Data/hora: 09/06/2024 15:32:05

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 01/04/2019
Data da última atualização: | 18/11/2019
Autoria: | FREITAS, J. G.; FURQUIM, S. A. C.; ARAVENA, R.; CARDOSO, E. L.
Afiliação: | J. G. FREITAS, Universidade Federal de São Paulo (UNIFESP); S. A. C. FURQUIM, Universidade Federal de São Paulo (UNIFESP); R. ARAVENA, University of Waterloo; EVALDO LUIS CARDOSO, CPAP.
Título: | Interaction between laks' surface water and groundwater in the Pantanal wetland, Brazil.
Ano de publicação: | 2019
Fonte/Imprenta: | Environmental Earth Sciences, v. 78, n. 5, 2019.
Páginas: | p. 1-15.
DOI: | https://doi.org/10.1007/s12665-019-8140-4
Idioma: | Inglês
Notas: | Artigo 139.
Conteúdo: | The Nhecolândia subregion (area ~ 26,921 km2 ), in central-southern Pantanal, is marked by the presence of hundreds of alkaline-saline lakes, located on the top of sand hills, and thousands of non-alkaline lakes adjacent to the sand hills. This study aimed to provide a better understanding of the hydrological dynamics in the Nhecolândia, which is scarce and controversial, based on piezometric monitoring, isotopic data and chemical analyses of the surface water and groundwater of an alkaline-saline lake, a non-alkaline lake and the sand hill between them. The potentiometric data indicated that both alkaline?saline and non-alkaline lakes act as recharge zones, the former in all seasons and the later only in the wet season. These results are corroborated by downward flow near the zones of recharge, indicated by hydraulic head measurements in multilevel wells around the non-alkaline lake and in mini-piezometers installed in the studied alkaline-saline lake and two more lakes in the region. This set of evidence demonstrated that the groundwater recharge in the study area occurs in the topographical lows, through a process known as depression-focused recharge, which disagrees with previous studies of the area.
Thesagro: | Lençol Freático.
Thesaurus Nal: | Groundwater; Pantanal.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (60373-1) - UPC - AP - DD -  -  -  - DIS