Simulating Urban Networks through Multiscalar Space-Time Dynamics: Europe and the United States, 17th-20th Centuries

Anne Bretagnolle and Denise Pumain
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Anne Bretagnolle: University Paris 1 and CNRS, UMR, Géographie-cités (équipe PARIS), Geography, 13 rue du Four, Paris 75006, France, anne.bretagnolle@parisgeo.cnrs.fr
Denise Pumain: University Paris 1 and CNRS, UMR, Géographie-cités (équipe PARIS), Geography, 13 rue du Four, Paris 75006, France, pumain@parisgeo.cnrs.fr

Urban Studies, 2010, vol. 47, issue 13, 2819-2839

Abstract: Simpop2 is a generic multi-agent model designed for simulating any system of cities. From an evolutionary theory built upon the observation of networks of cities in different parts of the world and over long time-periods, it has been possible to identify stylised facts that characterise their main features and properties. This paper presents data-oriented simulations of two kinds of system: in early settled countries (Europe, 1300—2000) and in countries more recently settled (the United States, 1650—2000). The model can simulate properly the general dynamics of urban systems, at different scales of observation (general configuration and trajectories of individual cities). The simulations help to identify some dynamic properties that are shared by both systems: a general growth trend and spatial expansion (produced through interurban competition which generates emulation towards innovation that explain the persistency of the hierarchical configuration); a dramatic increase of contrasts in city sizes since the first industrial revolution linked to the increase of communication speed; and, a differentiation of urban economic functions produced through interactions between cities and innovation cycles, as industrial revolution. The model also puts forward the necessary integration of a new urban function in the model, which represents the early emergence of global cities. Yet, beyond these similarities in the evolution of all urban systems, when they are fully integrated, the model also measures to what extent the observed peculiarities in their contemporary spatial and functional configuration depend on differences in the early space-filling process between the two kinds of system.

Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:sae:urbstu:v:47:y:2010:i:13:p:2819-2839

DOI: 10.1177/0042098010377366

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