The JMA Scale goes from 0-7 with 0-0.4 being the weakest and 6.5 -7 (or higher) being the strongest.
Japan uses the Richter scale to measure earthquakes. This scale quantifies the energy released by an earthquake using a logarithmic scale from 1 to 10. In addition to the Richter scale, Japan also uses the Japan Meteorological Agency (JMA) seismic intensity scale to evaluate the intensity of shaking felt at specific locations.
8.9 on the Richter scale.
9.1 on the Richter Scale.
9.0
8.5
No, there was an earthquake which triggered a tsunami. The earthquake had a magnitude of 8.9 on the Richter scale.
The 2011 Tohoku earthquake measured 9.0 on the Richter scale.
japan a 7.1
8.9
8.9/10
4.3
8.9 on the Richter scale