Japan experiences about 1,000 earthquakes each year of a magnitude sufficient to be felt. While the rest of the world uses the Richter scale to measure earthquakes, the Japan Meteorological Agency uses a seismic intensity scale - used also in Taiwan - known as the shindo (literally 'tremor') scale. Whereas the Richter scale measures a quake at its epicenter, the 'shindo scale' measures it at a specific location where the quake is felt. Therefore the effects of a single earthquake have a variable 'shindo scale' reading depending how far the affected area is from the epicenter.
A Shindo Scale 1 quake is the lightest, while a 7 is the most severe.
In detail, the points on the scale are defined as follows:
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