This paper outlines the principles of cellular modelling in fluvial geomorphology and addresses issues of model formulation and validation in the context of numerical modelling more generally. In doing so it seeks to highlight the prospects
for using cellular approaches to develop an improved understanding of both rivers and models.
The application of cellular automata to the erosion of landforms
as the erosion of an initially smooth surface proceeds. A second approach uses a computational cellular method. The application of the cellular method to problems of geomorphological interest are discussed.
On transition rules of complex structures in one-dimensional cellular automata : some implications for urban change
The cellular automaton represents a hypothetical linear city as an analytic tool to investigate possible transition rules and to draw some implications for urban change.
This paper describes a new method to simulate river meandering within a cellular model (CAESAR). A novel technique for determining bend radius of curvature on a cell by cell basis is described, that importantly allows regional information on bend
, but the method illustrates how meandering can be integrated within a cellular framework. This demonstrates the potential to produce a single model that can incorporate both meandering and braiding.
Cellular automaton ; Dune ; Earth surface processes ; Geomorphology ; Model ; Stochastic model
The AA. present the Real-Space Cellular Automaton Laboratory (ReSCAL), a powerful and versatile generator of 3D stochastic models. The aim of this software suite, released under a GNU licence, is to develop interdisciplinary research collaboration
to investigate the dynamics of complex systems. The models in ReSCAL are essentially constructed from a small number of discrete states distributed on a cellular grid. An elementary cell is a real-space representation of the physical environment and pairs
Integrating spatial optimization and cellular automata for evaluating urban change
An optimisation based approach is developed for evaluating growth and change based upon spatial restrictions and impact thresholds. The spatial optimisation model is integrated with a cellular automata growth simulation process. Application results
Simulation of long-term soil redistribution by tillage using a cellular automata model
This study aims at developing a cellular automata model for tillage translocation (CATT) that can take into account such obstacles, exploring its possibilities and limitations. Simulations were performed to analyse the model behaviour in complex
landscapes, applying it to a field with protruding obstacles (representing olive trees). The model adequately represented some morphological features observed in actual olive orchards, such as mounds around the olive trees. The results show that cellular
Simulation of braided river flow using a new cellular routing scheme
Results are presented from a numerical simulation of two-dimensional flow patterns in a braided river using a simple cellular routing scheme. An assessment is made of the sensitivity of the routing scheme to variations in the values of its main
simple cellular automata models and may be suitable for use in modelling bedload transport and channel change in complex fluvial environments.
The AA. examine some of the detailed characteristics of this cellular computer model. They show the qualitative form of the braiding produced by the model is generally insensitive to changes in most of the numerical parameters used in the model
Assessing mutuality of change in soil and vegetation patch pattern characteristics by means of Cellular Automata simulation
Five landscape metrics were employed to characterize complementary soil and vegetation patterns of patches over a wide range of densities. These metrics were calculated for a large number of modeled patterns based on a Cellular Automata technique
A cellular model of Holocene upland river basin and alluvial fan evolution
In this paper the CAESAR (Cellular Automaton Evolutionary Slope And River) model is used to simulate the Holocene development of a small upland catchment and the alluvial fan at its base. The model operates at a 3 m grid scale and simulates every