TY - JOUR
T1 - Statistical features of seismoelectric signals prior to M7.4 Guerrero-Oaxaca earthquake (México)
AU - Ramírez-Rojas, A.
AU - Flores-Mírquez, E. L.
AU - Guzmín-Vargas, L.
AU - Gílvez-Coyt, G.
AU - Telesca, L.
AU - Angulo-Brown, F.
PY - 2008/9/1
Y1 - 2008/9/1
N2 - In this paper a statistical analysis of seismoelectric ULF signals prior to the M7.4 Guerrero-Oaxaca earthquake (EQ) occurred at the Mexican Pacific coast on 14 September 1995, has been performed. The signals were simultaneously recorded at three monitoring stations from the last months of 1994 until July of 1996. The nonlinear time series methods of Higuchi fractal dimension (HFD) and detrended fluctuation analysis (DFA) have been used. In the three data sets we found some complex dynamical behaviors that seemingly reflect a relaxation-EQ preparation-main shock-relaxation process. In particular, clear spike-like anomalies in both DFA- and HFD-exponents some months before the main shock are revealed.
AB - In this paper a statistical analysis of seismoelectric ULF signals prior to the M7.4 Guerrero-Oaxaca earthquake (EQ) occurred at the Mexican Pacific coast on 14 September 1995, has been performed. The signals were simultaneously recorded at three monitoring stations from the last months of 1994 until July of 1996. The nonlinear time series methods of Higuchi fractal dimension (HFD) and detrended fluctuation analysis (DFA) have been used. In the three data sets we found some complex dynamical behaviors that seemingly reflect a relaxation-EQ preparation-main shock-relaxation process. In particular, clear spike-like anomalies in both DFA- and HFD-exponents some months before the main shock are revealed.
UR - http://www.scopus.com/inward/record.url?scp=52149109684&partnerID=8YFLogxK
U2 - 10.5194/nhess-8-1001-2008
DO - 10.5194/nhess-8-1001-2008
M3 - Artículo
SN - 1561-8633
VL - 8
SP - 1001
EP - 1007
JO - Natural Hazards and Earth System Science
JF - Natural Hazards and Earth System Science
IS - 5
ER -