中文版 | English
Title

Modulation of Seismic Radiation by Fault-Scale Geology of the 2016 Mw 6.0 Shallow Petermann Ranges Earthquake (PRE) in Central Australia

Author
Corresponding AuthorAttanayake,Januka
Publication Years
2023-04-01
DOI
Source Title
ISSN
0037-1106
EISSN
1943-3573
Volume113Issue:2Pages:604-612
Abstract
Understanding the modulatory influence of fault-scale geology on seismic behavior of earthquake faults is central to determining the physics of faulting and seismic hazard analysis. Although laboratory experiments predict that seismic parameters can be modulated by fault-scale geology, there is scant empirical evidence of this process at field scale due largely to a lack of shallow earthquakes of which causative faults can be mapped to known bedrock structure. The 20 May 2016 M 6 Petermann Ranges earthquake (PRE) is the best-recorded continental event in Australia to date, and it is an excellent candidate to investigate the possible link between seismic parameters and fault-scale geology as its causative fault has previously been linked to known bedrock structure using distributions of aftershocks, surface observations, and geophysical mapping. In this study, we analyze strain energy partitioning of PRE by determining seismic radiation efficiency (0.31) and apparent stress (0.34 MPa) together with previously estimated stress drop (2.2 MPa) and find that the combination of these macroseismic parameters deviates from that expected of a shallow immature fault in intraplate continental regions typically character-ized by large recurrence intervals. It instead appears to have mimicked a mature fault, which we attribute to the characteristics of the causative fault confined to mechanically weaker, phyllosilicate-rich foliations of the bedrock that have anomalously lower fracture energy. Therefore, PRE rupture suggests the presence of a spectrum of shallow (< 20 km) fault slip behavior modulated by fault-scale geology.
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
WOS Research Area
Geochemistry & Geophysics
WOS Subject
Geochemistry & Geophysics
WOS Accession No
WOS:000962855000004
Publisher
ESI Research Field
GEOSCIENCES
Scopus EID
2-s2.0-85152039660
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/524176
DepartmentDepartment of Earth and Space Sciences
Affiliation
1.School of Geography,Earth and Atmospheric Sciences,The University of Melbourne,Parkville,Australia
2.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,China
First Author AffilicationDepartment of Earth and Space Sciences
Recommended Citation
GB/T 7714
Mo,Tao,Attanayake,Januka. Modulation of Seismic Radiation by Fault-Scale Geology of the 2016 Mw 6.0 Shallow Petermann Ranges Earthquake (PRE) in Central Australia[J]. Bulletin of the Seismological Society of America,2023,113(2):604-612.
APA
Mo,Tao,&Attanayake,Januka.(2023).Modulation of Seismic Radiation by Fault-Scale Geology of the 2016 Mw 6.0 Shallow Petermann Ranges Earthquake (PRE) in Central Australia.Bulletin of the Seismological Society of America,113(2),604-612.
MLA
Mo,Tao,et al."Modulation of Seismic Radiation by Fault-Scale Geology of the 2016 Mw 6.0 Shallow Petermann Ranges Earthquake (PRE) in Central Australia".Bulletin of the Seismological Society of America 113.2(2023):604-612.
Files in This Item:
There are no files associated with this item.
Related Services
Fulltext link
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Export to Excel
Export to Csv
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Mo,Tao]'s Articles
[Attanayake,Januka]'s Articles
Baidu Scholar
Similar articles in Baidu Scholar
[Mo,Tao]'s Articles
[Attanayake,Januka]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Mo,Tao]'s Articles
[Attanayake,Januka]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.