EGU General Assembly 2024

Debris flow catchments and landscape evolution in the northern Colombian Andes


Edier Aristizábal1,2, Oliver Korup2

1 - Departamento de Geociencias y Medio Ambiente, Universidad Nacional, Medellín, Colombia
2 - Institute of Environmental Science and Geography, Postdam University, Germany


Multi-geohazard setting in Colombia

Study area relief

Source: Google Earth Engine

Rainfall

Data source: satellite rainfall CHIRPS (1981-2023), Spatial Res. 5km

Structural density

Debris flow --> rainfall

Debris flow --> rainfall

Source: García-Delgado et al. (2019)

Debris flow --> rainfall

San Carlos1
Photo: Velasquez & Mejía (1992)

Landslide clusters triggered by rainfall

Landslide distribution

Transient catchments and landslide distribution

Transient catchments and debris flow

Spatial dependency of Hypsometric Integral

Hypsometric Integral and landslides

Hypsometric distribution and landslides

Knickpoint and landslides

Knickpoint and landslides

Project supported by: