Analysis of Landslide Vulnerabilities in Small and Medium-Sized Cities of ColombiaⅡ: A Combined Analysis of Socioeconomic Vulnerability and Physical Vulnerability

Abstract

Vulnerability assessments are essential for evaluating slope hazards and damages from natural disasters. The first part of this study focused on physical vulnerability assessments of small cities in Colombia. In this second part, we developed an indicator-based model for socioeconomic vulnerability assessment. We defined weights for indicators and proxy variables, including indicators for demographic and economic conditions, secondary-damage triggers, disaster preparedness, and response measures. Socioeconomic vulnerability scores were calculated and graded using the weights assigned to the proxy variables. In addition, the evaluation of the combined vulnerability to slope disasters incorporated the results of the physical vulnerability assessments that were conducted in the first part of this study. As a result, vulnerable areas similar to those identified in the field survey were obtained. In the future, these vulnerability assessment results will be used as basic input data for the forecasting and prevention of slope disasters in Colombia. Keywords: Landslide, Socio-economic Vulnerability, Index, Combined Vulnerability Assesment