Paper
Aftershocks Distributions in a Modified Olami-Feder-Christensen Model
- Authors:
- Hui Yin; Shenghu Wu; Sichuan Li; Chunqiong Liu; Kai Shi
- Abstract
- We introduce a stress decay process into a continuous cellular automaton version of the Olami-Feder-Christensen model of earthquakes. The most important model parameter is the decay level of non-conservation during local stress redistribution. In particular, the Gutenberg-Richter and Omori laws for aftershocks sequences can be reproduced synchronously by this model simulation. The simple toppling mechanism of this modified model is sufficient to account for the clustering of real aftershocks. The self-organized criticality properties of the model are discussed. The high correspondence of the simulated results to observations supports the hypothesis that fault systems are in a state of self-organized criticality. At the same time, our work suggests that the occurrence of self-organized criticality depends, at least in part, on the decay dynamics of the non-conservation.
- Keywords
- Aftershock; Self-organized Criticality; Gutenberg-Richter Law; Omori Law; OFC Earthquake Model
- StartPage
- 205
- EndPage
- 210
- Doi