THREATS OF URBAN FLASH FLOODS ON HUMAN STABILITY FOR THE NEXT CENTURY

Código

XXV-SBRH1019

Autores

Luis Miguel Castillo Rápalo, Marcus Nóbrega Gomes Júnior, Danielle de Almeida Bressiani, Marcos Roberto Benso, Eduardo Mário Mendiondo

Tema

16 - Hidroclimatologia, Segurança Hídrica, Risco, Escassez, Inundações e Desastres

Resumo

Human risk due to hydrometeorological extreme events in urban environments is a well-known issue by society. Events such as flash floods tend to impact pedestrian safety, where the threat magnitude depends on the subject?s vulnerability degree. Guidelines for sustainable and resilient city developments and better decision-making for urban risk management are required to cope with human stability threats due to climate change in the next century. For this purpose, we employ hydrodynamic modeling (HydroPol2D) in an urban basin in São Paulo city, Brazil, under climate change conditions to assess human instability with multiple vulnerability degrees, according to people?s age and gender. Our results allowed us to identify areas at-risk that tend to increase at the end of the XXI century. According to the vulnerability degree, for both genders, children are the most at risk compared to teens, the elderly, and adults. This research identifies strategy zones for the implementation of measurements to reduce both flow depth and runoff velocity. Moreover, this study provides a potential tool to improve communication with society to minimize human flooding risks, especially preventing injuries and fatalities.