https://www.pro-7.co.jp/en/disaster-prevention/magnitude-and-jma-seismic-intensity-scale/
Earthquake Magnitude vs JMA Seismic Intensity Scale | Pro7
Sep 30, 2026 - What is the difference between earthquake magnitude and the JMA Seismic Intensity Scale? Learn how Japan evaluates earthquake strength and ground shaking levels
jma seismic intensityearthquake magnitudescale