Mapping landslide susceptibility using data-driven methods

Land use and land cover geoinformation properties and its influence on the landslide susceptibility zonation of road network

“…The IV is a bivariate statistical method that has been used in several studies and different areas with good results for landslide susceptibility assessment (e.g., (Guillard and Zêzere, 2012; Oliveira et al, 2015a;Zêzere et al, 2017). The IV of each class within each explanatory variable is given by Eq.…”

“…This method was also applied in several studies conducted in Portuguese territory with good performance in the 10 susceptibility assessment (e.g., Guillard and Zêzere, 2012;Oliveira et al, 2015b;Pereira et al, 2014;Zêzere et al, 2017).…”

“…Landslide susceptibility reflects the degree to which terrain unit can be affected by slope movements in the future (Günther et al, 2013). 15 In general, the choice of geoinformation (GI) details for the landslide predisposing factors are not often explained in the landslide susceptibility assessment based on statistical methods; or some criteria defined in the literature is used for this selection, since these variables explain the occurrence of slope movements in the study area (Blahut et al, 2010;Carrara et al, 1991;Castella et al, 2007;Castellanos Abella, 2008;Guzzetti et al, 1999Guzzetti et al, , 2006Soeters and van Westen, 1996;van Westen et al, 2008;20 Zêzere et al, 2008Zêzere et al, , 2017.…”

“…The predisposing factor maps (PFM) were selected after literature reviewing about the causal factors of landslides occurrence (Blahut et al, 2010;Carrara et al, 1991;Castella et al, 2007;Castellanos Abella, 2008;Guzzetti et al, 1999;Soeters and van Westen, 1996;van Westen et al, 2008;Zêzere et al, 2008Zêzere et al, , 2017. The PFM selected to the landslide susceptibility modeling in Zêzere watershed are presented in Figure 2.…”

“…This GI has different properties and has been used in several studies about landslides in Portuguese territory (e.g. Guillard and Zêzere, 2012;Meneses et al, 2015b;Piedade et al, 2011;Reis et 15 al., 2003;Zêzere et al, 2017). Table 1 describes the main properties of this LUC GI (DGT, 2013;EEA, 2007;IGP, 2010).…”