The 2018 National Seismic Hazard Assessment: Model overview

Geoscience Australia, together with contributors from the wider Australian seismology community, has produced a National Seismic Hazard Assessment (NSHA18) that is intended as an update to the 2012 National Seismic Hazard Maps (NSHM12; Burbidge, 2012; Leonard et al., 2013). This Geoscience Australia Record provides an overview of the development of the NSHA18. Time-independent, mean seismic design values are calculated on Standards Australia’s AS1170.4 Soil Class Be (at VS30=760 m/s) for the horizontal peak ground acceleration (PGA) and for the geometric mean of the spectral accelerations, Sa(T), for T = 0.1, 0.2, 0.3, 0.5, 1.0, 2.0 and 4.0 s over a 15-km national grid spacing. Hazard curves and uniform hazard spectra are also calculated for key localities. Maps of PGA, in addition to Sa(0.2 s) and Sa(1.0 s) and for a 10% probability of exceedance in 50 years (Figure A). Additional maps and seismic hazard products are provided in a separate Geoscience Australia Record (Allen, 2018).

The NSHA18 update yields many important advances over its predecessors, including:

- the calculation in a full probabilistic framework (Cornell, 1968) using the Global Earthquake Model Foundation’s OpenQuake-engine (Pagani et al., 2014);

- the consistent expression of earthquake magnitudes in terms of moment magnitude, MW;

- inclusion of a national fault-source model based on the Australian Neotectonic Features database (Clark et al., 2016);

- the inclusion of epistemic (i.e. modelling) uncertainty:

- through the use of multiple alternative source models;

- on magnitude-recurrence distributions;

- fault recurrence and clustering models;

- on maximum earthquake magnitudes for both fault and area sources through an expert elicitation workshop; and

- the use of modern ground-motion models, capturing the epistemic uncertainty on ground motion through an expert elicitation workshop.

Simple

Identification info

Date (Creation)
2018-09-18T00:00:00
Date (Publication)
2019-01-31T05:07:21
Date (Revision)
2019-03-06T23:56:30
Date (Revision)
2019-03-07T21:47:00
Date (Revision)
2019-04-09T01:08:52
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/123020

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.11636/Record.2018.027

Cited responsible party
Role Organisation / Individual Name Details
Author

Allen, T.
Author

Griffin, J.
Author

Leonard, M.
Author

Clark, D.
Author

Ghasemi, H.
Name

Record

Issue identification

2018/027

Purpose

This Record is the first in the series of Records and datasets that support the release of the NSHA18

Status
Final
Point of contact
Role Organisation / Individual Name Details
Point of contact

Allen, T.
Resource provider

Positioning and Community Safety Division
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W


Maintenance and update frequency
Periodic

Resource format

Title

Product data repository: Various Formats

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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

Discipline

  • earthquake hazard

Keywords

  • Published_External

Keywords

  • HVC_144647

Resource constraints

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Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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http://creativecommons.org/licenses/

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License
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License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

Associated resource

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Associated resource

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Was informed by
Title

Expert elicitation of model parameters for the 2018 National Seismic Hazard Assessment - Summary of workshop, methodology and outcomes

Citation identifier
123027

Citation identifier
f5214c3e-5585-4bee-9097-762a76ea9be4

Website

http://pid.geoscience.gov.au/document/ga/123027

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Expert elicitation of model parameters for the 2018 National Seismic Hazard Assessment - Summary of workshop, methodology and outcomes

Citation identifier
123027

Citation identifier
f5214c3e-5585-4bee-9097-762a76ea9be4

Website

http://pid.geoscience.gov.au/document/ga/123027

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Associated resource

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Title

Selection and ranking of ground-motion models for the 2018 National Seismic Hazard Assessment of Australia: Summary of ground-motion data, methodology and outcomes

Citation identifier
123034

Citation identifier
e26b04e6-3260-4656-b0a9-e1911ccedf74

Website

http://pid.geoscience.gov.au/document/ga/123034

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Associated resource

Association Type
Cross reference
Title

Selection and ranking of ground-motion models for the 2018 National Seismic Hazard Assessment of Australia: Summary of ground-motion data, methodology and outcomes

