Towards a homogeneous earthquake catalogue for Australia

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/)

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Date (Creation)
2016-05-20T00:00:00
Date (Publication)
2023-10-24T05:04:21
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/100381

Cited responsible party
Role Organisation / Individual Name Details
Author

Ghasemi, H.

 Place and Communities Internal Contact
Author

Griffin, J.

 Place and Communities Internal Contact
Author

Heimann, S.

 External Contact
Author

Leonard, M.

 External Contact
Author

Allen, T.

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Commonwealth of Australia (Geoscience Australia)

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Name

Australian Earthquake Engineering Society 2016 Conference, Nov 25-27, Melbourne, Vic

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Abstract submitted to Australian Earthquake Engineering Society 2016 Conference

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Completed
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Commonwealth of Australia (Geoscience Australia)

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Place and Communities Division

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Griffin, J.

 Place and Communities Internal Contact
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  • Geoscientific information

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Not planned

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Title

Product data repository: Various Formats

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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

theme.ANZRC Fields of Research.rdf

  • EARTH SCIENCES

Keywords

  • seismic hazard assessment

Keywords

  • earthquake catalogue

Keywords

  • moment magnitude

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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http://creativecommons.org/licenses/

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(c) Commonwealth of Australia (Geoscience Australia) 2016

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Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified
Language
English
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UTF8

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Commonwealth of Australia (Geoscience Australia)

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Link to Conference Page

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Abstract submitted to Australian Earthquake Engineering Society 2016 Conference

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Dataset

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Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/e781af72-7ce2-4d44-8e68-766e02a1dd5d

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

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Point of contact

Griffin, J.

 Place and Communities Internal Contact

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Document
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Conference paper

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/100381

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/e781af72-7ce2-4d44-8e68-766e02a1dd5d

Date info (Creation)
2016-05-20T14:23:02
Date info (Revision)
2016-05-20T16:26:16

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

earthquake catalogue moment magnitude seismic hazard assessment
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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