Influence of Different Connectivity Topologies in Small World Networks Modeling Earthquakes**The project supported by National Natural Science Foundation of China under Grant Nos. 60074020 and 90203008 and the Doctoral Foundation of the Ministry of Education of China

Abstract

We introduce the Olami–Feder–Christensen (OFC) model on a square lattice with some “rewired” long-range connections having the properties of small world networks. We find that our model displays the power-law behavior, and connectivity topologies are very important to model's avalanche dynamical behaviors. Our model has some behaviors different from the OFC model on a small world network with “added” long-range connections in our previous work [LIN Min, ZHAO Xiao-Wei, and CHEN Tian-Lun, Commun. Theor. Phys. (Beijing, China) 41 (2004) 557.].