Simulation of the Burridge-Knopoff model of earthquakes with variable range stress transfer.
Simulation of the Burridge-Knopoff model of earthquakes with variable range stress transfer.
复制标题
DOI：
10.1103/physrevlett.95.248501
复制
发表时间：
2005-07
影响因子：
8.6
通讯作者：
J. Xia;H. Gould;W. Klein;J. Rundle
中科院分区：
文献类型：
--
作者：
J. Xia;H. Gould;W. Klein;J. Rundle
地震断层的简单模型对于理解其观测行为的机制非常重要，如古腾堡-里氏标度和大小事件之间的关系，这是各种预测方法的基础。尽管元胞自动机模型已经在远程应力传递极限方面进行了广泛的研究，但Burridge-Knopoff模型还没有研究这一极限，因为Burridge-Knopoff模型包含更现实的摩擦力和惯性。我们发现后一种具有远程应力传递的模型与远程元胞自动机模型和通常的具有最近邻弹簧的Burridge-Knopoff模型在质量上表现出不同的行为，这取决于速度减弱摩擦力的性质。这些结果对我们理解地震和其他驱动耗散系统具有重要意义。
Simple models of earthquake faults are important for understanding the mechanisms for their observed behavior, such as Gutenberg-Richter scaling and the relation between large and small events, which is the basis for various forecasting methods. Although cellular automaton models have been studied extensively in the long-range stress transfer limit, this limit has not been studied for the Burridge-Knopoff model, which includes more realistic friction forces and inertia. We find that the latter model with long-range stress transfer exhibits qualitatively different behavior than both the long-range cellular automaton models and the usual Burridge-Knopoff model with nearest-neighbor springs, depending on the nature of the velocity-weakening friction force. These results have important implications for our understanding of earthquakes and other driven dissipative systems.