Influence of pre-event water on streamflow in a granitic watershed using hydrograph separation

Kim, Hyerin; Cho, Sung Hyun; Lee, Dongguen; Jung, Youn Young; Kim, Young Hee; Koh, Dong‐Chan; Lee, Jeong-Hoon

doi:10.1007/s12665-017-6402-6

Cited by 17 publications

(11 citation statements)

References 35 publications

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“…The compiled studies are biased toward storm events, when event (not pre‐event) water fractions are expectedly high. For example, among studies reporting pre‐event water fractions that are (a) representative only for peak flow, versus (b) representative for span of the hydrograph, pre‐event water fractions are nearly always lower during peak flow (i.e., scenario (a); e.g., Bazemore et al, ; Buttle et al, ; Carey & Quinton, ; Kim et al, ; Table ).…”

Section: Groundwater Discharges To Riversmentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

213

124

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Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify molecular movements and chemical reactions governing groundwater recharge, quality, storage, flow, and discharge. Here, commonly applied approaches to isotopic data analysis are reviewed, involving groundwater recharge seasonality, recharge elevations, groundwater ages, paleoclimate conditions, and groundwater discharge. Reviewed works confirm and quantify long held tenets: (i) that recharge derives disproportionately from wet season and winter precipitation; (ii) that modern groundwaters comprise little global groundwater; (iii) that “fossil” (>12,000‐year‐old) groundwaters dominate global aquifer storage; (iv) that fossil groundwaters capture late‐Pleistocene climate conditions; (v) that surface‐borne contaminants are more common in younger groundwaters; and (vi) that groundwater discharges generate substantial streamflow. Groundwater isotope data are disproportionately common to midlatitudes and sedimentary basins equipped for irrigated agriculture, but less plentiful across high latitudes, hyperarid deserts, and equatorial rainforests. Some of these underexplored aquifer systems may be suitable targets for future field testing.

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Section: Groundwater Discharges To Riversmentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

213

124

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“…Isotopic hydrograph separation using stable isotopes in water and nitrate provides a useful tool for determining the water flowpath and the source of nitrates. This approach has been widely used to understand the proportion of different water sources contributing to stream water, which can be used to infer the flowpath and residence time [13][14][15][16]. In particular, distinguishing between nitrate sources such as direct atmospheric deposition or biological assimilation and release in the soil zone may reveal the flowpath of groundwater into stream or river water [12].…”

Section: Introductionmentioning

confidence: 99%

“…To this end, studies on stable water isotopes in the atmospheric source must first be conducted in order to form a basis for understanding and predicting the movement of contaminants in the groundwater flowpath [16]. For the past 40 years, many studies have been conducted using the hydrograph separation technique through stable water isotopes or conservative chemical tracers to investigate the movement of water components such as groundwater, rainfall, snowmelt, and soil water in the stream water [16,[19][20][21][22][23][24][25][26]. In particular, Ladouche et al [20] investigated the streamflow components using hydrograph separation with stable water isotopes, major chemical parameters, and dissolved organic carbon (DOC).…”

Section: Introductionmentioning

confidence: 99%

“…Dahlke et al [22] used the value of the stable oxygen isotope (δ 18 O) of water to indicate that the majority of storm runoff was dominated by pre-event water in the 30% glaciated sub-arctic catchment of Tarfala, northern Sweden. Later, Rahman et al [24] conducted an end-member mixing analysis to describe the daily variation of runoff components in the Alpine watershed, and Kim et al [16] used chemical and isotopic tracers to identify the impact of the pre-event water component of a granitic watershed with a thin soil layer.…”

Section: Introductionmentioning

confidence: 99%

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Stable Isotopes of Water and Nitrate for the Identification of Groundwater Flowpaths: A Review

