Product catalogue
Tsunami inundation from real and synthetic heterogeneous earthquake slip distributions
This study investigates whether four different Synthetic Finite Fault Models (SFFM) can simulate stochastic earthquake tsunami with similar statistical properties to real earthquake-tsunami events. The latter are represented using heterogenous slip distributions from Finite Fault Inversions (FFI) for oceanic subduction interface earthquakes. To apply the SFFM, regression relations are developed between earthquake moment magnitude and parameters controlling the slip roughness, using a new method to fit SFFM to FFI.
SFFM with more capacity to spatially localize slip are better able to simulate higher-slip regions on the FFI, which have the most in
fluence on tsunami inundation in our simulations. The tsunami inundation associated with the FFI and SFFM is computed in two-dimensions over idealised topography.
The best-performing SFFM generates tsunami inundation which envelopes the FFI inundation in 77% of cases using ten synthetic events (close to the ideal value of 82%), while the other SFFM show greater tendencies to underestimate inundation. These differences are related to the capacity of each
SFFM to produce spatially localised slip distributions. The results highlight that SFFM cannot be assumed to reliably quantify uncertainties in the tsunami inundation of real earthquakes, and the use of untested SFFM could create non-conservative bias in tsunami hazard assessments. However the most successful model used here performs quite well, although it probably underestimates inundation for small earthquakes more often than an optimal model.
Simple
Identification info
- Date (Publication)
- 2014-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81959
- Cited responsible party
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Role Organisation / Individual Name Details Author Davies, G.
1 Author Horspool, N.
2 Author Miller, V.
3
- Point of contact
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Role Organisation / Individual Name Details Custodian CSEMD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
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- Geoscientific information
- Maintenance and update frequency
- Not planned
Resource format
- Title
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Product data repository: Various Formats
- Website
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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
- Keywords
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External Publication
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Geophysical Fluid Dynamics
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- Keywords
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Published_Internal
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Link to Article
Link to Article
- Distribution format
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html
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Resource lineage
- Statement
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Paper written by the authors
- Hierarchy level
- Non geographic dataset
- Other
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External Publication
- Description
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See paper
- Description
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See paper
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/ff4aada9-ee9b-3586-e044-00144fdd4fa6
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
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GA Publication: External Publication
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/81959
- Date info (Revision)
- 2018-04-11T02:35:30
- Date info (Creation)
- 2014-07-29T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551