Details

Autor(en) / Beteiligte

• Aristizábal Giraldo, Edier Vicente
• García Aristizábal, Edwin
• Marín Sánchez, Roberto
• Gómez Cardona, Federico
• Guzmán Martínez, Juan Carlos

Titel

Rainfall-intensity effect on landslide hazard assessment due to climate change in north-western Colombian Andes

Ist Teil von

• Revista Facultad de Ingeniería, 2022-04 (103), p.51-66

Ort / Verlag

Medellín: Universidad de Antioquía

Erscheinungsjahr

2022

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Landslides triggered by rainfall are one of the most frequent causes of disasters in tropical countries and mountainous terrains. Recent studies show an upsurge in landslide occurrence as an expected impact of human-induced climate change. This paper presents the analysis and implementation of two different physically-based models, SHALSTAB and TRIGRS, to evaluate the effect of rainfall on landslide hazard assessment in the north-western Colombian Andes. Intensity-Duration-Frequency curves were used in climate change scenarios for different return periods. According to the results, although higher rainfall intensities increase, landslide occurrence does not escalate in a direct or proportional relationship. Considering a steady infiltration process (SHALSTAB), the results show an expansion of d unstable areas, compared with a transient infiltration process (TRIGRS). A greater influence of rainfall duration instead of rainfall intensity was observed. The results highlight the need for studies that incorporate the scenarios of variability and climate change in the hazard assessment and land planning in the long term.