Using 18 O/ 2 H, 3 H/ 3 He, 85 Kr and CFCs to determine mean residence times and water origin in the Grazer and Leibnitzer Feld groundwater bodies (Austria)

Králík, Martin; Humer, Franko; Fank, Johann; Harum, Till; Klammler, Gernot; Gooddy, Daren C.; Sültenfuß, Jürgen; Gerber, Christoph; Purtschert, Roland

doi:10.1016/j.apgeochem.2014.04.001

Cited by 23 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For catchment areas in the range 10-200 km 2 , TT estimates were between 3 and 157 years (n = 39; median 12 years; data presented in Stewart et al (2010) supplemented with later papers by Morgenstern et al (2010), Kralik et al (2014) and Cartwright and Morgenstern (2015)). While our results compare relatively well to the literature, estimates can vary greatly even within single catchments (e.g.…”

Section: Identification Of An Older Component In Streamflowmentioning

confidence: 99%

“…Zuber et al, 2005;Stewart and Thomas, 2008;Einsiedl et al, 2009;Manning et al, 2012;Blavoux et al, 2013) and for the assessment of TT in surface water studies (Matsutani et al, 1993;Stewart et al, 2007;Morgenstern et al, 2010;Stolp et al, 2010;Stewart, 2012;Gusyev et al, 2013;Kralik et al, 2014). Most of these studies had to assume stationarity of the observed system by deriving a unique estimate of TT or RT from 3 H time-series data, in order to circumvent the bomb pulse issue.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Time series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream

Duvert

Stewart

Cendón

et al. 2016

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract.A major limitation to the assessment of catchment transit time (TT) stems from the use of stable isotopes or chloride as hydrological tracers, because these tracers are blind to older contributions. Yet, accurately capturing the TT of the old water fraction is essential, as is the assessment of its temporal variations under non-stationary catchment dynamics. In this study we used lumped convolution models to examine time series of tritium, stable isotopes and chloride in rainfall, streamwater and groundwater of a catchment located in subtropical Australia. Our objectives were to determine the different contributions to streamflow and their variations over time, and to understand the relationship between catchment TT and groundwater residence time. Stable isotopes and chloride provided consistent estimates of TT in the upstream part of the catchment. A young component to streamflow was identified that was partitioned into quickflow (mean TT ≈ 2 weeks) and discharge from the fractured igneous rocks forming the headwaters (mean TT ≈ 0.3 years). The use of tritium was beneficial for determining an older contribution to streamflow in the downstream area. The best fits between measured and modelled tritium activities were obtained for a mean TT of 16-25 years for this older groundwater component. This was significantly lower than the residence time calculated for groundwater in the alluvial aquifer feeding the stream downstream (≈ 76-102 years), emphasising the fact that water exiting the catchment and water stored in it had distinctive age distributions. When simulations were run separately on each tritium streamwater sample, the TT of old water fraction varied substantially over time, with values averaging 17 ± 6 years at low flow and 38 ± 15 years after major recharge events. This counterintuitive result was interpreted as the flushing out of deeper, older waters shortly after recharge by the resulting pressure wave propagation. Overall, this study shows the usefulness of collecting tritium data in streamwater to document short-term variations in the older component of the TT distribution. Our results also shed light on the complex relationships between stored water and water in transit, which are highly non-linear and remain poorly understood.

show abstract

Section: Identification Of An Older Component In Streamflowmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Time series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream

Duvert

Stewart

Cendón

et al. 2016

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Owing to the residence time of groundwater, it is necessary to relate the present nitrate concentration with land use when groundwater recharge occurs. Estimates of groundwater age have been used in many studies to identify the impacts of past and present land use practices on water quality (MacDonald et al, 2003;Broers, 2004;Moore et al, 2006;Stadler et al, 2008;Cao et al, 2013;Kralic et al, 2014). The combination of environmental tracers (e.g.…”

