Research Article
Probabilistic Risk Assessment in Medium Scale for Rainfall-Induced Earthflows: Catakli Catchment Area (Cayeli, Rize, Turkey)
Table 3
Resultant
coefficients and test statistics for the variables in the model equations with respect to different data sets.
| | Data | Parameter | | Std. error | Wald | Degree of freedom | Sig. | Exp() |
| | The closest grid cell () | Plan slope curvature (100−1 m) | −0.256 | 0.104 | 6.074 | 1 | 0.014 | 0.774 | | Topographic wetness index | −0.767 | 0.366 | 4.405 | 1 | 0.036 | 0.464 | | Distance to roads (m) | −0.005 | 0.002 | 4.263 | 1 | 0.039 | 0.995 | | Building density (km−2) | 0.019 | 0.006 | 9.896 | 1 | 0.002 | 1.020 | | Constant | 3.667 | 2.031 | 3.259 | 1 | 0.071 | 39.122 |
| | m () | Topographic altitude (m) | −0.004 | 0.001 | 20.351 | 1 | 0.000 | 0.996 | | Plan slope curvature (100−1 m) | −0.373 | 0.077 | 23.669 | 1 | 0.000 | 0.689 | | Topographic wetness index | −0.948 | 0.276 | 11.816 | 1 | 0.001 | 0.388 | | Sediment transport capacity index | −0.067 | 0.023 | 8.600 | 1 | 0.003 | 0.935 | | Distance to drainage (m) | 0.005 | 0.002 | 8.946 | 1 | 0.003 | 1.005 | | Building density (km−2) | 0.021 | 0.004 | 28.140 | 1 | 0.000 | 1.022 | | Constant | 5.425 | 1.679 | 10.436 | 1 | 0.001 | 227.001 |
| | m () | Topographic altitude (m) | −0.002 | 0.001 | 7.696 | 1 | 0.006 | 0.998 | | Plan slope curvature (100−1 m) | −0.272 | 0.059 | 21.419 | 1 | 0.000 | 0.762 | | Topographic wetness index | −0.899 | 0.215 | 17.571 | 1 | 0.000 | 0.407 | | Stream power index | 0.675 | 0.215 | 9.811 | 1 | 0.002 | 1.964 | | Sediment transport capacity index | −0.177 | 0.046 | 15.030 | 1 | 0.000 | 0.838 | | Distance to roads (m) | −0.004 | 0.001 | 12.200 | 1 | 0.000 | 0.996 | | Building density (km−2) | 0.017 | 0.003 | 29.904 | 1 | 0.000 | 1.017 | | Alluvium | −20.937 | 10427.773 | 0.000 | 1 | 0.998 | 0.000 | | Constant | 5.286 | 1.249 | 17.917 | 1 | 0.000 | 197.513 |
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