Flux of Inorganic Carbon as Dissolved, Suspended, and Bed Loads through a Karstic Basin
| Autor: | Carol M. Wicks, Randall L. Paylor |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:Hydraulic engineering
010504 meteorology & atmospheric sciences Geography Planning and Development 0207 environmental engineering Flux 02 engineering and technology Aquatic Science Atmospheric sciences 01 natural sciences Biochemistry chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes Total inorganic carbon lcsh:TC1-978 Dissolved organic carbon 020701 environmental engineering 0105 earth and related environmental sciences Water Science and Technology Bed load lcsh:TD201-500 suspended load Particulates karst dissolved load chemistry cave stream Carbonate Environmental science Suspended load bed load Dissolved load inorganic carbon |
| Zdroj: | Water Volume 11 Issue 4 Water, Vol 11, Iss 4, p 644 (2019) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w11040644 |
| Popis: | Most studies of carbonate bedrock weathering have focused on the dissolved inorganic carbon (DIC) flux while dismissing particulate inorganic carbon (PIC) as insignificant. However, under certain flow conditions PIC flux may be an important term in carbonate weathering. In this study, the total inorganic carbon (TIC) flux was calculated in a fluviokarst basin. Water samples and in situ data loggers were used to determine suspended sediment concentration and water chemistry. The mass of PIC within suspended sediments was quantified by cation/anion analysis of dual filtered/unfiltered samples. The flux of bed load material was calculated via stream power calculations. The analysis of recorded storm events indicated that PIC flux is moderate but can be significant during peak storm discharges. A small storm with a 0.87-month return period produced a PIC flux of 14 g s&minus 1 and a DIC flux of 150 g s&minus 1 at 1.4 m3 s&minus 1 discharge. The largest storm had a return period of 7.7 months, a peak discharge of 4.6 m3 s&minus 1, and peak PIC flux of 620 g s&minus 1 compared to a peak DIC flux of 350 g s&minus 1. During storm events, bed load was the most significant component of the total PIC flux, exceeding the suspended load flux by an order of magnitude. When calculated on an annual basis, the data show that PIC contributes about 10 percent to total inorganic carbon removal. |
| Databáze: | OpenAIRE |
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