Research Article
The Role of Initial Soil Conditions in Shallow Landslide Triggering: Insights from Physically Based Approaches
Table 1
Physical properties and corresponding USCS-USDA class for the 21 samples collected on Monte Mario Hill.
| | Sample code | Soil thickness (m) | Gravel (%) | Sand (%) | Silt (%) | Clay (%) | WL (%) | IP (%) | USCS class | USDA class |
| | S1 | | 22.3 | 33.9 | 16.7 | 27.1 | 29 | 5.7 | SC | Loam | | S2 | | 4.2 | 12.7 | 34.5 | 48.6 | 39.6 | 11.6 | CL | Silty clay loam | | S3 | | 19.6 | 52 | 13 | 15.4 | — | — | SC | Sandy loam | | S4 | | 25.3 | 50.8 | 12.8 | 11.1 | — | — | SM | Sandy loam | | S5 | | 5.5 | 66.4 | 8.6 | 19.5 | 25.9 | 4.8 | SC | Sandy loam | | S6 | 1.3 | 4 | 51 | 17.1 | 27.9 | 36.2 | 10.7 | SC | Sandy clay loam | | S7 | | 8.4 | 77.5 | 0.9 | 13.2 | — | — | SC | Loamy sand | | S8 | | 6.5 | 87.5 | 3 | 3 | — | — | SM | Sand | | S9 | | 2.8 | 9.6 | 36.5 | 51.1 | 35.1 | 11.3 | CL | Clay loam | | S10 | | 9.1 | 19 | 30.2 | 41.7 | 34 | 9.8 | CL | Clay loam | | S11 | | 6.4 | 63.8 | 11.4 | 18.4 | — | — | SC | Sandy loam | | S12 | | 13.3 | 68.3 | 11.5 | 6.9 | — | — | SM | Loamy sand | | S13 | 1.1 | 0 | 3.8 | 38.5 | 57.7 | 50.3 | 16 | MH | Silty clay | | S14 | | 7 | 35.6 | 29.5 | 27.9 | 25.2 | 6.1 | CL | Loam | | S15 | | 5.4 | 25.3 | 29.8 | 39.5 | 37.9 | 14.6 | CL | Clay loam | | S16 | | 16.1 | 30.7 | 24 | 29.2 | 29.8 | 8.5 | CL | Loam | | S17 | | 1.1 | 13.6 | 35 | 50.3 | 45.4 | 10.8 | CL | Silty clay loam | | S18 | | 0 | 3.5 | 50.2 | 46.3 | 32.9 | 5.7 | CL | Silty clay loam | | S19 | | 1 | 7 | 27.5 | 64.5 | 48.6 | 15.3 | CL | Silty clay | | S20 | 0.75 | 5.7 | 30.3 | 21.3 | 42.7 | 41.9 | 16.8 | CL | Clay loam | | S21 | | 10.7 | 48.6 | 13.9 | 26.8 | 34.2 | 11.5 | SC | Sand |
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