A new approach to investigate the correlation between geoelectrical time fluctuations and earthquakes in a seismic area of southern Italy

We propose a new approach to investigate the possible correlation between electrical signals and earthquakes. Good correlation has been found between the spectral power-law exponent of geoelectrical signals and the Hurst exponent of the seismicity of the area investigated. A tendency of both parameters to converge toward unity, typical of self-organized critical dynamics, is evident before the occurrence of the major event recorded in the area during the observation period.

[1]  Stephen K. Park.  Monitoring resistivity change in Parkfield, California: 1988–1995 , 1997 .

[2]  D. Boyer,et al.  Characteristics of electromagnetic noise in the Ioannina Region (Greece); A possible origin for so called “seismic electric signal” (SES) , 1998 .

[3]  S. Uyeda,et al.  Geoelectric potential changes: possible precursors to earthquakes in Japan. , 2000, Proceedings of the National Academy of Sciences of the United States of America.

[4]  Maria Macchiato,et al.  Identifying space–time clustering properties of the 1983–1997 Irpinia–Basilicata (Southern Italy) seismicity , 2001 .

[5]  L. Telesca,et al.  Stochastic behaviour and scaling laws in geoelectrical signals measured in a seismic area of southern Italy , 1999 .

[6]  P. Glover,et al.  Streaming potential in porous media: 1. Theory of the zeta potential , 1999 .

[7]  Y. Kagan,et al.  Earthquakes Cannot Be Predicted , 1997, Science.

[8]  R. Evans.  Assessment of schemes for earthquake prediction: Editor's introduction , 1997 .

[9]  N. Lomb.  Least-squares frequency analysis of unequally spaced data , 1976 .

[10]  Masashi Hayakawa,et al.  Fractal analysis of ULF geomagnetic data associated with the Guam Earthquake on August 8, 1993 , 1999 .

[11]  J. Martí,et al.  Analysis of the Temporal Occurrence of Seismicity at Deception Island (Antarctica). A Nonlinear Approach , 1997 .

[12]  Yan Y. Kagan,et al.  Statistical tests of VAN earthquake predictions: Comments and reflections , 1996 .

[13]  Kiyohumi Yumoto,et al.  ULF electromagnetic precursors for an earthquake at Biak, Indonesia on February 17, 1996 , 2000 .

[14]  M. Johnston,et al.  Review of Electric and Magnetic Fields Accompanying Seismic and Volcanic Activity , 1997 .

[15]  Gianluca Valensise,et al.  Faulting mechanism and complexity of the November 23, 1980, Campania-Lucania Earthquake, inferred from surface observations , 1990 .

[16]  Filippos Vallianatos,et al.  Identification and discrimination of transient electrical earthquake precursors: fact, fiction and some possibilities , 2000 .

[17]  H. Vincent Poor,et al.  Signal detection in fractional Gaussian noise , 1988, IEEE Trans. Inf. Theory.

[18]  C. Marone,et al.  Geoelectric signals in China and the earthquake generation process , 1996 .