Product catalogue
Towards the 2018 National Seismic Hazard Assessment: Draft Design Values as Proposed for the 2018 Standards Australia AS1170.4 Earthquake Design Actions
Geoscience Australia, together with contributors from the wider Australian seismology community, have produced a draft National Seismic Hazard Assessment (NSHA18), recommended for inclusion in the 2018 update of Standards Australia’s Structural design actions, part 4: Earthquake actions in Australia, AS1170.4–2007 (Standards Australia, 2007). This Standard is prepared by Subcommittee BD-006-11, General Design Requirements and Loading on Structures of Standards Australia.
The provisional seismic hazard values presented in this report have been submitted to comply with Standards Australia’s public comment and publication timelines. This report provides a brief overview of provisional mean peak ground acceleration values (equivalent to the seismic hazard factor Z in AS1170.4) and the approaches used. The hazard values are calculated on rock sites (AS1170.4 Site Class Be) for a probability of exceedance of 10% in 50 years (0.0021 per annum). Continued refinement of these values will occur throughout, and in response to, the first public comment period. While only minor changes are expected, the final NSHA18 will be completed prior to Standard Australia’s planned second public comment period (likely in late 2017).
The NSHA18 update yields many important advances on its predecessors, including:
• calculation in a full probabilistic framework (e.g., Cornell, 1968) using the Global Earthquake Model Foundation’s OpenQuake-engine (Pagani et al., 2014);
• consistent expression of earthquake magnitudes in terms of moment magnitude, MW;
• inclusion of epistemic uncertainty through the use of third-party source models contributed by the Australian seismology community;
• inclusion of epistemic uncertainty on magnitude-frequency distributions;
• inclusion of a national fault-source model based on the Australian Neotectonic Features database (Clark et al., 2012; Clark et al., 2016);
• inclusion of epistemic uncertainty on fault-slip-model magnitude-frequency distributions and earthquake clustering; and
• use of modern ground-motion models.
Simple
Identification info
- Date (Creation)
- 2017-05-22T00:00:00
- Date (Publication)
- 2020-10-01T04:47:51
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/110567
- Cited responsible party
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Role Organisation / Individual Name Details Author Allen, T.
Author Griffin, J.
Author Clark, D.
Author Ghasemi, H.
Author Leonard, M.
Author Volti, T.
- Name
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Professional Opinion
- Issue identification
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2017/02
- Status
- Final
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- Not planned
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Theme
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natural hazards
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- Discipline
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seismic hazard
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- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Classification
- Unclassified
Associated resource
- Association Type
- null
- Title
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The 2018 National Seismic Hazard Assessment for Australia
- Citation identifier
- 123370
- Citation identifier
- edcf5aab-0be9-45d4-ac25-e1410f357b68
- Language
- English
- Character encoding
- UTF8
Distribution Information
- OnLine resource
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Download the Professional Opinion (pdf) [6.2 MB]
Download the Professional Opinion (pdf) [6.2 MB]
- Distribution format
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pdf
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Resource lineage
- Statement
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For the purposes of delivering the draft design values to the Standards Australia subcommittee in their update of AS1170.4 Earthquake Design Actions
- Hierarchy level
- Document
Metadata constraints
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/b21ca0d8-0669-4ad4-86a5-b8c70157417d
- Title
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GeoNetwork UUID
Type of resource
- Resource scope
- Document
- Name
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Professional Opinion
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/110567
- Metadata linkage
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https://internal.ecat.ga.gov.au/geonetwork/srv/eng/search?uuid=b21ca0d8-0669-4ad4-86a5-b8c70157417d
Point-of-truth metadata URL
- Date info (Creation)
- 2017-05-20T02:09:47
- Date info (Revision)
- 2017-12-11T02:52:51
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Edition date
- 2015-07-01T00:00:00
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, April 2015