标题：CONCENTRAÇÃO DIÁRIA DA PRECIPITAÇÃO NA BACIA DO ALTO IGUAÇU, PARANÁ, BRASIL - CONCENTRATION INDEX OF RAINFALL IN THE UPPER BASIN IGUAÇU, PARANÁ, BRAZIL
其他标题：CONCENTRATION INDEX OF RAINFALL IN THE UPPER BASIN IGUAÇU, PARANÁ, BRAZIL
期刊名称：Revista Raega: O Espaço Geográfico em Análise
印刷版ISSN：1516-4136
电子版ISSN：2177-2738
出版年度：2017
卷号：39
页码：266-279
DOI：10.5380/raega.v39i0.45913
摘要：A Bacia do Alto Iguaçu/Paraná, localizada no sul do Brasil, encontra-se exposta a riscos derivados das inundações, sobretudo nos meses de verão (dezembro, janeiro e fevereiro). Durante este período a bacia experimenta precipitações convectivas associadas a sistemas frontais juntamente com o aquecimento local. Además, as precipitações convectivas estão associadas com a entrada de umidade procedente do norte do Brasil. Dada a sua concentração e seu grande volume total, o conhecimento da precipitação em escala diária é essencial para o planejamento e gestão da bacia. Em particular, a compreensão dos padrões de precipitação diária torna-se essencial para o planejamento e gestão do território, assim como para a conservação dos recursos naturais. Com base no conhecimento da área de estudo, este trabalho utiliza o índice de concentração da precipitação (CI) para determinar os potencias impactos da precipitação diária. O índice foi aplicado para 18 estações meteorológicas com dados homogeneizados de qualidade, para o período de 1980 a 2010. Os valores foram calculados considerando os totais e a sazonalidade, com o intuito de verificar possíveis variações. Os valores do índice de concentração, foram altos durante o outono e inverno, já durante a primavera e o verão, apresentaram-se moderados.ABSTRACTThe Upper Iguaçu Basin/Paraná, located in the South of Brazil, is exposed to flood risk, mainly during summer months (December, January and February). During this period, the basin undergoes convective precipitation associated with frontal systems with local heating. Besides that, the convective precipitation is related to the moisture entrance from the North of Brazil. Given its concentration at time and large total volume, the knowledge of the resolution of daily rainfall is very important. Particularly, the comprehension of the daily rainfall patterns is essential for planning and management of land and to the conservation of natural resources. Based on area knowledge, this paper uses the concentration index (IC) to determine the potential impacts of daily rainfall. The index was applied in 18 meteorological stations within homogenized quality for the period 1970-2010. The values were calculated considering the the total amount and the sazonality, with the purpose of check possible variations.The values of the Concentration Index were high during fall and winter, and during summer and spring it reveals to be moderate.
其他摘要：The Upper Iguaçu Basin/Paraná, located in the South of Brazil, is exposed to flood risk, mainly during summer
months (December, January and February). During this period, the basin undergoes convective precipitation
associated with frontal systems with local heating. Besides that, the convective precipitation is related to the
moisture entrance from the North of Brazil. Given its concentration at time and large total volume, the knowledge
of the resolution of daily rainfall is very important. Particularly, the comprehension of the daily rainfall patterns is
essential for planning and management of land and to the conservation of natural resources. Based on area
knowledge, this paper uses the concentration index (IC) to determine the potential impacts of daily rainfall. The
index was applied in 18 meteorological stations within homogenized quality for the period 1970-2010. The values
were calculated considering the the total amount and the sazonality, with the purpose of check possible
variations.The values of the Concentration Index were high during fall and winter, and during summer and spring it
reveals to be moderate.
关键词：Bacia do Alto Iguaçu;precipitação;variabilidade e índice de concentração da precipitação;Iguaçu basin; rainfall; variability and concentration index.
其他关键词：Iguaçu basin; rainfall; variability and concentration index
