Authors / CoAuthors
Davies, G.
Abstract
<p>The 2018 Australian Probabilistic Tsunami Hazard Assessment (PTHA18) was developed by Geoscience Australia to better understand Australia’s tsunami hazard due to earthquakes in the Pacific and Indian Oceans. The PTHA18 contains over a million hypothetical earthquake-tsunami scenarios, with associated return periods which are constrained using historical earthquake data and long-term plate tectonic motions. The tsunami propagation is modelled globally for 36 hours, and results are stored at thousands of sites in deep waters offshore of Australia. Average Return Interval (ARI) estimates are also provided, along with a representation of the associated uncertainties. ARI uncertainties tend to be large because of fundamental limitations in current scientific knowledge regarding the frequency of large earthquakes on global subduction zones. <p>The PTHA18 provides a nationally consistent basis for earthquake-tsunami scenario design, as required for inundation hazard assessments. The results and source-code are also freely available. The current paper aims to provide a short and accessible introduction to the PTHA18 methodology and results, while deliberately limiting technical details which are covered extensively in the associated technical report and code repository.
Product Type
document
eCat Id
128550
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Resource provider
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
- ( Theme )
-
- Tsunami
- ( Theme )
-
- Earthquake
- ( Project )
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- Probabilistic Hazard Assessment
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- Published_External
Publication Date
2020-03-25T00:58:13
Creation Date
2019-05-01T01:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
Paper submitted to Coasts and Ports 2019 conference.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
Not supplied
Parent Information
Extents
[-44, -9, 112, 154]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - crossReference
The 2018 Australian Probabilistic Tsunami Hazard Assessment
eCat Identifier - 122789,
UUID - fd1533d2-b176-45b1-9d40-5936aaef7d6f
Association Type - wasInformedBy
The 2018 Australian Probabilistic Tsunami Hazard Assessment
eCat Identifier - 122789,
UUID - fd1533d2-b176-45b1-9d40-5936aaef7d6f
Association Type - wasGeneratedBy
PTHA18 source-code repository and data access scripts
eCat Identifier - 83958,
UUID - 1da13c50-0815-334e-e053-12a3070abfaa
Association Type - wasGeneratedBy
2018 Australian Probabilistic Tsunami Hazard Assessment Results
eCat Identifier - 122796,
UUID - 11af3b85-b6b2-4e77-9e89-a18041d8b083
Source Information