Propagation of extremes in space.
The propagation of extreme events in space is analyzed for a class of dynamical systems giving rise to spatiotemporal chaos. It is shown that this process can be mapped into a generalized random walk, whereby the mean square displacement increases linearly in time and there is a nonvanishing probability for jumps beyond first neighbors. The relative roles of the local dynamics and of the spatial coupling are identified.
Institut Royal Météorologique de Belgique, 3 Avenue Circulaire, 1180 Brussels, Belgium.
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Nicolis