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Large earthquake recurrence in low seismicity regions: accounting for aperiodicity

Characterising earthquake hazard in low seismicity regions is challenging, due to both the inherent lack of data and an incomplete theoretical understanding of the controls on earthquake occurrence away from plate boundaries. In the plate boundary paradigm, elastic rebound theory predicts that cycles of strain accumulation and release will result in regular, or quasiperiodic, recurrence of large earthquakes on individual faults. Analysis of a global compilation of long-term earthquake records shows that this largely holds in plate boundary regions, but begins to break down in intraplate and other low seismicity regions, where more irregular, or aperiodic, earthquake recurrence is observed.

In this talk the Otago region of southern New Zealand is used as a case study of a low seismicity region with evidence for aperiodic earthquake recurrence. New paleoearthquake and slip rate data are used to extend the record of faulting back more than 100 ka on two faults, the Hyde and Dunstan faults. These data allow the variability of earthquake rates on these faults to be characterised, with novel Bayesian methods developed to forecast the probability of future earthquakes. Finally, the talk discusses the potential for application of these methods in the Australian context.

Simple

Identification info

Date (Creation)
2022-03-30T00:00:00
Date (Publication)
2024-05-13T08:07:37
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/148804

Citation identifier
Digital Object Identifier/https://dx.doi.org/10.26186/148804

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Commonwealth of Australia (Geoscience Australia)

Voice
Author

Griffin, J.

External Contact
Name

Wednesday Seminar

Purpose

To promote the scientific achievements of Geoscience Australia.

Status
Completed
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

Voice
Point of contact

Griffin, J.

External Contact
Resource provider

Place, Space and Communities Division

External Contact
Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W


Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Protocol

FILE:DATA-DIRECTORY

Name of the resource

Data Store directory containing the digital product files

Description

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
  • Wednesday Seminar

Keywords
  • earthquakes

Keywords
  • periodicity

Keywords
  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License
Other constraints

(c) Commonwealth of Australia (Geoscience Australia) 2023

Resource constraints

Title

Australian Government Security Classification System

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

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

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

Voice facsimile
OnLine resource

Link to YouTube video

Link to YouTube video

Distribution format

Resource lineage

Statement

Seminar recording as part of the Geoscience Australia public talks programs

Metadata constraints

Title

Australian Government Security Classification System

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

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/2fcc2953-8962-4d73-a5ef-9d47ccdbfbfc

Title

GeoNetwork UUID

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

Commonwealth of Australia (Geoscience Australia)

Voice
Owner

Sedgmen, L.

Corporate Division Internal Contact
Point of contact

Griffin, J.

External Contact

Type of resource

Resource scope
Document
Name

Presentation

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/148804

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/5167d912-6784-4371-9938-3931e84ca6f1

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/5d2a3f18-25cc-4ad4-9e1b-32a58a0f2c00

Metadata linkage

https://ecat.ga.gov.au/geonetwork/dashboard/eng/catalog.search#/metadata/2fcc2953-8962-4d73-a5ef-9d47ccdbfbfc

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/2fcc2953-8962-4d73-a5ef-9d47ccdbfbfc

Date info (Creation)
2019-04-08T01:55:29
Date info (Revision)
2019-04-08T01:55:29

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

Wednesday Seminar earthquakes periodicity
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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