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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 3 The linking between classes of landslide causative criteria and present landslide events by FR

From: Spatial implementation of frequency ratio, statistical index and index of entropy models for landslide susceptibility mapping in Al-Balouta river basin, Tartous Governorate, Syria

 

Parameter

Class

No. of landslide

% of landslide

No. of pixels in domain

% of domain

FR

SI

1

Slope (Degree)

0–5

12

3.59

43,627

5.86

0.61

− 0.49

  

5–10

41

12.28

119,918

16.10

0.76

− 0.27

  

10–15

71

21.26

163,382

21.93

0.97

− 0.03

  

15–20

71

21.26

175,950

23.62

0.90

− 0.11

  

20–25

71

21.26

121,309

16.28

1.31

0.27

  

25<

68

20.36

120,811

16.22

1.26

0.23

2

Slope aspect

Flat

0

0.00

1308

0.18

0.00

None

  

North

9

2.69

52,881

7.10

0.38

− 0.97

  

Northeast

13

3.89

56,363

7.57

0.51

− 0.66

  

East

22

6.59

45,126

6.06

1.09

0.08

  

Southeast

75

22.46

99,730

13.39

1.68

0.52

  

South

84

25.15

136,654

18.34

1.37

0.32

  

Southwest

41

12.28

98,417

13.21

0.93

− 0.07

  

West

35

10.48

92,398

12.40

0.84

− 0.17

  

Northwest

38

11.38

110,164

14.79

0.77

− 0.26

  

North

17

5.09

51,956

6.97

0.73

− 0.31

3

Curvatuer

Concave

112

33.53

280,770

37.69

0.89

− 0.12

  

Flat

79

23.65

179,517

24.10

0.98

− 0.02

  

Convex

143

42.81

284,710

38.22

1.12

0.11

4

Plan curvature

Concave

89

26.65

235,248

31.58

0.84

− 0.17

  

Flat

111

33.23

264,520

35.51

0.94

− 0.07

  

Convex

134

40.12

245,229

32.92

1.22

0.20

5

Profile curvature

Concave

122

36.52

248,078

33.30

1.10

0.09

  

Flat

118

35.32

250,650

33.64

1.05

0.05

  

Convex

94

28.14

246,269

33.06

0.85

− 0.16

6

Elevation

<200

3

0.89

8707

1.17

0.77

− 0.26

  

200–400

16

4.79

85,598

11.49

0.42

− 0.87

  

400–600

55

16.46

177,848

23.87

0.69

− 0.37

  

600–800

106

31.73

193,667

26.00

1.22

0.20

  

>800

154

46.10

279,177

37.47

1.23

0.21

7

NDVI

<0.1

1

0.299

4402

0.59

0.51

− 0.68

  

0.1–0.3

21

6.28

133,083

17.86

0.35

− 1.04

  

0.3–0.6

201

60.18

375,287

50.37

1.19

0.18

  

>0.6

111

33.23

232,225

31.17

1.07

0.06

8

Proximity to faults

<100

44

13.17

101,919

13.68

0.96

− 0.04

  

100–200

47

14.07

97,725

13.12

1.07

0.07

  

200–300

39

11.67

90,056

12.09

0.97

− 0.03

  

300–400

28

8.38

81,158

10.89

0.77

− 0.26

  

>400

176

52.69

374,139

50.22

1.05

0.05

9

Proximity to rivers

<100

130

38.92

261,091

35.05

1.11

0.10

  

100–200

127

38.02

213,740

28.69

1.33

0.28

  

200–300

52

15.56

161,657

21.70

0.72

− 0.33

  

300–400

20

5.98

85,007

11.41

0.52

− 0.64

  

>400

5

1.49

23,502

3.15

0.47

− 0.75

10

Proximity to roads

<100

42

12.57

210,599

28.27

0.44

− 0.81

  

100–200

49

14.67

149,672

20.09

0.73

− 0.31

  

200–300

39

11.67

104,913

14.08

0.83

− 0.19

  

300–400

45

13.47

70,282

9.43

1.43

0.36

  

>400

159

47.60

209,531

28.13

1.69

0.53

11

Rainfall

<1000

6

1.796

32,050

4.30

0.42

− 0.87

  

1000–1100

23

6.88

78,308

10.51

0.66

− 0.42

  

1100–1200

41

12.27

136,634

18.34

0.67

− 0.40

  

1200–1300

44

13.17

141,577

19.00

0.69

− 0.37

  

>1300

220

65.86

356,428

47.84

1.38

0.32

12

Lithology

C2-3

6

1.7

32,186

4.32

0.42

− 0.88

  

J3

24

7.18

63,649

8.54

0.84

− 0.17

  

C3

85

25.44

221,036

29.67

0.86

− 0.15

  

Bc3

6

1.79

55,183

7.41

0.24

− 1.42

  

BN2-b

1

0.29

21,363

2.87

0.10

− 2.26

  

C4s

47

14.07

143,762

19.30

0.73

− 0.32

  

C4b

0

0

4313

0.58

0.00

None

  

J2

146

43.71

180,214

24.19

1.81

0.59

  

J1-2

19

5.68

23,291

3.13

1.82

0.60

13

TWI

<3

292

87.42

619,173

83.11

1.05

0.05

  

3–6

35

10.47

101,664

13.65

0.77

− 0.26

  

6–9

3

0.89

15,841

2.13

0.42

− 0.86

  

>9

4

1.19

8319

1.12

1.07

0.07