Citation identifier
123034

Citation identifier
e26b04e6-3260-4656-b0a9-e1911ccedf74

Website

http://pid.geoscience.gov.au/document/ga/123034

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

The 2018 National Seismic Hazard Assessment for Australia: Earthquake Epicentre Catalogue

Citation identifier
123041

Citation identifier
68196729-da2a-4c2c-8df4-cca4ce278d60

Website

http://pid.geoscience.gov.au/document/ga/123041

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

The 2018 National Seismic Hazard Assessment for Australia: Earthquake Epicentre Catalogue

Citation identifier
123041

Citation identifier
68196729-da2a-4c2c-8df4-cca4ce278d60

Website

http://pid.geoscience.gov.au/document/ga/123041

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Associated resource

Association Type
Was informed by
Title

Earthquake sources of the Australian plate margin: Revised models for the 2018 national tsunami and earthquake hazard assessments

Citation identifier
123048

Citation identifier
ea06c973-163d-47bc-b332-f245163e103b

Website

http://pid.geoscience.gov.au/document/ga/123048

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Earthquake sources of the Australian plate margin: Revised models for the 2018 national tsunami and earthquake hazard assessments

Citation identifier
123048

Citation identifier
ea06c973-163d-47bc-b332-f245163e103b

Website

http://pid.geoscience.gov.au/document/ga/123048

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Associated resource

Association Type
Was informed by
Title

The 2018 National Seismic Hazard Assessment for Australia: Model input files

Citation identifier
123049

Citation identifier
76e28953-86e1-4adc-a9c8-0c87c2990848

Website

http://pid.geoscience.gov.au/document/ga/123049

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

The 2018 National Seismic Hazard Assessment for Australia: Model input files

Citation identifier
123049

Citation identifier
76e28953-86e1-4adc-a9c8-0c87c2990848

Website

http://pid.geoscience.gov.au/document/ga/123049

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

The 2018 National Seismic Hazard Assessment for Australia – Data package, maps and grid values

Citation identifier
123028

Citation identifier
1be4f6be-a3a2-4ec5-b8af-4018f96243be

Website

http://pid.geoscience.gov.au/document/ga/123028

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

The 2018 National Seismic Hazard Assessment for Australia – Data package, maps and grid values

Citation identifier
123028

Citation identifier
1be4f6be-a3a2-4ec5-b8af-4018f96243be

Website

http://pid.geoscience.gov.au/document/ga/123028

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

10% in 50 year seismic hazard map

Citation identifier
123132

Citation identifier
8985f701-a897-45c3-adeb-0d6132dab2f7

Website

https://pid.geoscience.gov.au/dataset/ga/123132

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

NSHA18 catalogue

Citation identifier
123139

Citation identifier
bb2a574a-9556-4a3c-b1f1-2442823084c6

Website

https://pid.geoscience.gov.au/dataset/ga/123139

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

GG-Cat: earthquake epicentre catalogue

Citation identifier
123069

Citation identifier
ead309ee-4cb9-408c-b569-3941d11b3812

Website

https://pid.geoscience.gov.au/dataset/ga/123069

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Earthquake sources of the Australian plate margin: data for the 2018 national tsunami and earthquake hazard assessments

Citation identifier
123051

Citation identifier
e14d257e-5f0a-42c1-9e15-dc93b3bbbfbc

Website

https://pid.geoscience.gov.au/dataset/ga/123051

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

The 2018 National Seismic Hazard Assessment for Australia – Data

Citation identifier
123050

Citation identifier
323ac3a5-219a-4555-b234-0fbff4536ab8

Website

https://pid.geoscience.gov.au/dataset/ga/123050

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Associated resource

Association Type
Was informed by
Title

The 2018 national seismic hazard assessment of Australia: Quantifying hazard changes and model uncertainties

Citation identifier
126324

Citation identifier
9d84d182-eb0d-4637-b5cd-580b7da85cde

Website

https://pid.geoscience.gov.au/dataset/ga/126324

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

The 2018 national seismic hazard assessment of Australia: Quantifying hazard changes and model uncertainties

Citation identifier
126324

Citation identifier
9d84d182-eb0d-4637-b5cd-580b7da85cde

Website

https://pid.geoscience.gov.au/dataset/ga/126324

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Seismic Hazard Assessment in Australia: Can Structured Expert Elicitation Achieve Consensus in the “Land of the Fair Go”?

