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Self-Organised Criticality in the Drossel-Schwabl Forest Fire Model
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

As self-organised criticality is a relatively new and undiscovered field of study, it is of great interest to further determine the behaviour of self-organised critical systems. In this report, the two-dimensional Drossel-Schwabl forest fire model is introduced and theoretically examined, in order to explain the properties of self-organised criticality. Thereafter, the results of simulations are presented, with critical exponents very close to the derived values of earlier studies. The presence of power laws in the model is discussed, as well as their implications of self-organised behaviour in both theoretical and real forest fires.

Abstract [sv]

Eftersom självorganiserad kritikalitet är ett relativt nytt och outforskatämnes område är det av stort intresse att ytterligare studera beteendet hos självorganiserade kritiska system. Denna rapport introducerar den tvådimensionella Drossel-Schwablskogsbrandsmodellen och undersöker den på ett teoretiskt plan, för att förklara självorganiserad kritikalitet som koncept. Därefter presenteras simuleringsresultat i form av kritiska exponenter, vars värden stämmer bra överens med tidigare studier. Potensberoenden i modellen diskuteras, liksom hur de implicerar självorganiserat beteende i teoretiska såväl som riktiga skogsbränder.

Place, publisher, year, edition, pages
2015.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-168082OAI: oai:DiVA.org:kth-168082DiVA: diva2:814250
Available from: 2015-05-26 Created: 2015-05-26 Last updated: 2015-05-26Bibliographically approved

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