ASSESSING RAINFALL EROSIVITY IN A TROPICAL REGION USING FREE SOFTWARE

Código

PAP050

Autores

Thamiris Fontoura de Araujo, Jullian Souza Sone, Teodorico Alves Sobrinho, Paulo Tarso Sanches de Oliveira

Tema

MUDANÇAS CLIMÁTICAS E PROCESSOS HIDROSSEDIMENTOLÓGICOS CONTINENTAIS E COSTEIROS

Resumo

The Rainfall Intensity Summarization Tool (RIST) was developed to facilitate rainfallerosivity analysis, however, there are few investigations using this tool in tropical regions. Here, we show an application of the RIST to a rural basin located in Midwestern Brazil. To evaluate the program performance,we used rainfall data from 2012to 2017.We analysedthe software outputs: kinetic energy, total precipitation, maximum intensity and Rainfall Erosivity Index (EI30) in each erosiveevent. We find a R-factor of8,548.342±2,806.234 MJ mm ha-¹h-¹yr-¹,with the highest values observed duringthe months ofDecember and March.TheRIST program isauseful tool for automatically separating the erosive events to estimate therainfall kineticenergy in tropical regions.Therefore, this tool has potential tocontribute on therainfall analysis supporting decision-makingin agriculturesuch as planningbestperiodsfor seeding and harvesting.