Table 4 The number and density of secondary landslides associated with historical earthquakes.

From: Lethality level casualty assessment method for earthquake landslide hazards based on the expansion effect of the mortality rate

Earthquake

Attributes

Intensity

  

VI

VII

VIII

IX

X

XI

Wenchuan, Sichuan

Number of landslides (pieces)

29

571

827

892

765

498

Landslide density (pieces/km2)

0.001

0.007

0.131

0.13

0.3

0.432

Population (person)

76,688,578

26,888,769

4,227,933

1,118,141

139,371

167,259

Intensity area (km2)

314,906

84,449

27,786

7738

3144

2419

Population density (person/km2)

243.5285

318.4025

152.1605

144.5

44.3292

69.14386

Yushu, Qinghai

Number of landslides (pieces)

48

76

58

161

  

Landslide density (pieces/km2)

0.05

0.1

0.68

1.23

  

Population (person)

78,504

34,150

27,575

11,143

  

Intensity area (km2)

22,423

7030

992

  

Population density (person/km2)

5.024038

3.922475

11.23286

  

Yiliang, Yunnan

Number of landslides (pieces)

33

63

57

   

Landslide density (pieces/km2)

0.02

0.09

0.22

   

Population (person)

948,797

197,557

32,919

   

Intensity area (km2)

2642

792

263

   

Population density (person/km2)

359.1207

249.4407

125.1673

   

Lushan, Sichuan

Number of landslides (pieces)

273

365

384

151

  

Landslide density (pieces/km2)

0.021

0.091

0.271

0.726

  

Population (person)

1,711,672

596,746

383,779

53,196

  

Intensity area (km2)

13,059

4078

1424

211

  

Population density (person/km2)

131.0722

146.333

269.5077

252.1137

  

Minxian-Zhangxian, Gansu

Number of landslides (pieces)

60

90

154

  

Landslide density (pieces/km2)

0.004964

0.024725

0.21813

   

Population (person)

1,112,831

414,151

66,422

   

Intensity area (km2)

12,086

3640

706

   

Population density (person/km2)

92.07604

113.7777

94.08215

   

Ludian, Yunnan

Number of landslides (pieces)

235

197

192

99

  

Landslide density (pieces km2)

0.04

0.12

0.66

1.1

  

Population (person)

1,407,063

234,576

27,872

7737

  

Intensity area (km2)

8390

1580

290

90

  

Population density (person/km2)

167.7072

148.4658

96.11034

85.96667

  

Jiuzhaigou, Sichuan

Number of landslides (pieces)

20

69

138

45

  

Landslide density (pieces/km2)

0.011

0.027

0.18

0.306

  

Population (person)

1,513,854

142,169

23,362

4006

  

Intensity area (km2)

14,006

3372

778

139

  

Population density (person/km2)

108.0861

42.16163

30.02828

28.82014

  
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