What is the difference between earthquake intensity and earthquake level?What does intensity 9 degrees mean?

Today (September 11) the emergency management department officially posted information to the society. The highest intensity of the Sichuan Luding 6.8 earthquake is a degree (9 degrees).

It is understood that the earthquake intensity is strictly different from the earthquake magnitude. The earthquake -level represents the size of the earthquake itself. It is determined by the earthquake wave energy emitted by the earthquake.The earthquake intensity means that the influence of earthquakes on the surface and engineering buildings varies from place to the same earthquake. It is affected by various natural and human conditions, which can be interpreted as the degree of earthquakes and damage.

my country divides the earthquake into 12 intensity levels.Earthquake intensity (9 degrees) means that most of the houses of bricks (soil, stone) are mostly destroyed and severely damaged; a few destruction of housing in buckets of buckets, most severe destructionWith medium destruction, a few are slightly damaged; a few do not have a mixed brick -and -mixed -structure house destroyed, and most of them are severely damaged and medium destruction; a few of the housing of steel concrete frame structures are severely damaged, and most of the medium destruction and minor damage.Edit: Liu Yaxuan

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