Authors / CoAuthors
Allen, T. | Griffin, J. | Clark, D. | Ghasemi, H. | Cummins, P. | Ebrahimi, R. | Martin, S.
Abstract
<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
Product Type
document
eCat Id
148624
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Keywords
- ( Project )
-
- seismic hazard
- ( Project )
-
- NSHA
- ( Project )
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- earthquake catalogue
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- seismic hazard assessment
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- NSHA
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- earthquake catalogue
- theme.ANZRC Fields of Research.rdf
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- Seismology and seismic exploration
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- Published_External
Publication Date
2024-10-30T22:02:56
Creation Date
2023-07-14T16:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
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
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Australian National Committee on Large Dams (ANCOLD) Conference 25-27 October 2023, Cairns, QLD
Lineage
<div>Extends knowledge developed through the 2018 National Seismic Hazard Assessment</div>
Parent Information
Extents
[-44, -9, 112, 154]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - hadDerivation
The 2018 National Seismic Hazard Assessment: Model overview
eCat Identifier - 123020,
UUID - 9456a1ee-400d-43fa-bce3-58d1cd8cdf55
Association Type - hadDerivation
The 2018 national seismic hazard assessment of Australia: Quantifying hazard changes and model uncertainties
eCat Identifier - 126324,
UUID - 9d84d182-eb0d-4637-b5cd-580b7da85cde
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