Long-range correlations in two-dimensional spatio-temporal seismic fluctuations (Articolo in rivista)

Type
Label
  • Long-range correlations in two-dimensional spatio-temporal seismic fluctuations (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.physa.2006.10.092 (literal)
Alternative label
  • Telesca L; Lovallo M; Lapenna V; Macchiato M (2007)
    Long-range correlations in two-dimensional spatio-temporal seismic fluctuations
    in Physica. A (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Telesca L; Lovallo M; Lapenna V; Macchiato M (literal)
Pagina inizio
  • 279 (literal)
Pagina fine
  • 284 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1016/j.physa.2006.10.092, (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 377 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Inst Methodol Environm Anal, Tito, Italy Univ Naples Federico II, INFM, Dipartimento Sci Fis, Naples, Italy (literal)
Titolo
  • Long-range correlations in two-dimensional spatio-temporal seismic fluctuations (literal)
Abstract
  • We analysed the scaling behaviour of the two-dimensional (2-D) sequence (Delta s, Delta t) of the 1981-1998 southern California seismicity, where Delta s is the distance between two consecutive earthquakes (jump) and Delta t is their interevent interval. The 2-D seismic spatio-temporal fluctuations were investigated by means of the detrended fluctuation analysis (DFA), well-known methodology used to detect scaling behaviour in observational time series possibly affected by nonstationarities. The estimated scaling exponents alpha(DFA), larger than 0.5, indicate the presence of persistent long-range correlations in the 2-D sequence analysed. The variation of the scaling exponent with the increase of threshold magnitude shows a two-fold behaviour: in the range between 1.5 (the completeness magnitude of the catalog) and 3.0, the scaling exponent is quite constant and denoting a flicker-noise dynamics; while for magnitudes larger than 3.0 it decreases with the increase of magnitude, indicating a tendency toward a 2-D space-time Poissonian process for large events. (literal)
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