HR: 0800h
AN: NG31A-0868    [Abstracts]
TI: On-off intermittency in earthquakes occurrence
AU: * Bottiglieri, M
EM: milena.bottiglieri@unina2.it
AF: Seconda Universit… di Napoli - Dep. of environmental Sciences, Via Vivaldi 43, Caserta, 81100 Italy
AU: Godano, C
EM: cataldo.godano@unina2.it
AF: Seconda Universit… di Napoli - Dep. of environmental Sciences, Via Vivaldi 43, Caserta, 81100 Italy
AB: The intermittent behaviour is characterized by no sharp transition from an equilibrium quiescent state (laminar phase) to an active state(burst). When the mechanism of transition is driven by some control parameters, the intermittency is called on-off intermittency. This is characterized by some universal statistical properties. Here we show that the occurrence of earthquake clusters could be viewed as the bursts of activity of an on-off intermittent phenomenon. This interpretation is unfortunately not universal in the case of earthquakes because it depends by the choice of a rate of occurrence threshold. The value of this threshold could influence the transition to a chaotic behaviour.
DE: 7223 Seismic hazard assessment and prediction
DE: 3240 Chaos
SC: Nonlinear Geophysics [NG]
MN: 2004 AGU Fall Meeting