Automatic Recognition of Seismic Intensity Based on RS and GIS: A Case Study in Wenchuan Ms8.0 Earthquake of China

Table 1

Standard of seismic intensity division.

Seismic; intensity	Condition of building collapse			Mean damage index	Earth’s surface status
	Concrete	Multilayer brick	General houses
VII	0.00	5.47%	6.00%	0.11–0.30	Soft land is cracked; most detached brick chimneys are moderately damaged; riverbank is collapsed.
VIII	0.00	12.91%	15.00%	0.31–0.50	Hard land is cracked; most detached brick chimneys are seriously damaged.
IX	5.40%	25.86%	33.00%	0.51–0.70	Hard land is cracked; most detached brick chimneys are collapsed; bed rock is cracked; landslide occurs.
X	24.73%	50.79%	88.00%	0.71–0.90	Landslide and rupture appear; most detached brick chimneys are collapsed from the root; bedrock arch is destroyed.
XI	50.00%	80.00%	95.00%	0.91–1.00	The earthquake ruptures continue long; a large number of landslides occur.