Progression of vulnerability to earthquakes in the urban area of the District of Santiago de Cali, Colombia

Abstract

Disaster risk management in urban environments depends to a large extent on the availability of information related to studies and cartographic products that express the social, economic and environmental conditions that intervene in the construction of vulnerability and risk scenarios. The article presents a contribution to the knowledge of the vulnerability of the District of Santiago de Cali, Colombia, against seismic phenomena. Coverage data in social services and biophysical aspects were analyzed, using multivariate statistics for three-time windows (years 2000, 2012 and 2018) and spatial representations of the results were generated through geographic information systems. The methodology used facilitated the obtaining of indices of biophysical and social capacities from the Multiple Factorial Analysis (AFM), which, operated with the impact pressure factors of the phenomenon and the exposure, allowed to establish the vulnerability values. The results obtained show the progression of vulnerability in the selected time windows where persistent variations influenced by social aspects are shown, in some areas of the city, in contrast to biophysical aspects. The findings constitute important clues that would allow the prioritization of some sectors of Cali that can be the object of intervention.

Keywords

• sistema
• vulnerabilidad
• amenaza sísmica
• capacidades sociales
• capacidades biofísicas
• colombia