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Japan Meterological Agency (JMA) Intensity Scale
0 --- No sensation: registered by seismographs but no perception
by the human body.
1 --- Slight: felt by persons at rest or persons especially sensitive to earthquakes.
2 --- Weak: felt by most persons; slight rattling of doors and Japanese latticed
paper sliding doors (shoji).
3 --- Rather strong: shaking of houses and buildings; heavy rattling of doors and shoji, swinging of chandeliers and other hanging objects; movement of liquids in vessels.
4 --- Strong: strong shaking of houses and buildings; overturning of unstable objects; spilling of liquids out of vessels four-fifths full. Felt also by people walking. Many people go out of their house.
5 --- Very strong: cracking of plaster walls; overturning of tombstones and stone lanterns; damage to masonry chimneys and mud-plastered warehouses.
6 --- Disastrous: demolition of up to 30% of Japanese wooden houses; numerous landslides and embankment failures; fissures on flat ground. Most people cannot stand.
7 --- Ruinous : demolition of more than 30% of Japanese wooden houses. Landslides occur, the ground cracks or faults are caused by the earthquake
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