In the electrochemical system with liquid-liquid interface, intense lo
cal convections by the resonance with potential pulses take place. The
refore, with laser beam scattering, temporal movement of the water-mer
cury interface was observed. As a result, the scattering efficiency sh
owed non-linear oscillation. Such non-linear response could be control
led by potential pulse height. As the potential height was increased,
new scattering peaks in the oscillation emerged, which was expected of
a kind of bifurcation phenomenon. From these results, phase portrait,
Poincare section, correlation dimension of the strange attractor and
the largest Lyapunov exponent of the trajectories were obtained. Conse
quently, it was concluded that all the parameters indicate chaotic beh
avior of the resonance flow.