Abstract
After the Great East Japan Earthquake, research and development on the massive tsunami countermeasures technology with high resilience is under way. The massive tsunami continued for several tens of minutes, and the water level and flow velocity changed over time complicatedly. For this reason, it has been difficult to make a massive tsunami in the experimental flume. The authors are developing a new tsunami generator using the electric sluice gate that can control the flow rate continuously. In this research, we tried reproducing the tsunami waveform of the Great East Japan Earthquake and control the dispersion wave by controlling the opening and closing speed of the electric gate.