Landslides and debris flow in the tropical and mountainous terrains of the Colombian Andes

Edier Aristizábal

Departamento de Geociencias y Medio Ambiente, Universidad Nacional, Medellín, Colombia

Institute of Environmental Science and Geography, Postdam University, Germany

Multi - Geohazard setting in Colombia

Colombian population

Landslide occurrence

Human exposition

Daily landslide occurrence

Landslide in the main cities

Rosas (Cauca), January 8th 2023

Chocó, January 13th 2024

Debris flow

Risk scenario

Debris flow (lahar) --> volcano

Debris flow --> earthquake

Debris flow --> rainfall

Landslide cluster inventory

Landslide cluster inventory

Debris flow propagation

Debris flow propagation

Debris flow disaster

Debris flow --> rainfall

Landslide clusters triggered by rainfall

Rainfall threshold for landslide clusters

Debris flow --> rainfall

Medellín: A Coupled Evolution of a City and Landslides

Medellín location

Medellín location

Medellín growth

Medellín growth & slopes

Medellín growth & slopes

Medellín growth & slopes

Medellín growth & urban types

Medellín. < 1772

Santa Elena - Medellín. 1954. >100 deads

Santo Domingo - Medellín. 1974. >70 deads

Villatina - Medellín. 1987. >500 deads

La Cruz - Medellín. 2008. 24 deads

Alto Verde - Medellín. 2008. 12 deads

Calle Larga - Bello. 2010. 102 fatalities

San Antonio - Medellín, 2022. 2 deads

Project supported by: