Authors / CoAuthors
Ghasemi, H. | Griffin, J. | Heimann, S. | Leonard, M. | Allen, T.
Abstract
An earthquake catalogue based on the moment magnitude scale is required for calculation of seismic hazard in Australia. However, the estimation of moment magnitudes for small to moderate sized earthquakes is not a routine process at seismic observatories, resulting in a catalogue mainly based on the local magnitude scale for Australia. In this study we explore the application of an automated procedure to estimate moment magnitudes by minimizing the misfit between observed and synthetic displacement spectra. We compile a reference catalogue of 15 earthquakes with moment magnitude values between 3.8 and 5.4 which were based on previous studies. The moment magnitudes were then recalculated and we find that the estimated moment magnitudes are in good agreement with reference values with differences mainly lower than 0.2. However, the reported local magnitudes of the selected events are consistently higher than the reference values with differences between 0.3 and 1.0. The automated procedure will be applied to compute moment magnitudes of the well recorded events in Australia, and to derive a scaling relation between local magnitude and moment magnitude. This abstract was submitted and presented to the 2016 Australian Earthquake Engineering Society Conference (AEES) ( https://aees.org.au/aees-asian-seismological-commission-conferences/)
Product Type
document
eCat Id
100381
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
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- seismic hazard assessment
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- earthquake catalogue
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- moment magnitude
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- Published_External
Publication Date
2023-10-24T05:04:21
Creation Date
2016-05-20T00:00:00
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Status
completed
Purpose
Abstract submitted to Australian Earthquake Engineering Society 2016 Conference
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notPlanned
Topic Category
geoscientificInformation
Series Information
Australian Earthquake Engineering Society 2016 Conference, Nov 25-27, Melbourne, Vic
Lineage
Abstract submitted to Australian Earthquake Engineering Society 2016 Conference
Parent Information
Extents
[-54.75, -9.2402, 112.92, 159.11]
Reference System
Spatial Resolution
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