Volume 81, Number 6, March 2008
|Number of page(s)||5|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||22 February 2008|
Long-term memory in earthquakes and the distribution of interoccurrence times
Institut für Theoretische Physik III, Justus-Liebig-Universität Giessen - 35392 Giessen, Germany
2 School of Environmental Sciences, University of East Anglia - Norwich, NR4 7TJ, UK
3 Minerva Center and Department of Physics, Bar-Ilan University - Ramat-Gan 52900, Israel
Corresponding author: email@example.com
Accepted: 24 January 2008
We study seismic records in regimes of stationary seismic activity in Northern and Southern California. Our analysis suggests that the earthquakes are long-term power law correlated with a correlation exponent γ close to 0.4. We show explicitly that the long-term correlations can explain both the fluctuations of magnitudes and interoccurrence times (between events above a certain magnitude M) and, without any fit parameter, the scaling form of the distribution function of the interoccurrence times in the seismic records, recently obtained by Corral (Phys. Rev. Lett., 92 (2004) 108501).
PACS: 91.30.Ab – Theory and modeling, computational seismology / 89.75.Da – Systems obeying scaling laws / 95.75.Wx – Time series analysis, time variability
© EPLA, 2008
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