Authors / CoAuthors
Brenn, G. | Shamsalsadati, S. | Sippl, C. | Comoglu, M.
Abstract
The Mwp 6.1 Petermann Ranges earthquake that occurred on 20 May, 2016 in the Central Ranges, NT, is the largest onshore earthquake to be recorded in Australia since the 1988 Tennant Creek sequence. While geodetic and geophysical analyses have characterized the extent of surface rupture and faulting mechanism respectively, a comprehensive aftershock characterization has yet to be performed. Data has been acquired from a 12-station temporary seismic network deployed jointly by the ANU and Geoscience Australia (GA), collected from five days following the mainshock to early October. Taking advantage of enhanced automatic detection techniques using the SeisComP3 real-time earthquake monitoring software within the National Earthquake Alerts Centre (NEAC) at GA, we have developed a comprehensive earthquake catalogue for this mainshock-aftershock sequence. Utilising the NonLinLoc location algorithm combined with a Tennant Creek-derived velocity model, we have preliminarily located over 5,800 aftershocks. With additional spatio-temporal analyses and event relocation, our objective will be to use these aftershocks to help delineate the geometry of the headwall rupture along the Woodroffe Thrust. These high-resolution aftershock detection techniques are intended to be implemented in real-time within the NEAC following future significant Australian intraplate earthquakes. This paper was presented at the Australian Earthquake Engineering Society 2021 Virtual Conference, Nov 25 – 26.
Product Type
document
eCat Id
146038
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
-
- Natural HazardsEARTH SCIENCESEarthquake Engineering
- ( Discipline )
-
- Australian earthquakes
- ( Theme )
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- 2016 Petermann Ranges earthquake
- ( Discipline )
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- earthquake aftershocks
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- Aftershock Analysis
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- SeisComP
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- Published_External
Publication Date
2022-11-10T06:29:33
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completed
Purpose
Paper presented at Australian Earthquake Engineering Society 2021 Virtual Conference Paper
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notPlanned
Topic Category
geoscientificInformation
Series Information
Lineage
Paper presented at Australian Earthquake Engineering Society 2021 Virtual Conference Paper
Parent Information
Extents
[-26.50, -25.00, 129.00, 130.50]
Reference System
Spatial Resolution
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Associations
Association Type - wasInformedBy
Earthquake environmental effects produced by the Mw 6.1, 20th May 2016 Petermann earthquake, Australia
eCat Identifier - 144168,
UUID - 7577cecb-7a92-427a-b978-cd3ddbc7e811
Association Type - wasInformedBy
The 2016 Mw 6.1 Petermann Ranges earthquake rupture, Australia: another “one-off” stable continental region earthquake
eCat Identifier - 144173,
UUID - 172b4c96-65f3-4ba5-b18c-6dc05dd58c3f
Source Information