TY - JOUR VL - 55 PB - American Physical Society A1 - Caldarelli, Guido A1 - Giacometti, Achille A1 - Maritan, Amos A1 - Rodriguez-Iturbe, Ignacio A1 - Rinaldo, Andrea SP - R4865 Y1 - 1997/// JF - Physical Review E IS - 5 ID - eprints1178 EP - R4868 SN - 1539-3755 N2 - 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. KW - PACS: 05.40.+j KW - 68.70.+w TI - Randomly pinned landscape evolution AV - none UR - http://dx.doi.org/10.1103/PhysRevE.55.R4865 ER -