Info

Field Value
Title Development of the 2018 Australian National Seismic Hazard Assessment (NSHA)
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/18069820-4ec9-4ffa-9dd2-d45b84234d78
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.92,
        -54.75
      ],
      [
        159.11,
        -54.75
      ],
      [
        159.11,
        -9.2402
      ],
      [
        112.92,
        -9.2402
      ],
      [
        112.92,
        -54.75
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Development of the 2018 Australian National Seismic Hazard Assessment (NSHA)". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/development-of-the-2018-australian-national-seismic-hazard-assessment-nsha