Section: Introductionmentioning

confidence: 99%

Factors contributing to nitrate contamination in a groundwater recharge area of the North China Plain

Wang

Tang

Song

et al. 2016

Hydrological Processes

View full text Add to dashboard Cite

Abstract:Nitrate contamination is a common problem in groundwater of the North China Plain (NCP) owing to overuse of fertilizers and discharge of wastewater. Accordingly, it is important to investigate nitrate contamination in recharge areas to understand the fate of nitrate in the plains area. In this study, the spatial and temporal distribution characteristics of nitrate and factors contributing to its sources and transformation in shallow groundwater of the Beiyishui River watershed, NCP, were analysed by a combination of multiple regression and multi-tracer methods. The nitrate concentration of 79% of the samples exceeded the natural environmental standard of 13.3 mg l À1 , while that of 23% of the samples exceeded the World Health Organization (WHO) drinking water standard of 50 mg l À1 . Groundwater age estimation of the hill regions based on chlorofluorocarbons (CFCs) revealed a mix of young water from 1982 to 1990 and old, low CFC water. The analysis based on the variations in land use in past years revealed that part of the grassland was converted into woodland between 1980 and 1995; therefore, the land use at the recharge time was used to determine which surface conditions influence groundwater nitrate concentrations. Multiple regression analysis showed that point source pollution contributed to the high concentration of nitrate in the hill region. Fertilizer application associated with land use change from grassland to woodland was also related to the present nitrate concentration. In the plains area, the contribution of fresh water from fault fractures and denitrification led to 31 to 72% and 6 to 51% reductions in nitrate concentrations, respectively. Our results suggested that controlling point source contamination and fertilizer input to hilly regions of the study will prevent groundwater of the plains area from deterioration in future years by mixing fresh water into the aquifers and decreasing denitrification, and therefore nitrate concentrations.

show abstract

“…Some caveats are the result of hydrogeology. For CFCs and 14 C additional uncertainties of the infiltration conditions influence the resulting ages.Therefore the combination of several tracer methods in parallel is highly preferable to the use of a single method (Szabo et al, 1996;Beyerle et al, 1999;Plummer et al, 2001;Corcho Alvarado et al, 2005, 2007Massmann et al, 2008;Solomon et al, 2010;Mayer et al, 2014;Kralik et al, 2014;Delbart et al, 2014;Battle-Aguilar et al, 2017). Ideally measured tracer concentrations in a groundwater can be matched simply to a particular year of recharge.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Underground renewal time and mixing of the main mineral waters of Tunisia: A multi-tracer study

Jean‐Baptiste

Fourré

Gaubi

et al. 2017

Applied Geochemistry

View full text Add to dashboard Cite

International audienceBottled waters are increasingly popular in Tunisia. Most of them come from groundwaters, thus raising the question of the long-term availability of the mineral groundwater resources. Water collected from production springs or wells of eleven mineral waters of Tunisia among the main commercial brands were analyzed for tritium (3H), helium-3, SF6, CFCs and carbon-14. Tracer-tracer plots indicate that all of the groundwaters of our data set are a mixture of modern rainwater with older groundwater flow waters that are beyond the time-scale of the transient tracers. 14C data suggest that the age of these old waters, which constitute the main water reservoir, is of the order of radiocarbon half-life or more. Most of the studied sites have groundwater renewal times in the range 50–150 years. For the sites where tracer concentrations are the most diluted by old waters, this value logically increase to several centuries

show abstract

Using 18 O/ 2 H, 3 H/ 3 He, 85 Kr and CFCs to determine mean residence times and water origin in the Grazer and Leibnitzer Feld groundwater bodies (Austria)

Cited by 23 publications

References 21 publications

Time series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream

Time series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream

Factors contributing to nitrate contamination in a groundwater recharge area of the North China Plain

Underground renewal time and mixing of the main mineral waters of Tunisia: A multi-tracer study

Contact Info

Product

Resources

About