Updating the National Seismic Hazard Assessment. Philosophy and Implications
<div>Dam owners and operators must consider a range of hazards for the design and maintenance of infrastructure assets – including seismic hazards. In 2018, Geoscience Australia completed its National Seismic Hazard Assessment (the NSHA). This assessment used best-practice probabilistic approaches and resulted in considerably lower hazard estimates than previously considered applicable for Australia. This assessment, and subsequent site-specific assessments conducted on behalf of the dam industry have yielded divergent estimates in hazard. This has caused confusion and concern amongst the dam engineering community. Herein, we unpack the rationale for these large discrepancies, and identify best practices for the treatment of earthquake catalogues when undertaking probabilistic seismic hazard assessments for extreme-consequence facilities. A short summary of the 2023 update to the NSHA is also provided.
Presented at the 2023 Australian National Committee on Large Dams (ANCOLD) Conference
Simple
Identification info
- Date (Creation)
- 2023-07-14T16:00:00
- Date (Publication)
- 2024-10-30T22:02:56
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/148624
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Allen, T.
Internal Contact Author Griffin, J.
Internal Contact Author Clark, D.
Internal Contact Author Ghasemi, H.
Internal Contact Author Cummins, P.
Internal Contact Author Ebrahimi, R.
Internal Contact Author Martin, S.
Internal Contact
- Name
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Australian National Committee on Large Dams (ANCOLD) Conference 25-27 October 2023, Cairns, QLD
- Purpose
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Conference paper - describes the rationale for changes to catalogue magnitudes in the National Seismic Hazard Assessment and provides recommendations for the Australin National Committee on Large Dams
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Place and Communities Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Allen, T.
Internal Contact
- Spatial representation type
- Topic category
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- Geoscientific information
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
- Project
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seismic hazard
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- Project
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NSHA
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- Project
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earthquake catalogue
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- Keywords
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seismic hazard assessment
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- Keywords
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NSHA
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- Keywords
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earthquake catalogue
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- theme.ANZRC Fields of Research.rdf
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Seismology and seismic exploration
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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
- Addressee
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Role Organisation / Individual Name Details User Any
- Use constraints
- License
- Use constraints
- Other restrictions
- Other constraints
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© Commonwealth of Australia (Geoscience Australia) 2023
Resource constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
Associated resource
- Association Type
- Had derivation
- Title
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The 2018 National Seismic Hazard Assessment: Model overview
- Citation identifier
- 123020
- Citation identifier
- 9456a1ee-400d-43fa-bce3-58d1cd8cdf55
Associated resource
- Association Type
- Had derivation
- Title
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The 2018 national seismic hazard assessment of Australia: Quantifying hazard changes and model uncertainties
- Citation identifier
- 126324
- Citation identifier
- 9d84d182-eb0d-4637-b5cd-580b7da85cde
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Link to Conference Page
Link to Conference Page
- Distribution format
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- OnLine resource
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Link to Paper
Link to Paper
- Distribution format
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- OnLine resource
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Related Record: The 2023 National Seismic Hazard Assessment for Australia. Model Overview
Related Record: The 2023 National Seismic Hazard Assessment for Australia. Model Overview
- Distribution format
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- OnLine resource
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Related Record: The 2023 National Seismic Hazard Assessment of Australia Rationale for changes in hazard
Related Record: The 2023 National Seismic Hazard Assessment of Australia Rationale for changes in hazard
- Distribution format
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- OnLine resource
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Related Record: The 2023 National Seismic Hazard Assessment for Australia. Model Input and Output Data
Related Record: The 2023 National Seismic Hazard Assessment for Australia. Model Input and Output Data
- Distribution format
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Resource lineage
- Statement
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<div>Extends knowledge developed through the 2018 National Seismic Hazard Assessment</div>
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/d16b3bf1-fd3a-4dfd-b1af-3e917a7bf10c
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Allen, T.
Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Article / Conference Paper
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/148624
- Date info (Creation)
- 2024-08-05T04:28:15
- Date info (Revision)
- 2024-08-05T04:28:15
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
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- http://pid.geoscience.gov.au/dataset/ga/122551