Rainfall-intensity effect on landslide hazard assessment due to climate change in north-western Colombian Andes
ABSTRACT : 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 implementati...
- Autores:
-
Aristizábal Giraldo, Edier Vicente
García Aristizábal, Edwin Fabián
Marín Sánchez, Roberto José
Gómez Cardona, Federico
Guzmán Martínez, Juan Carlos
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2022
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/32769
- Acceso en línea:
- https://hdl.handle.net/10495/32769
https://revistas.udea.edu.co/index.php/ingenieria/article/view/343311
- Palabra clave:
- Desastres naturales
Natural disasters
Desprendimientos de tierra
Landslides
Cambio climático
Climate change
Amenazas naturales
Natural hazards
http://aims.fao.org/aos/agrovoc/c_1666
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/2.5/co/
| Summary: | ABSTRACT : 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. |
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