Verification of landslide susceptibility mapping: a case study

✍ Scribed by Fernández, Clemente Irigaray; Del Castillo, Tomás Fernández; Hamdouni, Rachid El; Montero, José Chacón

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 404 KB
• Volume: 24
• Category: Article
• ISSN: 0360-1269
• DOI: 10.1002/(sici)1096-9837(199906)24:6<537::aid-esp965>3.0.co;2-6

✦ Synopsis

A methodology is proposed for mapping susceptibility to landsliding and validating the results. Heavy rains in late 1996 and early 1997 led to a large number of landslides in the Rute sector (Co rdoba, Southern Spain), where landslide susceptibility mapping had previously been carried out using a `matrix' method developed with a Geographical Information System (GIS). Analysis of the distribution of the new landslides (or reactivated earlier ones) enabled the methodology to be validated by calculating association coefficients and determining the closeness of the match between subsequent field evidence and the previously defined susceptibility levels. From the data obtained, it can be concluded that the susceptibility mapping effectively explained the spatial distribution of landslides, thus providing valuable information on stability conditions over a widespread area.