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Mapping susceptibility to landsliding in the central Apennines, Italy

Mapping susceptibility to landsliding in the central Apennines, Italy
Mapping susceptibility to landsliding in the central Apennines, Italy
Generalised linear modelling was used to model the relation between landsliding and several independent variables (geology, dip, strike, strata-slope interaction, aspect, density of lineaments and slope angle) for a small area of the central Apennines, Italy. Raster maps of landsliding and the independent variables were produced from air photographs, topographic and geological maps, and field checking. A logistic regression was then obtained between all slope movements and the independent variables (chosen to reflect conditions prior to landsliding). Not surprisingly, geology and slope angle were found to be the most significant factors in the model. The landslides in the region were then classified into dormant and active types and further linear models were obtained for each. While geology and slope angle were again the most significant factors in each model, slope aspect and strike were less significant for active landslides. Finally, further independent variables applicable to active landslides only (vegetation cover, soil thickness, horizontal curvature, vertical curvature, concavity of slope, local relief and roughness) were added to the model for active landslides. Interestingly, with these new variables added, vegetation cover and concavity of slope were found to be more significant than geology and slope angle.
italian apennines, generalised linear modelling, landslides
373-385
Atkinson, P.M.
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Massari, R.
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Atkinson, P.M.
aaaa51e4-a713-424f-92b0-0568b198f425
Massari, R.
4d973214-aebb-4ff7-9cc2-136c8ccf1d2a

Atkinson, P.M. and Massari, R. (1998) Mapping susceptibility to landsliding in the central Apennines, Italy. Computers & Geosciences, 24 (4), 373-385. (doi:10.1016/S0098-3004(97)00117-9).

Record type: Article

Abstract

Generalised linear modelling was used to model the relation between landsliding and several independent variables (geology, dip, strike, strata-slope interaction, aspect, density of lineaments and slope angle) for a small area of the central Apennines, Italy. Raster maps of landsliding and the independent variables were produced from air photographs, topographic and geological maps, and field checking. A logistic regression was then obtained between all slope movements and the independent variables (chosen to reflect conditions prior to landsliding). Not surprisingly, geology and slope angle were found to be the most significant factors in the model. The landslides in the region were then classified into dormant and active types and further linear models were obtained for each. While geology and slope angle were again the most significant factors in each model, slope aspect and strike were less significant for active landslides. Finally, further independent variables applicable to active landslides only (vegetation cover, soil thickness, horizontal curvature, vertical curvature, concavity of slope, local relief and roughness) were added to the model for active landslides. Interestingly, with these new variables added, vegetation cover and concavity of slope were found to be more significant than geology and slope angle.

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Published date: 1998
Keywords: italian apennines, generalised linear modelling, landslides

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Local EPrints ID: 17340
URI: https://eprints.soton.ac.uk/id/eprint/17340
PURE UUID: 0aac1829-4c43-4e13-a3e0-3e4c8d4b4b60

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Date deposited: 24 Aug 2005
Last modified: 18 Jul 2019 12:45

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