eprintid: 1155
rev_number: 7
eprint_status: archive
userid: 6
dir: disk0/00/00/11/55
datestamp: 2012-02-23 10:16:47
lastmod: 2013-11-20 14:18:23
status_changed: 2012-02-23 10:16:47
type: article
metadata_visibility: show
creators_name: Caldarelli, Guido
creators_id: guido.caldarelli@imtlucca.it
title: Cellular models for river networks
ispublished: pub
subjects: GE
subjects: QC
divisions: EIC
full_text_status: none
keywords: PACS: 05.40.-a, 68.70.+w

abstract: 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.
date: 2001-01
date_type: published
publication: Physical Review E
volume: 63
number: 2
publisher: American Physical Society
id_number: 10.1103/PhysRevE.63.021118
refereed: TRUE
issn: 1539-3755
official_url: http://dx.doi.org/10.1103/PhysRevE.63.021118
related_url_url: http://arxiv.org/abs/cond-mat/0011086
citation:   Caldarelli, Guido  Cellular models for river networks.  Physical Review E, 63 (2).   ISSN 1539-3755      (2001)