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| Titel |
A Real-Space Cellular Automaton Laboratory for the modeling of complex dunefields |
| VerfasserIn |
Olivier Rozier, Clement Narteau |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250077447
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| Zusammenfassung |
| Using applications in the physics of sand dunes, we explore the capabilities of a Real Space
Cellular Automaton Laboratory (ReSCAL), a generator of 3D stochastic cellular automaton
stochastic cellular automaton models with continuous time. The objective of this software is
to develop interdisciplinary research collaboration to investigate the dynamics of complex
systems. In the vast majority of numerical models, any point in space is entirely characterized
by a local set of physical variables (e. g. temperature, pressure, velocity) that are recalculated
over time according to some predetermined set of fundamental laws. However, there is not
always a satisfactory theoretical framework from which we can try to quantify the
overall dynamics of the system. For this reason, we prefer concentrate on features of
organization and ReSCAL is entirely constructed from a finite number of discrete
states that represent the different phases of matter involved in the system under
consideration. Then, an elementary cell is a real-space representation of the physical
environment. Pairs of nearest neighbor cells are called doublets and each individual
physical process is associated with a set of doublet transitions and a characteristic
transition rate. Using a modular approach, we show how it is possible to model and
combine a wide range of physical, chemical and/or anthropological processes. As an
example, we discuss different dune morphologies with respect to rotating wind
conditions. |
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