Eventos pluviais extremos e estiagens na região das Missões, RS: a percepção dos moradores do município de Santo Antônio das Missões
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Data
2012-11-05
Autores
Ribeiro, Arnaldo de Araújo [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A pesquisa contempla a abordagem de eventos pluviais extremos e estiagens na região das Missões, Rio Grande do Sul, estes vinculados a percepção climática a partir dos moradores rurais e urbanos do município de Santo Antônio das Missões. Tem por objetivo a aplicabilidade da percepção do meio ambiente à análise das chuvas e estiagens na região. O estudo metodologicamente segue o paradigma do ritmo climático Monteiro (1971), Zavattini (2004) e a vertente da percepção do meio ambiente relacionada aos riscos naturais Oliveira (1977) e Sartori (2000) para a execução da análise das chuvas e estiagens. Realizou-se o levantamento teóricometodológico da análise climática e percepção e definiu-se a metodologia de execução dos trabalhos de campo e coleta de dados qualitativos referentes à percepção. Executou-se a metodologia da análise climática dos dados anuais, sazonais, mensais e diários de chuva, com isso obteve-se a variação têmporoespacial e o regime mensal e diário das chuvas para o período de 1992 a 2010. A partir destas etapas, definiu-se os episódios chuvosos e secos, aos quais aplicou-se a análise rítmica e confirmou-se a gênese dos extremos de chuva e estiagem na região, bem como relacionou-os à pesquisa de percepção climática. Os resultados obtidos apresentam a percepção das estiagens na região como bastante freqüentes e entendidas em sua gênese e previsão por parte do conhecimento e percepção populares. Além disso, se constatou, com a análise das chuvas que a região das Missões apresenta variação de extremos de chuva, tanto se destacando nos anos secos como nos chuvosos perante o entorno, constituindo-se como área seguidamente atingida por variações extremas no regime e distribuição da precipitação
This research concerns in approach extremes rainfall events and droughts in the Missões region, Rio Grande do Sul, whose events have been linked to climate perception from rural and urban residents of Santo Antonio das Missões. The main objective is the environment perception applied to the rainfall and droughts analysis in the region. This study methodologically follows the paradigm of climatic rhythm based on Monteiro (1971), Zavattini (2004) and the environmental perception research line connected to natural hazards addressed in Oliveira (1977) and (Sartori, 2000) where it will be able to analyze rainfall and droughts. Theoretical and methodological research of climate analysis and its perception was done and it was defined the methodology execution. Visits to the area of study where were collected qualitative data related to perception in research according to the population. Climate data annual, seasonal, monthly and daily rainfall were analyzed according to methodological approach, with whose results was possible to obtain temporal-spatial variation and the monthly and daily rainfall for the period 1992 to 2010. Afterward these stages, were defined the rainiest and driest episodes, in which were applied the rhythmic analysis technique and it was possible to confirmed the atmospheric genesis of extreme rainfall and drought in the region. There was a relationship to climate perception of population researched. The final results conclude that the perception of droughts in the region as a very frequent event and understood in its atmospheric genesis and predicted by the popular knowledge and its perception. Furthermore, it was found in the rainfall analysis that the Missões region presents an extreme rainfall variation, as same as and in dry and rainy years, Missões region can be considered as an area that has been hit by extreme changes in rain regime and its distribution
This research concerns in approach extremes rainfall events and droughts in the Missões region, Rio Grande do Sul, whose events have been linked to climate perception from rural and urban residents of Santo Antonio das Missões. The main objective is the environment perception applied to the rainfall and droughts analysis in the region. This study methodologically follows the paradigm of climatic rhythm based on Monteiro (1971), Zavattini (2004) and the environmental perception research line connected to natural hazards addressed in Oliveira (1977) and (Sartori, 2000) where it will be able to analyze rainfall and droughts. Theoretical and methodological research of climate analysis and its perception was done and it was defined the methodology execution. Visits to the area of study where were collected qualitative data related to perception in research according to the population. Climate data annual, seasonal, monthly and daily rainfall were analyzed according to methodological approach, with whose results was possible to obtain temporal-spatial variation and the monthly and daily rainfall for the period 1992 to 2010. Afterward these stages, were defined the rainiest and driest episodes, in which were applied the rhythmic analysis technique and it was possible to confirmed the atmospheric genesis of extreme rainfall and drought in the region. There was a relationship to climate perception of population researched. The final results conclude that the perception of droughts in the region as a very frequent event and understood in its atmospheric genesis and predicted by the popular knowledge and its perception. Furthermore, it was found in the rainfall analysis that the Missões region presents an extreme rainfall variation, as same as and in dry and rainy years, Missões region can be considered as an area that has been hit by extreme changes in rain regime and its distribution
Descrição
Palavras-chave
Secas, Chuvas, Analise ambiental - 1992-2010, Climatologia geográfica, Circulação atmosferica, Avaliação paisagística, Percepção, Santo Antônio das Missões (RS)
Como citar
RIBEIRO, Arnaldo de Araújo. Eventos pluviais extremos e estiagens na região das Missões, RS: a percepção dos moradores do município de Santo Antônio das Missões. 2012. 198 f. Dissertação - (mestrado) - Universidade Estadual Paulista, Instituto de Geociências e Ciências Exatas, 2012.