This study was devoted to the investigation of the shock-induced intensification of the turbulent mixing zone. Our data were compared with those reported by the authors from the United States and France. The experiments were performed in a shock tube of square section filled with the two gases, which were separated with a thin lavsan film. The working gases were helium, argon, krypton, xenon, and their combinations. This allowed us to perform the studies for the Atwood numbers ranging from 0.095 to 0.91 in magnitude. The incident shock wave passed from light to heavy gas and vice versa. The initial pressure of 0.5 atm and Mach number of the incident shock wave 3% were chosen as the working parameters because under these conditions the experimental x, t-diagram coincided with the calculated x, t-diagram within the 3% experimental error. The process was visualized by the Schlieren method with the IAB-451 device using continuous recording or recording in frames. We studied the shock-induced intensification of the turbulent zone, the effect of initial conditions on this intensification, and the influence of the turbulent zone on the intensification of the shock passed through the zone.