For a visual representation of what this means, the Japanese Meteorological Agency has this useful graphic (click to enlarge):
And here it is in text:
JMA Seismic Intensity Scale
Nobody feels the tremor.
Some people indoors may feel a slight tremor.
Many people indoors feel the tremor. Hanging fixtures, such as lights, may slightly shake.
Most people indoors feel the tremor. Electrical wires may slightly shake.
Hanging fixtures shake considerably and dishes in the cupboard may rattle.
Many people feel the need to plan for safety. Dishes in the cupboard and books in the shelves may fall. Items that are not supported well may fall.
There is a sense of extreme danger. Heavy furniture, such as bureaus, may fall over. Many brick walls that are not supported well may topple.
People cannot maintain a standing position. Furniture that is not secured may move or topple over. Many doors will not open. Window glass of buildings will break and fall down.
Impossible to move without crawling. Furniture that is not secured may move or topple over. Most brick walls that are not supported well ill fall.
Unable to move or act by will. Most furniture will move, and some may seem to fly.
More detailed information about the effect on buildings etc can be found on the JMA site.
Shindo scale is really useful. I love this graphic, though the distress on the people's faces is instense! Oh, man. Poor little earthquake people :(ReplyDelete