Abstract
In order to distinguish between a local and a global bifurcation related to the temporal intermittency, a saddle-node bifurcation is numerically investigated in a fifth-order system of magnetoconvection. It is found that the fifth-order system exhibits not only the typical intermittent transition to chaos with the process of random reinjection into a regular motion but also a one-way transition from a laminar phase to chaos without the reinjection process, when a parameter is changed. The distribution of length of the laminar phase without the reinjection process shows −1 2 power law scaling near the threshold.
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