Authors / CoAuthors
Davies, G. | Griffin, J.
Abstract
This report describes the 2018 Probabilistic Tsunami Hazard Assessment for Australia (henceforth PTHA18). The PTHA18 estimates the frequency with which tsunamis of any given size occur in deep waters around the Australian coastline. To do this it simulates hundreds of thousands of possible tsunami scenarios from key earthquake sources in the Pacific and Indian Oceans, and models the frequency with which these occur. To justify the PTHA18 methodologies a significant fraction of the report is devoted to testing the tsunami scenarios against historical observations, and comparing the modelled earthquake rates against alternative estimates. Although these test provide significant justification for the PTHA18 results, there remain large uncertainties in “how often” tsunamis occur at many sites. This is due to fundamental limitations in present-day scientific knowledge of how often large earthquakes occur.
Product Type
document
eCat Id
122789
Contact for the resource
Point of contact
Point of contact
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Digital Object Identifier
Keywords
- ( Theme )
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- Tsunami hazard assessment
- ( Theme )
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- uncertainty quantification
- ( Theme )
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- earthquake sources
- ( Theme )
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- hazard modelling
- ( Theme )
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- annual exceedance
- ( Theme )
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- hazard deaggregation
- ( Theme )
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- tsunami scenario
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- Published_External
Publication Date
2018-11-02T04:27:29
Creation Date
2018-09-10T00:00:00
Security Constraints
Legal Constraints
Status
onGoing
Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Record 2018/41
Lineage
Developed at Geoscience Australia
Parent Information
Extents
[-44, -9, 112, 154]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - wasGeneratedBy
PTHA18 source-code repository and data access scripts
eCat Identifier - 83958,
UUID - 1da13c50-0815-334e-e053-12a3070abfaa
Association Type - wasInformedBy
2018 Australian Probabilistic Tsunami Hazard Assessment Results
eCat Identifier - 122796,
UUID - 11af3b85-b6b2-4e77-9e89-a18041d8b083
Source Information