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CITATION.cff

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# This CITATION.cff file was generated with cffinit.
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# Visit https://bit.ly/cffinit to generate yours today!
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cff-version: 1.2.0
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title: abwd_declust
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message: >-
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Mainshock and Aftershock Classification via the Woodell &
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Abrahamson 2014 and 2018 Distance-Window
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type: software
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authors:
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- given-names: Aaron Jerome
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family-names: Rampersad
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affiliation: 'University of Canterbury, Christchurch, New Zealand'
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orcid: 'https://orcid.org/0009-0009-6134-3828'
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- given-names: Joel Nathan
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family-names: Ridden
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affiliation: 'University of Canterbury, Christchurch, New Zealand'
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repository-code: 'https://github.com/AaronJR474/abwd_declust'
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abstract: >-
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This repository implements the Woodell & Abrahamson (2014)
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and Woodell (2018) aftershock classification algorithm,
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now adopted in the NGA-West3 project. The method builds on
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the traditional time–distance window approach of Gardner &
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Knopoff, but introduces three alternative distance-window
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metrics that reference the actual rupture plane geometry
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rather than a fixed circular distance from the epicenter.
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By retaining the original time-window formulation while
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redefining the spatial window, the algorithm provides a
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more accurate and reproducible classification of mainshock
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versus aftershock events. This refinement was first
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applied to the NGA-West2 Ground-Motion Database and has
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since become the standard in NGA projects. The code here
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enables researchers to apply the method to their own
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earthquake catalogs, ensuring consistency with the
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NGA-West3 framework and supporting transparent,
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reproducible seismic hazard analyses.
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keywords:
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- engineering seismology
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- aftershock
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- mainshock
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- declustering
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- ground-motion database
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license: GPL-3.0

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