Authors / CoAuthors
Ghasemi, H. | Allen, T.
Abstract
One of the key challenges in assessing earthquake hazard in Australia is understanding the attenuation of ground-motion through the stable continental crust. There are now a handful of ground-motion models (GMMs) that have been developed specifically to estimate ground-motions from Australian earthquakes. These GMMs, in addition to models developed outside Australia, are considered in the 2018 National Seismic Hazard Assessment (NSHA18; Allen et al., 2017). In order to assess the suitability of candidate GMMs for use in the Australian context, ground-motion data forom small-to-moderate Australian earthquakes have been gathered. Both qualitative and quantitative ranking techniques (e.g., Scherbaum et al., 2009) have been applied to determine the suitability of candidate GMMs for use in the NSHA18. This report provides a summary of these ranking techniques and provides a discussion on the utility of these methods for use in seismic hazard assessments in Australia; in particular for the NSHA18. The information supplied herein was provided to participants of the Ground-Motion Characterisation Expert Elicitation workshop, held at Geoscience Australia on 9 March 2017 (Griffin et al., 2018).
Product Type
document
eCat Id
123034
Contact for the resource
Point of contact
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Digital Object Identifier
Keywords
- ( Discipline )
-
- earthquake hazard
- ( Product )
-
- Published_External
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- HVC_144647
Publication Date
2018-10-10T03:23:22
Creation Date
2018-09-18T00:00:00
Security Constraints
Legal Constraints
Status
final
Purpose
This Record is the third in the series of Records and datasets that support the release of the NSHA18 (overarching overview provided at ecat 123020)
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Record 2018/029
Lineage
Geoscience Australia develops the National Seismic Hazard Assessment (NSHA) for Australia. The NSHA defines the level of earthquake ground shaking across Australia that has a given likelihood of being exceeded in a given time period. Knowing how the ground-shaking hazard varies across Australia allows higher hazard areas to be identified and prioritised for the development of mitigation strategies so communities can be more resilient to earthquake events. The NSHA also provides key information to the Australian Government Building Codes Board, so buildings and infrastructure design standards can be updated to ensure they can withstand earthquake events in Australia. Geoscience Australia schedules the update to the NSHA with the update to the earthquake loading standard, so the committee can consider any changes to the seismic hazard risk of Australia, and whether the code needs to be amended to reflect this. The 2018 update was scheduled to inform the 2017 revision of the earthquake loading standard. Promotion of project via http://www.ga.gov.au/about/projects/safety/nsha
Parent Information
Extents
[-44, -9, 112, 154]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - wasInformedBy
The 2018 National Seismic Hazard Assessment: Model overview
eCat Identifier - 123020
Association Type - wasInformedBy
10% in 50 year seismic hazard map
eCat Identifier - 123132
Association Type - crossReference
Expert elicitation of model parameters for the 2018 National Seismic Hazard Assessment - Summary of workshop, methodology and outcomes
eCat Identifier - 123027
Association Type - wasInformedBy
The 2018 National Seismic Hazard Assessment for Australia – model input files
eCat Identifier - 123049
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Source Information