Hydrological Response to Drought Occurrences in a Brazilian Savanna Basin

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorJunqueira, Rubens-
Autor(es): dc.creatorViola, Marcelo R.-
Autor(es): dc.creatorAmorim, Jhones da S.-
Autor(es): dc.creatorMello, Carlos R. de-
Data de aceite: dc.date.accessioned2026-02-09T11:21:58Z-
Data de disponibilização: dc.date.available2026-02-09T11:21:58Z-
Data de envio: dc.date.issued2021-06-08-
Data de envio: dc.date.issued2021-06-08-
Data de envio: dc.date.issued2020-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/46483-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1139353-
Descrição: dc.descriptionThe Brazilian savanna is one of the world’s 25 biodiversity hotspots. However, droughts can decrease water availability in this biome. This study aimed to analyze meteorological and hydrological droughts and their influence on the hydrological behavior in a Brazilian savanna basin. For that, hydrological indicators were calculated to analyze the hydrological behavior in the Pandeiros river basin (PRB). The Standardized Precipitation Index (SPI) and Standardized Streamflow Index (SSI) were calculated for the hydrological year and rainy season from 1977 to 2018. The propagation of the meteorological to hydrological drought was studied by means of the Pearson coefficient of correlation between the SSI and SPI with 0, 3, 6, 9, and 12-month lags. A longer meteorological drought was observed from 2014/15 to 2017/18 which caused a reduction in the groundwater recharge, besides potentially reducing the ecological functions of the Brazilian savanna. This drought was intensified by an increase in the average annual temperature, resulting in the increasing of evapotranspiration. Regarding drought propagation, there is no significant difference among the coefficients of correlation from 0 to 6-month lags. For the lags of 9 and 12 months, the correlation decreases, indicating a greater influence of the current rainy season than the past ones.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherMolecular Diversity Preservation International - MDPI-
Direitos: dc.rightsacesso aberto-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
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Palavras-chave: dc.subjectExtreme events-
Palavras-chave: dc.subjectHydrological indicators-
Palavras-chave: dc.subjectStandardized Precipitation Index (SPI)-
Palavras-chave: dc.subjectStandardized Streamflow Index (SSI)-
Palavras-chave: dc.subjectWater resources management-
Palavras-chave: dc.subjectEventos extremos-
Palavras-chave: dc.subjectIndicadores hidrológicos-
Palavras-chave: dc.subjectÍndice Padronizado de Precipitação-
Palavras-chave: dc.subjectÍndice Padronizado de Escoamento-
Palavras-chave: dc.subjectGestão de recursos hídricos-
Palavras-chave: dc.subjectSecas-
Título: dc.titleHydrological Response to Drought Occurrences in a Brazilian Savanna Basin-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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