Scaling and correlations in the dynamics of forest-fire occurrence

Details Scaling and correlations in the dynamics of forest-fire occurrence Scaling and correlations in the dynamics of forest-fire occurrence

2007-05-18

arxiv.org/abs/0705.2721v1

Physics

Geophysics

Not a long paper, but many figures (but no large size in kb)

Scientific paper

10.1103/PhysRevE.77.016101

Forest-fire waiting times, defined as the time between successive events above a certain size in a given region, are calculated for Italy. The probability densities of the waiting times are found to verify a scaling law, despite that fact that the distribution of fire sizes is not a power law. The meaning of such behavior in terms of the possible self-similarity of the process in a nonstationary system is discussed. We find that the scaling law arises as a consequence of the stationarity of fire sizes and the existence of a non-trivial ``instantaneous'' scaling law, sustained by the correlations of the process.

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