Factors | Class | No of pixels in internal | % of in internal | No of landslide | % of landslide | Frequency ratio |
slope | 0˚ - 7˚ | 1,073,694 | 0.26 | 30 | 0.12 | 0.46 |
8˚ - 15˚ | 1,198,318 | 0.29 | 82 | 0.32 | 1.13 | |
16˚ - 25˚ | 1,003,784 | 0.24 | 92 | 0.36 | 1.51 | |
26˚ - 35˚ | 584,827 | 0.14 | 39 | 0.15 | 1.10 | |
>35˚ | 342,995 | 0.08 | 12 | 0.05 | 0.58 | |
aspect | flat | 32,864 | 0.01 | 2 | 0.01 | 1.00 |
N | 642,061 | 0.15 | 58 | 0.23 | 1.49 | |
NE | 692,749 | 0.16 | 62 | 0.24 | 1.48 | |
E | 622,765 | 0.15 | 27 | 0.11 | 0.71 | |
SE | 420,820 | 0.10 | 22 | 0.09 | 0.86 | |
S | 291,271 | 0.07 | 12 | 0.05 | 0.68 | |
SW | 343,124 | 0.08 | 11 | 0.04 | 0.53 | |
W | 496,224 | 0.12 | 26 | 0.10 | 0.86 | |
NW | 661,740 | 0.16 | 35 | 0.14 | 0.87 | |
Rock formation | γ | 6634 | 0.00 | 0 | 0.00 | 0.00 |
P | 148,296 | 0.04 | 9 | 0.04 | 1.00 | |
D | 125,565 | 0.03 | 3 | 0.01 | 0.39 | |
C | 525,210 | 0.13 | 14 | 0.05 | 0.44 | |
T | 37,799 | 0.01 | 5 | 0.02 | 2.18 | |
J | 1,437,547 | 0.34 | 190 | 0.75 | 2.18 | |
K | 337,329 | 0.08 | 9 | 0.04 | 0.44 | |
E-N | 407,086 | 0.10 | 10 | 0.04 | 0.40 | |
Q3pl-Q1 | 944,902 | 0.22 | 3 | 0.01 | 0.05 | |
Q4 | 229,284 | 0.05 | 12 | 0.05 | 0.86 | |
Distance to fault | 0 - 1500 m | 1,706,709 | 0.41 | 82 | 0.32 | 0.79 |
1500 - 3000 m | 969,180 | 0.23 | 68 | 0.27 | 1.16 | |
3000 - 4500 m | 576,475 | 0.14 | 49 | 0.19 | 1.40 | |
4500 - 6000 m | 314,189 | 0.07 | 34 | 0.13 | 1.78 | |
>6000 m | 637,065 | 0.15 | 22 | 0.09 | 0.57 | |
Distance to drainage | 0 - 400 m | 1,348,084 | 0.32 | 165 | 0.65 | 2.02 |
400 - 800 m | 1,057,756 | 0.25 | 32 | 0.13 | 0.50 | |
800 - 1200 m | 770,123 | 0.18 | 15 | 0.06 | 0.32 | |
1200 - 1600 m | 493,016 | 0.12 | 16 | 0.06 | 0.53 | |
1600 - 2000 m | 298,034 | 0.07 | 13 | 0.05 | 0.72 | |
2000 - 2400 m | 152,044 | 0.04 | 9 | 0.04 | 0.98 | |
>2400 m | 84,561 | 0.02 | 5 | 0.02 | 0.97 | |
Drainage density | <0.9/km | 340,397 | 0.08 | 25 | 0.10 | 1.21 |
0.9 - 1.1/km | 1,467,887 | 0.35 | 143 | 0.56 | 1.61 | |
1.1 - 1.3/km | 1,622,329 | 0.39 | 73 | 0.29 | 0.74 | |
1.3 - 1.5 km | 536,025 | 0.13 | 13 | 0.05 | 0.40 | |
>1.5/km | 236,980 | 0.06 | 1 | 0.00 | 0.07 | |
FVC | 0% - 10% | 52,120 | 0.01 | 4 | 0.02 | 1.27 |
10% - 20% | 204,596 | 0.05 | 19 | 0.07 | 1.53 | |
20% - 50% | 1,342,311 | 0.32 | 72 | 0.28 | 0.88 | |
50% - 75% | 1,256,670 | 0.30 | 66 | 0.26 | 0.87 | |
75% - 100% | 1,347,921 | 0.32 | 94 | 0.37 | 1.15 | |
landuse | farmland | 76,033 | 0.02 | 1 | 0.00 | 0.22 |
forest | 465,573 | 0.11 | 25 | 0.10 | 0.89 | |
grass | 715,873 | 0.17 | 86 | 0.34 | 2.00 | |
water | 50,268 | 0.01 | 0 | - | 0.00 | |
reservoir | 9289 | 0.00 | 0 | - | 0.00 | |
tidal flat | 30,105 | 0.01 | 6 | 0.02 | 3.32 | |
snow | 8361 | 0.00 |
| - | 0.00 | |
buildup | 24,506 | 0.01 | 5 | 0.02 | 3.40 | |
bare soil | 1,402,117 | 0.33 | 29 | 0.12 | 0.34 | |
gravel | 138,967 | 0.03 | 8 | 0.03 | 0.96 | |
rock | 1,278,564 | 0.30 | 91 | 0.36 | 1.19 | |
Distance to road | 0 - 500 m | 1,244,405 | 0.30 | 178 | 0.70 | 2.36 |
500 - 1000 m | 993,757 | 0.24 | 27 | 0.11 | 0.45 | |
1000 - 1500 m | 750,699 | 0.18 | 21 | 0.08 | 0.46 | |
1500 - 2000 m | 511,902 | 0.12 | 14 | 0.05 | 0.45 | |
2000 - 2500 m | 322,203 | 0.08 | 9 | 0.04 | 0.46 | |
>2500 m | 380,652 | 0.09 | 6 | 0.02 | 0.26 |