Empirical Estimation of Landslide Runout Distance Using Geometrical Approximations in the Colombian North–East Andean Region

Daniel Camilo Roman Quintero, Jose David Ortiz Contreras, Mauricio Alberto Tapias Camacho and Edgar Ricardo Oviedo-Ocaña ()
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Daniel Camilo Roman Quintero: Departamento de Ingeniería Civil y Agrícola, Facultad de Ingeniería, Universidad Nacional de Colombia, Carrera 30 No. 45-03 Bogotá D.C. Colombia Edificio 453, Oficina 201, Bogotá 111321, Colombia
Jose David Ortiz Contreras: Departamento de Ingeniería Civil y Agrícola, Facultad de Ingeniería, Universidad Nacional de Colombia, Carrera 30 No. 45-03 Bogotá D.C. Colombia Edificio 453, Oficina 201, Bogotá 111321, Colombia
Mauricio Alberto Tapias Camacho: Departamento de Ingeniería Civil y Agrícola, Facultad de Ingeniería, Universidad Nacional de Colombia, Carrera 30 No. 45-03 Bogotá D.C. Colombia Edificio 453, Oficina 201, Bogotá 111321, Colombia
Edgar Ricardo Oviedo-Ocaña: Escuela de Ingeniería Civil, Facultad de Ingenierías Físico-Mecánicas, Universidad Industrial de Santander, Carrera 27 Calle 9, Bucaramanga 680002, Colombia

Sustainability, 2024, vol. 16, issue 2, 1-17

Abstract: Landslides represent geological hazards wherein a part of a slope loses its static equilibrium and initiates movement. Once this movement begins, it becomes crucial to evaluate the land-slide runout distance (LRD). Currently, there exist numerous tools for estimating LRD, among which geometrical approximations stand as one of the most popular. These empirical models are particularly useful for wide-scale studies, aiding in the scale-down of the problem by identifying the critical areas. This study examines the application of geometrical approximations in the Colombian north–east Andean region. Within this area, a sampling of 49 was conducted using photogrammetric techniques, enabling the morphometrical characterization of each study unit. The results showcase the relationship between geometrical characteristics and LRD in the studied area, considering both land use and geomorphological settings. By exploiting these relationships, the study compares the estimation of LRD using various empirical models, many of which are already employed by practitioners within the studied region. For instance, the relationships in literature display a relative error in the estimation ranging around −50% and 100%. Furthermore, this research proposes new relationships for estimating LRD, enhancing the error estimations in a range between 0% and 50%, highlighting both the advantages and limitations of such empirical estimations. Consequently, it contributes new data to enrich the field of LRD studies.

Keywords: landslides; runout distance; empirical model; geometrical approximation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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