Abstract
The Great East Japan Earthquake on Mar. 11, 2011 in Japan was extremely huge and brought us enormous damage. In that earthquake, a lot of faults north and south were destroyed successively. Though many numerical models of earthquakes have been proposed, they are all inappropriate for many faults breakdown. Thus in this paper, a simple but interactive coupled stick-slip model based on 2-dimensional Burridge-Knopoff model is proposed. The emergence of catastrophic earthquakes can be found in our simulation. In addition multifractal analysis of earthquake data gives us new interpretation of earthquakes and the possibility of the prediction of catastrophic earthquake.