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Phys. Rev. Lett. 70, 822–825 (1993)

Self-organized fractal river networks

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A. Rinaldo, I. Rodriguez-Iturbe, R. Rigon, E. Ijjasz-Vasquez, and R. L. Bras
Istituto di Idraulica ‘‘G. Poleni,’’ Università di Padova, via Loredan 20, I-35131 Padova, Italy
Instituto Internacional de Estudios Avanzados, P.O. Box 17606, Caracas, Venezuela
Ralph M. Parsons Laboratory, Massachusetts Insitute of Technology, Cambridge, Massachusetts 02139

Received 31 August 1992; published in the issue dated 8 February 1993

Optimal channel networks (OCN’s) obtained by minimizing the local and global rates of energy expenditure evolve automatically from arbitrary initial conditions to network configurations exhibiting fractal and multifractal statistics indistinguishable from those observed in nature. It is suggested that OCN’s are spatial models of self-organized criticality and that natural fractal structures like river networks may arise as a joint consequence of optimality and randomness.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.822
DOI:
10.1103/PhysRevLett.70.822
PACS:
64.60.Ht, 68.70.+w, 92.40.Fb, 92.40.Gc