Universal Earthquake-Occurrence Jumps, Correlations with Time, and Anomalous Diffusion

Details Universal Earthquake-Occurrence Jumps, Correlations with Time, and Anomalous Diffusion Universal Earthquake-Occurrence Jumps, Correlations with Time, and Anomalous Diffusion

2006-02-21

arxiv.org/abs/cond-mat/0602490v1

Physics

Condensed Matter

Statistical Mechanics

Short paper

Scientific paper

10.1103/PhysRevLett.97.178501

Spatiotemporal properties of seismicity are investigated for a worldwide (WW) catalog and for Southern California in the stationary case (SC), showing a nearly universal scaling behavior. Distributions of distances between consecutive earthquakes (jumps) are magnitude independent and show two power-law regimes, separated by jump values about 200 km (WW) and 15 km (SC). Distributions of waiting times conditioned to the value of jumps show that both variables are correlated in general, but turn out to be independent when only short or long jumps are considered. Finally, diffusion profiles reflect the shape of the jump distribution.

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