Articles | Volume 5, issue 5
Nat. Hazards Earth Syst. Sci., 5, 673–677, 2005
https://doi.org/10.5194/nhess-5-673-2005

Special issue: Seismic hazard evaluation, precursory phenomena and seismo...

Nat. Hazards Earth Syst. Sci., 5, 673–677, 2005
https://doi.org/10.5194/nhess-5-673-2005

  09 Sep 2005

09 Sep 2005

Multifractal variability in geoelectrical signals and correlations with seismicity: a study case in southern Italy

L. Telesca, G. Colangelo, and V. Lapenna L. Telesca et al.
  • Institute of Methodologies for Environmental Analysis, CNR, C. da S. Loja, 85050 Tito (PZ), Italy

Abstract. Multifractal fluctuations in the time dynamics of geoelectrical data, recorded in a seismic area of southern Italy, have been revealed using the Multifractal Detrended Fluctuation Analysis (MF-DFA), which allows to detect multifractality in nonstationary signals. Our findings show that the geoelectrical time series, recorded in the seismic area of southern Apennine Chain (Italy), is multifractal. The time evolution of the multifractality suggests that the multifractal degree increases prior the occurrence of earthquakes. This study aims to propose another approach to investigate the complex dynamics of earthquake-related geoelectrical signals.

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