Geochemistry applied to the watershed survey

Tardy, Yves; Bustillo, Vincent; Boeglin, Jean-Loup

doi:10.1016/j.apgeochem.2003.07.003

Cited by 42 publications

(7 citation statements)

References 25 publications

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“…Although the chemistry of groundwater in the lower reaches of the Tarim River is affected by various factors, the correlation among variables describing chemical components can still be established, as it was commonly done in many other researches (Xu 2002;Tardy et al 2004;Giridharan et al 2008;Chenini and Khemiri 2009;Xu et al 2010). For the purpose of comparison, this work also conducted regression analysis to examine the correlation among TDS, TS, TA, TH and some ions.…”

Section: Discussionmentioning

confidence: 98%

Statistical analysis of groundwater chemistry of the Tarim River lower reaches, Northwest China

Chen

et al. 2011

Environ Earth Sci

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This study applied a comprehensive quantitative approach including statistical, principal component and gray relation analyses to assess the groundwater chemistry based on monitored data from 840 samples collected from the lower reaches of Tarim River from 2000 to 2009. The main findings were: (1) there were six types of groundwater chemistry in the lower reaches of Tarim River where ClÁSO 4 -NaÁMg was the dominant type accounting for 73.57% in all samples. There were linear relationships among chemical parameters, where TDS had significant multiple correlations with Na ? , K ? , Mg 2? , Ca 2? and Cl -, respectively.(2) Three principal components (PC1, PC2 and PC3) were extracted. They included comprehensive measurements for salinization, alkalinity and pH, respectively. Most parameters showed decreasing trends during the period of 2000-2009, as well as the scores on PC1, because the concentrations of various chemical substances were diluted due to the uplift of the groundwater table in the lower reaches and the implementation of the ecological water delivery project in 2000. (3) HCO 3 -was the most sensitive chemical parameter affected by the groundwater table followed by TA, Mg 2? , TH, SO 4 2-, K ? , TDS and TS. PC2 was the most sensitive principal component to the change of the groundwater table followed by PC1 and PC3.

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Section: Discussionmentioning

confidence: 98%

Statistical analysis of groundwater chemistry of the Tarim River lower reaches, Northwest China

Chen

et al. 2011

Environ Earth Sci

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“…Runoff in SSR30 was smaller than SSR60, having an opposite relationship with the quantity of flow flux in SSR30 and SSR60. Even though different flow pathways existed in different rainfall events, in recent years, the hydrological community has come to a consensus that subsurface flow is generally dominated by the preferential flow of various kinds (Jones, 2010;Lin, 2010;Uhlenbrook, 2010). Subsurface preferential flow can route water through the subsurface, rather vertically and laterally.…”

Section: Runoffmentioning

confidence: 99%

“…Hydrochemical and isotopic processes of total runoff outlet are mainly affected by the solutes sources, hydrological pathways and the flow components contributions (Yang et al, 2012). Hydrochemical tracers (Uhlenbrook et al, 2002;Tardy et al, 2004) and stable isotopes (Carey et al, 2004) widely applied in hydrological science have enhanced our understanding of runoff generation processes. Environmental tracers are commonly used on a catchment scale because it is possible to determine the source areas of runoff, flow pathways, residence times and the hydraulic characteristics of flow systems.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Event-based Hydrological Processes at the Hydrohill Catchment Using Hydrochemical and Isotopic Methods

et al. 2020

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Abstract. Hydrochemical and isotopic techniques have been widely applied in hydrological sciences because isotopic tracers can identify water sources and hydrochemical tracers can discern runoff flow paths. To better understand the hydrological process, we combined hydrochemical and isotopic techniques under controlled experimental conditions to investigate hydrological process from rainfall to runoff in the Hydrohill experiment catchment, a typical artificial catchment in Chuzhou, China. Hydrochemical and isotopic data, i.e., pH, electric conductivity (EC), total dissolved solids (TDS), anions (Cl−, NO3-, SO42- and HCO3-), cations (K+, Na+, Ca2+ and Mg2+) and dissolved Si, 18O and D in water samples were collected during a rainfall event in 2016, and used to determine the hydrochemical and isotopic characteristics of rainfall and runoff components. We applied EC, TDS, SO42-, Ca2+, Mg2+, 18O and D as tracers to investigate rainfall-runoff processes in the experimental catchment. Runoff flow paths could be well identified by the relationship between 18O and EC, TDS, SO42-, Ca2+ and Mg2+. The quantity of flow flux and mass fluxes of main hydrochemical and isotopic tracers gauged at the catchment outlet shows applicable tracers (Ca2+, Mg2+, SO42-, and 18O) are mainly from deep groundwater runoff (from soil layer of 60–100 cm beneath ground surface). Contributions of the event water and pre-event water to the total runoff during the rainfall-runoff process are different. The quantitative results were very encouraging as a basis to develop hydrological models for further study.

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“…Base flow represents the groundwater contribution to streamflow (Halford & Mayer, 2000;Hall, 1968;Rutledge, 1997). Unlike streamflow rate, the direct measurement of base flow is practically impossible (e.g., Tardy et al, 2004). However, base flow plays a critical role in understanding water budgets (Arnold & Allen, 1999;Stewart et al, 2007), analyzing water cycle vulnerability to natural and anthropological effects (Tesoriero et al, 2013), improving management strategies of water supply systems and underground water protection (e.g., Wenninger et al, 2004), and implementing process-based hydrological models in an objective way (Beven, 1989;Eckhardt et al, 2002;Ferket et al, 2010;Lang et al, 2008;Willems, 2014).…”

Section: Introductionmentioning

confidence: 99%

Technical Note: An Operational Implementation of Recursive Digital Filter for Base Flow Separation

Rammal

Archambeau

Erpicum

et al. 2018

Water Resources Research

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Base flow estimation is of overwhelming importance in hydrological modeling and water resource management. One of the widely used techniques to derive base flow from measured streamflow is the recursive digital filter (RDF). Yet its application still raises methodological issues related to the determination of its parameters. In this study, we propose a practical and automatic procedure to calibrate the RDF with respect to the measured streamflow. The method operationality and robustness are first demonstrated on three gauging stations in the Ourthe catchment (Belgium). The calibrated parameters compare well with those obtained by a standard graphical approach. Next, the proposed approach is compared to the technique of conductance mass balance for two gauging stations in the Hoyoux catchment (Belgium). A fair agreement between the results of the two techniques is obtained, suggesting that the proposed automatic calibration procedure of RDF takes the base flow separation process to a higher level of practicality and transparency.

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Geochemistry applied to the watershed survey

Cited by 42 publications

References 25 publications

Statistical analysis of groundwater chemistry of the Tarim River lower reaches, Northwest China

Statistical analysis of groundwater chemistry of the Tarim River lower reaches, Northwest China

Analysis of Event-based Hydrological Processes at the Hydrohill Catchment Using Hydrochemical and Isotopic Methods

Technical Note: An Operational Implementation of Recursive Digital Filter for Base Flow Separation

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