%V 55
%I American Physical Society
%T Randomly pinned landscape evolution
%P R4865-R4868
%N 5
%R 10.1103/PhysRevE.55.R4865
%J Physical Review E
%X A simple scheme for the evolution of a fluvial landscape in heterogeneous environments is critically examined to capture the essential mechanism responsible for the recurrent scale-free landforms in the river basin. It is shown that, regardless of boundary and initial conditions, geomorphological constraints in the form of quenched randomly pinned regions play a key role in the robust emergence of aggregation patterns with a scaling behavior in agreement with that of real river basins. 
%L eprints1178
%D 1997
%A Guido Caldarelli
%A Achille Giacometti
%A Amos Maritan
%A Ignacio Rodriguez-Iturbe
%A Andrea Rinaldo
%K PACS: 05.40.+j, 68.70.+w