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Cellular models for river networks

Caldarelli, Guido Cellular models for river networks. Physical Review E, 63 (2). ISSN 1539-3755 (2001)

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A cellular model introduced for the evolution of the fluvial landscape is revisited using extensive numerical and scaling analyses. The basic network shapes and their recurrence especially in the aggregation structure are then addressed. The roles of boundary and initial conditions are carefully analyzed as well as the key effect of quenched disorder embedded in random pinning of the landscape surface. It is found that the above features strongly affect the scaling behavior of key morphological quantities. In particular, we conclude that randomly pinned regions (whose structural disorder bears much physical meaning mimicking uneven landscape-forming rainfall events, geological diversity or heterogeneity in surficial properties like vegetation, soil cover or type) play a key role for the robust emergence of aggregation patterns bearing much resemblance to real river networks.

Item Type: Article
Identification Number: 10.1103/PhysRevE.63.021118
Uncontrolled Keywords: PACS: 05.40.-a, 68.70.+w
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QC Physics
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 23 Feb 2012 10:16
Last Modified: 20 Nov 2013 14:18
URI: http://eprints.imtlucca.it/id/eprint/1155

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