Fig. 4From: A short history of Japanese historical seismology: past and the presentRelationship between JMA seismic intensity scale and the modified Mercalli intensity scale (modified from Utsu 1966). Measured value in the middle is the output of the seismic intensity meter (e.g., JMA 2016). The output of the seismic intensity meter is up to one decimal place. The detailed explanation of the JMA seismic intensity scale in English is in JMA (2016)Back to article page