%0 Journal Article
%@ 1539-3755
%A Caldarelli, Guido
%A Giacometti, Achille
%A Maritan, Amos
%A Rodriguez-Iturbe, Ignacio
%A Rinaldo, Andrea
%D 1997
%F eprints:1178
%I American Physical Society
%J Physical Review E
%K PACS: 05.40.+j, 68.70.+w  
%N 5
%P R4865-R4868
%T Randomly pinned landscape evolution
%U http://eprints.imtlucca.it/1178/
%V 55
%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.