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Evolution of the multifractal parameters along different steps of a seismic activity: The example of Canterbury 2000–2018 (New Zealand)

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Monterrubio Velasco, MarisolMés informació
Lana Pons, Francisco JavierMés informacióMés informacióMés informació
Martínez Santafé, Maria DolorsMés informacióMés informacióMés informació
Zúñiga, Francisco Ramon
de la Puente Álvarez, Josep
Document typeArticle
Defense date2020-11-05
Rights accessOpen Access
Attribution 4.0 International
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 4.0 International
ProjectChEESE - Centre of Excellence for Exascale in Solid Earth (EC-H2020-823844)
Abstract
The multifractal detrended fluctuation algorithm is applied to a series of distances and elapsed times between consecutive earthquakes recorded along the years 2000–2018 in the Canterbury region (New Zealand). The time evolution of several multifractal parameters (Hurst exponent, Hölder central and maximum exponents, spectral amplitude, asymmetry, and complexity index) is analyzed. Peaks of multifractal parameters, with statistical significance exceeding 95%, are associated with three earthquakes of notable magnitude (equaling or exceeding Mw = 5.7). Additionally, some other peaks are also associated with the swarm of earthquakes of moderate magnitude. Possible shortcomings created by this assignment to mainshocks or swarms can be removed by comparing the results corresponding to elapsed times and interevent distances between consecutive events. Additionally, the Buishand test, which is used to verify the statistical significance of the detected peaks, also discriminates between mainshocks of notable seismic magnitude and swarms of earthquakes with moderate magnitude. The obtained results, based on the multifractal structure of the seismic activity, could also represent some advances in predicting, with sufficient time, forthcoming mainshocks of high magnitude and mitigate their destructive effects.
CitationMonterrubio, M. [et al.]. Evolution of the multifractal parameters along different steps of a seismic activity: The example of Canterbury 2000–2018 (New Zealand). "AIP advances", 5 Novembre 2020, vol. 10, núm. 11, article 115109, p. 11-14. 
URIhttp://hdl.handle.net/2117/331667
DOI10.1063/5.0010103
ISSN2158-3226
Publisher versionhttps://aip.scitation.org/doi/10.1063/5.0010103
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  • Departament de Física - Articles de revista [1.714]
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  • CPSV - Centre de Política de Sòl i Valoracions - Articles de revista [125]
  • Computer Applications in Science & Engineering - Articles de revista [216]
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