Authors / CoAuthors
Wilkie, J. | Gibson, G.
Abstract
The effective quality factor Q for S wave attenuation in the Victorian lithosphere has been calculated using both the spectral ratio and coda Q methods. The frequency range studied was 2-20 Hz, and Q was found to be frequency dependent. A simple model has been adopted, with a low Q in the top 4 km of the crust that varies from 20 at a frequency of 1 Hz to 60 at 10 Hz. The lower crust has a higher Q that varies from 100 at 1 Hz to 700 at 10 Hz. Empirical formulae for Q determined by linear regression of logarithmic plots of amplitude versus frequency are Q = 20f 0.5 for the 4 km thick upper crust, and Q = 100f 0.85 for the lower crust, where f is frequency.
Product Type
document
eCat Id
81414
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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2601
Australia
Keywords
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- GA PublicationJournal
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- VIC
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
1995-01-01T00:00:00
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unknown
Topic Category
geoscientificInformation
Series Information
AGSO Journal of Australian Geology and Geophysics 15:4:511-517
Lineage
Unknown
Parent Information
Extents
[-40.0, -34.0, 140.5, 150.0]
Reference System
Spatial Resolution
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