Una interpretación de los factores que influyen sobre la variabilidad de la alcalinidad en el Río Paraná medio (Argentina)
The multinational Paraná River (drainage basin, ~2.6 10<SUP>6</SUP> km<SUP>2</SUP>; annual discharge, ~500 km<SUP>3</SUP> y<SUP>-1</SUP>) has a long (~900 km) and wide (~30 – 50 km) flood valley, which occupies its middle and lower stretches. Most of t...
Guardado en:
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| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2019
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/77419 |
| Aporte de: |
| Sumario: | The multinational Paraná River (drainage basin, ~2.6 10<SUP>6</SUP> km<SUP>2</SUP>; annual discharge, ~500 km<SUP>3</SUP> y<SUP>-1</SUP>) has a long (~900 km) and wide (~30 – 50 km) flood valley, which occupies its middle and lower stretches. Most of the valley’s area (estimated area of ~50000 kmkm<SUP>2</SUP>) holds a myriad of ponds, ox-bows, and channels which, following the seasonal variation of the prevailing discharge regime, exchanges water, dissolved species, sediment, and biological materials with the Paraná’s main stem. Exceptional hydrological events (e.g., ENSO-triggered) flood almost totally the expanse of the flood valley. A ten year-long (1965 – 1975) continuous series of alkalinity measurements allowed probing into the mechanisms that determine the observed alkalinity variability -controlled by several biogeochemical processes (e.g., photosynthesis/respiration, nitrification/denitrification, etc.) occurring in the riparian environment-, which are associated with the Paraná’s hydrological stage. |
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