Groundwater age dating using single and time-series data of environmental tritium in the Moeda Synclyne, Quadrilátero Ferrífero, Minas Gerais, Brazil

Silva, Aurélio; Cota, Stela Dalva Santos

doi:10.1016/j.jsames.2020.103009

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…The CM is attractive since the required monitoring tritium data can be freely obtained from GNIP, and the reconstruction process is relatively simple. This approach has already been used by different authors in the past with satisfactory results (Albero & Panarello, 1981;Jerbi et al, 2019;Michel, 1989;Michel et al, 2018;Silva & Cota, 2021;Zhai et al, 2013). Moreover, this method is also the source of the US tritium input functions included in the database of the Excel ® workbook TracerLPM (Jurgens et al, 2012), which is a very useful tool for modelling multitracer ages but does not include tritium input curves for the Southern Hemisphere.…”

Section: Methods Selectionmentioning

confidence: 99%

“…Several examples of tritium applications in South‐America can be mentioned, such of those in hydrological (Martinez et al, 2017), hydrogeological (da Silva et al, 2020; Martinez et al, 2016), or the use of South‐American information for atmospheric applications (Aggarwal et al, 2016). Contemporary natural concentrations (0.5–30 TU) observed in South‐America (Martinez et al, 2017; Silva & Cota, 2021), are often below the detection limit of modern Liquid Scintillation Counters, which is the reason why pre‐concentration via electrolytic enrichment is typically applied (Copia et al, 2020; GNIP, 2021; Östlund & Werner, 1962; Taylor, 1976).…”

Section: Introductionmentioning

confidence: 99%

“…Tritium contents of a hydrologic system are a function of the input value, mixing of waters and the radioactive decay (Maduabuchi et al, 2006;Michel et al, 2018); therefore, the knowledge of the 3 H input function is a necessary requirement, as is exemplified in many hydrologic studies (Ba & Xu, 2010;Jerbi et al, 2019;Silva & Cota, 2021;Zhai et al, 2013). The tritium input in the hydrologic cycle corresponds mainly to the content in the precipitation, which has varied over time due to strong changes introduced by anthropogenic sources, especially thermonuclear weapons tests that took place during the beginning of the second half of the 20th century (Aggarwal et al, 2016).…”

mentioning

confidence: 99%

“…Examples of application of these methods, mostly restricted to specific regions, can be found in Ba and Xu (2010) in the North Pacific, Zhai et al (2013) and Li and Si (2018) in China, Michel et al (2018) in the United States, and Jerbi et al (2019) in Tunisia. In South America, 3 H input functions were calculated for Cochabamba, Bolivia, by Stimson et al (1996) applying an extrapolation method and for an area of the state of Mina Gerais, Brazil, by Silva and Cota (2021) using correlation and triangulation methods. These works for South America correspond to zones in the tropical area, but complete 3 H input functions for the large southern sector are still not available.…”

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confidence: 99%

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Reconstruction of the record of tritium in precipitation in the temperate zone of South America

Basaldúa

Alcaraz

Londoño

et al. 2022

Hydrological Processes

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Tritium, a radioisotope of hydrogen, is an ideal tracer for groundwater and surface dating and tracking since it is part of the water molecule. The knowledge of the history of tritium in precipitation and recharge is the key link for the calculation of groundwater tritium age. However, records of tritium in precipitation are usually sparse and discontinuous, especially in regions like South America, and often need to be reconstructed. To solve this problem, different reconstruction methods of the tritium input function have been analysed and compared. Clustering of Global Network of Isotopes in Precipitation stations by regions and the correlation with the complete and continuous data recorded in Kaitoke (New Zealand) proved to be the most effective approach, having low relative errors and a much more extended coverage in time compared to other interpolation or reference curves methods. Thus, tritium time series for five different regions of the temperate zone of South America were obtained. These curves can be used as representative tritium input curves in future studies for these regions. The results obtained also allow a quick qualitative analysis of groundwater ages in these areas, based on their current or past tritium concentrations. In addition, they contributed to the understanding of the patterns and characteristics of tritium distribution in the atmosphere of the southern sector of South

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Section: Methods Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Reconstruction of the record of tritium in precipitation in the temperate zone of South America

Basaldúa

Alcaraz

Londoño

et al. 2022

Hydrological Processes

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“…In this view, the use of tritium analyses could be useful to date (Guo et al, 2019;Silva and Cota, 2020) and characterize different aquifers (Morgenstern et al, 2010(Morgenstern et al, , 2015Jerbi et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Characterization of groundwater recharge through tritium measurements

et al. 2022

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Abstract. After the nuclear weapons testing in the 1950s and 1960s, the atmospheric tritium levels have almost returned to natural levels (pre-1950 levels), which means that tritium is becoming more effective in determining transit times in hydrological systems. It has also been demonstrated that tritium is a non-reactive noble gas and in water is not subject to chemical reactions, absorption, or dissolution/precipitation processes, so it is conservative of the geochemical fingerprint of the source. In addition, it is used as an effective tracer of water contamination by landfill leachate, allowing to detect mixing percentages of the leachate up to levels not achievable with normal chemical analyses (less than 1 %). The purpose of the present work is to deepen the knowledge of the hydrogeochemical characteristics of the aquifers in the pedemontana area of the Venetian plain, and to formulate a conceptual framework of underground water circulation, aimed at understanding phenomena of contamination by toxic metals, harmful to human health. Tritium concentration analyses were performed on selected samples of groundwater collected in different wells in the south part of Treviso city to correlate the young age of the water recharge. The abundance of young waters, in fact, indicates a vulnerability of the aquifer to climate change with respect to possible contributions of surface waters, in particular to prolonged drought periods which could induce salinization dynamics.

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Establishing a water baseline for the unconventional gas industry: A multiple environmental isotopes assessment (18O, 2H, 3H, 13C, and 14C) of surface and groundwater in the São Francisco Basin, Brazil

Lima,

de Carvalho Filho,

Ferreira

et al. 2023

Applied Geochemistry

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Groundwater age dating using single and time-series data of environmental tritium in the Moeda Synclyne, Quadrilátero Ferrífero, Minas Gerais, Brazil

Cited by 4 publications

References 20 publications

Reconstruction of the record of tritium in precipitation in the temperate zone of South America

Reconstruction of the record of tritium in precipitation in the temperate zone of South America

Characterization of groundwater recharge through tritium measurements

Establishing a water baseline for the unconventional gas industry: A multiple environmental isotopes assessment (18O, 2H, 3H, 13C, and 14C) of surface and groundwater in the São Francisco Basin, Brazil

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