I. Seismic Intensity Scale

Forget the Richter scale, Tokyo’s Minato Ward has a far more helpful and amusing scale for judging earthquake intensity, their Seismic Intensity Scale.

This scale could probably be used to measure intoxication…with similar results.

Earthquake scale Japan Minato ward

Scale zero is pretty self-explanatory. Not sure I follow the graphic, though.

Earthquake scale Japan Minato ward - Scale 0

Earthquake scale Japan Minato ward - Scale 1

Earthquake scale Japan Minato ward - Scale 2

Earthquake scale Japan Minato ward - Scale 3

Earthquake scale Japan Minato ward - Scale 4

Earthquake scale Japan Minato ward - Scale 5

Earthquake scale Japan Minato ward - Scale 5 upper

“People have difficulty standing still.”

Earthquake scale Japan Minato ward - Scale 6 lower

A.k.a nomohodai 飲み放題 stage (all-you-can-drink stage):

Earthquake scale Japan Minato ward - Scale 6 upper

Earthquake scale Japan Minato ward - Scale 7I believe this scale is a version of the Japan Meteorological Agency Seismic Intensity Scale 気象庁震度階級, aks the JMA intensity scale, or Shindo 震度 for short, which means ‘seismic intensity’. You can check out the JMA website, which includes the following graphic:

II. Mercalli earthquake scale

This scale is similar to the Mercalli intensity scale メルカリ震度階級, which measures the effects of an earthquake on a 10 or 12-point scale.

Here’s another one from Shimane Prefecture (PDF):

Here’s a comparison of the Mercalli scale to the Richter scale (source):

Mercalli vs. Richter earthquake scale comparison.jpg

See also:

Another intensity scale I recently found..

And a comment about this scale from a Setagaya, Tokyo native…

See also:

shutoken-greater-tokyo-area-capital-area-disaster-prevention-website

And the importance of a longbar 長尺バール in assisting after an earthquake (source):

longbar-earthquake-tool

On a related note, a chart about Tsunami strength:

 

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