TUNNEL CRISIS AND THE CRISIS-INDUCED INTERMITTENCY

In this paper a different type of crisis in random map is studied. The trigger of this crisis is the tunnel effect induced by a backward tan gent bifurcation, while the previously reported crises are all caused by the collision of the chaotic attractor with an unstable orbit. In s tudying the intermittency behaviors induced by the crisis, two differe nt characteristic times an defined. The scaling laws of the characteri stic times are calculated numerically. Comparing the present crisis wi th the previously reported cases, the difference between their mechani sms is shown. Corresponding to this difference, two groups of crises a re classified.