Citation identifier
130342

Citation identifier
5d1bfca2-aff4-4be9-b1c5-d59d70e92e2a

Website

https://pid.geoscience.gov.au/dataset/ga/130342

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

Seismic Hazard Assessment in Australia: Can Structured Expert Elicitation Achieve Consensus in the “Land of the Fair Go”?

Citation identifier
130342

Citation identifier
5d1bfca2-aff4-4be9-b1c5-d59d70e92e2a

Website

https://pid.geoscience.gov.au/dataset/ga/130342

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

Seismic hazard estimation in stable continental regions: does PSHA meet the needs for modern engineering design in Australia?

Citation identifier
131217

Citation identifier
4b8fd634-1a75-4e2b-8f30-0e39f4d7dff8

Website

https://pid.geoscience.gov.au/dataset/ga/131217

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Seismic hazard estimation in stable continental regions: does PSHA meet the needs for modern engineering design in Australia?

Citation identifier
131217

Citation identifier
4b8fd634-1a75-4e2b-8f30-0e39f4d7dff8

Website

https://pid.geoscience.gov.au/dataset/ga/131217

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

Reflections on the NSHA18: rethinking future seismic hazard assessments for Australia

Citation identifier
134150

Citation identifier
90f9a5a7-66aa-49d7-85f1-a11e87967d37

Website

https://pid.geoscience.gov.au/dataset/ga/134150

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

Reflections on the NSHA18: rethinking future seismic hazard assessments for Australia

Citation identifier
134150

Citation identifier
90f9a5a7-66aa-49d7-85f1-a11e87967d37

Website

https://pid.geoscience.gov.au/dataset/ga/134150

Link to eCat metadata record landing page

Associated resource

Association Type
Was informed by
Title

National Seismic Hazard Assessment 2018 MapServer

Citation identifier
130972

Citation identifier
ebe73721-cf13-4c6d-91a0-f959eb8479f8

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https://pid.geoscience.gov.au/service/ga/130972

Link to eCat metadata record landing page

Associated resource

Association Type
Cross reference
Title

National Seismic Hazard Assessment 2018 MapServer

Citation identifier
130972

Citation identifier
ebe73721-cf13-4c6d-91a0-f959eb8479f8

Website

https://pid.geoscience.gov.au/service/ga/130972

Link to eCat metadata record landing page

Associated resource

Association Type
Informed
Title

The 2023 National Seismic Hazard Assessment for Australia. Model Overview

Citation identifier
148969

Citation identifier
86d9ffcf-8bbf-4aad-b6c4-70fcae2be457

Website

http://pid.geoscience.gov.au/dataset/ga/148969

Link to eCat metadata record landing page

Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

 Voice
OnLine resource

Download the Record (pdf)

Download the Record (pdf)

Distribution format

  • pdf

OnLine resource

The 2018 National Seismic Hazard Assessment for Australia

The 2018 National Seismic Hazard Assessment for Australia

Resource lineage

Statement

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

Hierarchy level
Document

Metadata constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/9456a1ee-400d-43fa-bce3-58d1cd8cdf55

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Allen, T.

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Document
Name

GA publication: Record

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/123020

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/9456a1ee-400d-43fa-bce3-58d1cd8cdf55

Date info (Creation)
2018-05-04T03:37:56
Date info (Revision)
2018-05-04T03:38:12

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Edition date
2015-07-01T00:00:00
Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

HVC_144647 earthquake hazard

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