Pyroclastic flows modelling using cellular automata |
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| Affiliation: | 1. University of Calabria, Department of Mathematics & High-Performance Computing Center, Arcavacata, 87036 Rende (CS), Italy;2. University of Calabria, Department of Earth Sciences & High-Performance Computing Center, Arcavacata, 87036 Rende (CS), Italy;1. The James Hutton Institute, Craigiebuckler, Aberdeen AB15 8QH, UK;2. Department of Geography & Environmental Sciences, University of Reading, Whiteknights, Reading RG6 6DW, UK;1. Analytical Division, Faculty of Chemistry, University of Mazandaran, Postal Code 47416-95447, Babolsar, Iran;2. Faculty of Chemistry, University of Mazandaran, Babolsar, Iran;1. Institute of Ecology and Earth Sciences, Department of Geology, Faculty of Science, University of Tartu, Ravila Str. 14A, Tartu EE50411, Estonia;2. Faculty of Geography and Earth Sciences, University of Latvia, Alberta Str. 10, Riga LV1586, Latvia;1. State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China;2. Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA;1. Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 Kings College Road, Toronto, Ontario M5S 3G4, Canada;2. Department of Applied Physics and Materials Science, California Institute of Technology Pasadena, CA 91106, USA |
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| Abstract: | Cellular automata (CA) and derived computational paradigms represent an alternative approach to differential equations to model and simulating complex fluid dynamical systems, whose evolution depends on the local interactions of their constituent parts. A new notion of CA was developed according to an empirical method for modelling macroscopic phenomena; its application to PYR, a CA model for simulating pyroclastic flows, generated PYR2, which permitted an improvement of the model and a more efficient implementation. PYR2 was utilised for the 1991 eruption of Mt. Pinatubo in the Philippines islands and for the 1996 eruption of the Soufriere Hills in the Montserrat Island. Results of the simulations are satisfactory if the comparison between real and simulated event is performed, considering the area involved by the event and the variations of thickness of the deposit, as generated by collapsing volcanic columns. |
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