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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
25/01/2021 |
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Data da última atualização: |
25/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PIAZZA, G. A.; DUPAS, R.; GASCUEL-ODOUX, C.; PINHEIRO, A.; KAUFMAN, V.; BLAINSKI, É. |
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Título: |
Variability of hydro-chemical response to storm events captured using highfrequency river monitoring in subtropical catchments, southern Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Revista de Gestão de Água da América Latina, Porto Alegre, v. 17, n. 20, p. 1-15, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
High-frequency (30 min) data was used to investigate storm responses in two subtropical catchments in the Brazilian Atlantic Forest. We measured discharge, turbidity and conductivity in a 30 km2
subsurface-dominated catchment (2012-2013) and in a 48 km2 groundwater-dominated catchment (2014-2016). Conductivity was dominated by elements associated with geochemical weathering or atmospheric deposition, but also nutrients such as nitrate. Turbidity was a proxy for suspended sediment. Results showed similar dominant storm event patterns in both catchments. The dominant pattern for turbidity was a positive C-Q relationship with clockwise hysteresis, suggesting a nearby source, while the dominant pattern for conductivity was a negative C-Q relationships with clockwise hysteresis, suggesting storage of solutes in deep groundwater and distant sources (hillside). The negative C-Q pattern for conductivity was stronger and the hysteresis wider in the groundwater-dominated catchment. Hydroclimatic controls were also similar between both catchments, but storm event patterns in the subsurface-dominated catchment were more strongly influenced by antecedent conditions (conditions before the event) that in the groundwater dominated catchment. |
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Palavras-Chave: |
conductivity; High-frequency monitoring; storm events; turbidity. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01999naa a2200229 a 4500
001 1130548
005 2021-01-25
008 2020 bl uuuu u00u1 u #d
100 1 $aPIAZZA, G. A.
245 $aVariability of hydro-chemical response to storm events captured using highfrequency river monitoring in subtropical catchments, southern Brazil.$h[electronic resource]
260 $c2020
520 $aHigh-frequency (30 min) data was used to investigate storm responses in two subtropical catchments in the Brazilian Atlantic Forest. We measured discharge, turbidity and conductivity in a 30 km2 subsurface-dominated catchment (2012-2013) and in a 48 km2 groundwater-dominated catchment (2014-2016). Conductivity was dominated by elements associated with geochemical weathering or atmospheric deposition, but also nutrients such as nitrate. Turbidity was a proxy for suspended sediment. Results showed similar dominant storm event patterns in both catchments. The dominant pattern for turbidity was a positive C-Q relationship with clockwise hysteresis, suggesting a nearby source, while the dominant pattern for conductivity was a negative C-Q relationships with clockwise hysteresis, suggesting storage of solutes in deep groundwater and distant sources (hillside). The negative C-Q pattern for conductivity was stronger and the hysteresis wider in the groundwater-dominated catchment. Hydroclimatic controls were also similar between both catchments, but storm event patterns in the subsurface-dominated catchment were more strongly influenced by antecedent conditions (conditions before the event) that in the groundwater dominated catchment.
653 $aconductivity
653 $aHigh-frequency monitoring
653 $astorm events
653 $aturbidity
700 1 $aDUPAS, R.
700 1 $aGASCUEL-ODOUX, C.
700 1 $aPINHEIRO, A.
700 1 $aKAUFMAN, V.
700 1 $aBLAINSKI, É.
773 $tRevista de Gestão de Água da América Latina, Porto Alegre$gv. 17, n. 20, p. 1-15, 2020.
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