Authors / CoAuthors
Allen, T. | Murdie, R.E. | Miller, M.S.
Abstract
<div>Earthquake ground-motion data recorded on the South-West Australia (seismic) Network (SWAN) are augmented to existing ground-motion datasets for the southwest Western Australian region. These data are used to develop an updated Fourier amplitude attenuation model for the region. The model is applicable for the moment magnitude range of 2.5 ≤ <em>M</em>W < 5.3, hypocentral distances less than 500 km, and for 150 logarithmically spaced frequencies from 0.1 ≤ <em>f</em> < 36 Hz. The data collected through the SWAN improves the constraint on the near-source attenuation of Fourier spectral amplitudes and will enable improved characterisation of earthquake source characteristics. Site-specific amplification effects are evaluated, and these will be used in concert with measurements of the seismic site properties to develop an attenuation model for a reference seismic site class. Stochastic simulations using the Fourier attenuation model will be used to improve ground-motion models for large-magnitude earthquakes that are applied in probabilistic seismic hazard analyses for the region. <b>Citation:</b> Allen, TI 2024, Site classification and VS30 determination for seismic hazard evaluation in the SWAN seismic network, Western Australia, in South West Australia Network (SWAN): passive seismic imaging and hazard analysis compiled by RE Murdie and MS Miller: Geological Survey of Western Australia, Report 255, p. 68-75
Product Type
document
eCat Id
149811
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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2601
Australia
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Keywords
- ( Project )
-
- Seismic Monitoring
- ( Project )
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- earth structure
- ( Project )
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- earthquake hazard
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- earthquake hazard
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- seismic attenuation
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- southwest seismic zone
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- Yilgarn Craton
- theme.ANZRC Fields of Research.rdf
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- Seismology and Seismic Exploration
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- Published_External
Publication Date
2025-02-21T05:16:51
Creation Date
2024-08-15T02:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
Will form a chapter of a Geological Survey of Western Australia Report sumarising the ARC-Linkage South-West Australia (seismic) Network (SWAN) Project
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Geological Survey of Western Australia, Report Report 255 68-75
Lineage
<div>Work completed under the ARC-Linkage Project: Enhanced 3-D seismic structure for Southwest Australia</div>
Parent Information
Extents
[-36.00, -12.00, 112.00, 129.00]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - wasDerivedFrom
Geological Survey of Western Australia: SWAN takes off - a new seismic monitoring project in Western Australia
eCat Identifier - 144331,
UUID - 9d0cb335-b929-4ee5-81af-c7d596d6d8a6
Association Type - wasDerivedFrom
Southwest Australia Seismic Network (SWAN): recording earthquakes in Australia’s most active seismic zone
eCat Identifier - 147500,
UUID - 66484763-c580-4752-a49a-b18de7dd8d63
Source Information