scholarly journals Flux of Inorganic Carbon as Dissolved, Suspended, and Bed Loads through a Karstic Basin

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 644 ◽  
Author(s):  
Randall Paylor ◽  
Carol Wicks
Keyword(s):  
Return Period ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Suspended Sediments ◽  
Sediment Concentration ◽  
Bed Load ◽  
Storm Events ◽  
Total Inorganic Carbon ◽  
Stream Power ◽  
In Situ Data

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−1 and a DIC flux of 150 g s−1 at 1.4 m3 s−1 discharge. The largest storm had a return period of 7.7 months, a peak discharge of 4.6 m3 s−1, and peak PIC flux of 620 g s−1 compared to a peak DIC flux of 350 g s−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.

scholarly journals Dissolved inorganic carbon budgets in the eastern subpolar North Atlantic in the 2000s from in situ data

2015 ◽  
Vol 42 (22) ◽  
pp. 9853-9861 ◽  
Author(s):  
Patricia Zunino ◽  
Pascale Lherminier ◽  
Herlé Mercier ◽  
Xose A. Padín ◽  
Aida F. Ríos ◽  
...  
Keyword(s):  
North Atlantic ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Carbon Budgets ◽  
In Situ Data

Isotopic Composition of Dissolved Inorganic Carbon in the Great Lakes

1978 ◽  
Vol 35 (4) ◽  
pp. 422-430 ◽  
Author(s):  
R. R. Weiler ◽  
J. O. Nriagu
Keyword(s):  
Organic Matter ◽  
Great Lakes ◽  
Lake Erie ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Total Inorganic Carbon ◽  
Upper Great Lakes ◽  
Industrial Sewage ◽  
Carbon Concentrations ◽  
Isotopic Effects

Values for the δ13C of the dissolved total inorganic carbon in the Great Lakes are presented. The surface values are about two parts per thousand more negative than the values to be expected assuming equilibrium with the atmospheric CO2 reservoir. In the hypolimnion of Lake Erie, the values become more negative as the summer progresses due to the increasing amounts of CO2 from decaying organic matter. Although Lakes Erie and Ontario receive considerably larger amounts of organic carbon as domestic and industrial sewage effluents than the upper Great Lakes, their higher inorganic carbon concentrations evidently mask any isotopic effects from the decay of the organic pollutants. Models to explain the variation in the δ13C in the hypolimnion and epilimnion of a lake are presented. The agreement between predicted and observed δ13C trends for the hypolimnion model is reasonable, suggesting that the flux rates assumed in the model are reasonable for the processes occurring in the lakes. Key words: carbon isotopes, Great Lakes, inorganic carbon, models

scholarly journals Getting information on suspended sediments in a large river from acoustic backscatter

2018 ◽  
Vol 40 ◽  
pp. 04017
Author(s):  
Adrien Vergne ◽  
Céline Berni ◽  
Jérôme Le Coz
Keyword(s):  
Suspended Sediment Concentration ◽  
Spatial Information ◽  
Suspended Sediments ◽  
Sediment Concentration ◽  
Large River ◽  
Acoustic Backscatter ◽  
Qualitative Information ◽  
Sediment Size ◽  
The Common

There has been a growing interest in the last decade in extracting information on Suspended Sediment Concentration (SSC) from acoustic backscatter in rivers. Quantitative techniques are not yet effective, but acoustic backscatter already provides qualitative information on suspended sediments. In particular, in the common case of a bi-modal sediment size distribution, corrected acoustic backscatter can be used to look for sand particles in suspension and provide spatial information on their distribution throughout a river crosssection. This paper presents a case-study where these techniques have been applied.

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