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Title: A comparative analysis of five commonly implemented declustering algorithms
Authors: Perry, Mason
Bendick, Rebecca
Keywords: Earth and Environmental Sciences
Issue Date: 2024
Source: Perry, M. & Bendick, R. (2024). A comparative analysis of five commonly implemented declustering algorithms. Journal of Seismology.
Journal: Journal of Seismology 
Abstract: Declustering of earthquake catalogs, that is determining dependent and independent events in an earthquake sequence, is a common feature of many seismological studies. While many different declustering algorithms exist, each has different performance and sensitivity characteristics. Here, we conduct a comparative analysis of the five most commonly used declustering algorithms: Garnder and Knopoff (1974), Uhrhammer (1986), Reasenberg (1985), Zhuang et al. (2002), and Zaliapin et al. (2008) in four different tectonic settings. Overall, we find that the Zaliapin et al. (2008) algorithm effectively removes aftershock sequences, while simultaneously retaining the most information (i.e. the most events) in the output catalog and only slightly modifying statistical characteristics (i.e. the Gutenberg Richter b-value). Both Gardner and Knopoff (1974) and Zhuang et al. (2002) also effectively remove aftershock sequences, though they remove significantly more events than the other algorithms. Uhrhammer (1986) also effectively removes aftershock sequences and removes fewer events than Gardner and Knopoff (1974) or Zhuang et al. (2002), except when large magnitude events are present. By contrast, Reasenberg (1985) only effectively removed aftershocks in one of the test regions.
ISSN: 1383-4649
DOI: 10.1007/s10950-024-10221-8
Organisations: University of Montana 
Research Centres: Earth Observatory of Singapore 
Rights: © 2024 The Author(s), under exclusive licence to Springer Nature B.V. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at
Fulltext Permission: embargo_20250529
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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