Jung

Koh

Kim³

et al. 2020

Water

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Nitrate contamination in stream water and groundwater is a serious environmental problem that arises in areas of high agricultural activities or high population density. It is therefore important to identify the source and flowpath of nitrate in water bodies. In recent decades, the dual isotope analysis (δ15N and δ18O) of nitrate has been widely applied to track contamination sources by taking advantage of the difference in nitrogen and oxygen isotope ratios for different sources. However, transformation processes of nitrogen compounds can change the isotopic composition of nitrate due to the various redox processes in the environment, which often makes it difficult to identify contaminant sources. To compensate for this, the stable water isotope of the H2O itself can be used to interpret the complex hydrological and hydrochemical processes for the movement of nitrate contaminants. Therefore, the present study aims at understanding the fundamental background of stable water and nitrate isotope analysis, including isotope fractionation, analytical methods such as nitrate concentration from samples, instrumentation, and the typical ranges of δ15N and δ18O from various nitrate sources. In addition, we discuss hydrograph separation using the oxygen and hydrogen isotopes of water in combination with the nitrogen and oxygen isotopes of nitrate to understand the relative contributions of precipitation and groundwater to stream water. This study will assist in understanding the groundwater flowpaths as well as tracking the sources of nitrate contamination using the stable isotope analysis in combination with nitrate and water.

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“…Cl − is a suitable tracer in this study because of limited human activities and geological sources in the study catchment. Various studies applying a hydrograph separation have employed Cl − as a tracer for calculations (e.g., Kim et al, ; McHale, McDonnell, Mitchell, & Cirmo, ), whereas no studies have used SF 6 as a tracer. However, it is known that both Cl − and SF 6 are conservative tracers that only change by mixing with other water sources in the groundwater flow system (Busenberg & Plummer, ; Dogramaci, Firmani, Hedley, Skrzypek, & Grierson, ).…”

Section: Methodsmentioning

confidence: 99%

Effectivity of dissolved SF₆ tracer for clarification of rainfall–runoff processes in a forested headwater catchment

Sakakibara

Tsujimura

Iwagami

et al. 2019

Hydrological Processes

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Understanding rainfall‐runoff processes is crucial for prevention and prediction of water‐related natural disasters. Sulfur hexafluoride (SF6) is a potential tracer, but few researches have applied it for rainfall‐runoff process studies. We observed multiple tracers including SF6 in spring water at 1‐ to 2‐hr intervals during rainstorm events to investigate the effectivity of SF6 tracer in rainfall–runoff studies through the clarification of rainfall–runoff process. The target spring is a perennial spring in a forested headwater catchment with an area of 0.045 km2 in Fukushima, Japan. The relationship between the SF6 concentration in spring water and the spring discharge volume was negative trend; the SF6 concentration in spring water becomes low as the spring discharge volume increases especially during rainstorms. The hydrograph separation using SF6 and chloride ion tracers was applied for determining the contribution of principal sources on rainfall–runoff water. It suggested more than 60% contribution of bedrock groundwater at the rainfall peak and high percentage contribution continued even in the hydrograph recession phase. Based on observed low SF6 concentration in groundwater after heavy rainfall, the replacement of groundwater near the spring with bedrock groundwater is indicated as a mechanism for water discharge with low SF6 concentration during rainfall events. Consequently, rainstorm events play an important role as triggers in discharging water stored in the deeper subsurface area. In addition, SF6 tracer is concluded as one of the strongest tracers for examining rainfall–runoff process studies. And, therefore, this study provided new insights into the dynamics of groundwater and its responses to rainfall in terms of SF6 concentration variance in water in headwater regions.

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Influence of pre-event water on streamflow in a granitic watershed using hydrograph separation

Cited by 17 publications

References 35 publications

Global Isotope Hydrogeology―Review

Global Isotope Hydrogeology―Review

Stable Isotopes of Water and Nitrate for the Identification of Groundwater Flowpaths: A Review

Effectivity of dissolved SF₆ tracer for clarification of rainfall–runoff processes in a forested headwater catchment

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Influence of pre-event water on streamflow in a granitic watershed using hydrograph separation

Cited by 17 publications

References 35 publications

Global Isotope Hydrogeology―Review

Global Isotope Hydrogeology―Review

Stable Isotopes of Water and Nitrate for the Identification of Groundwater Flowpaths: A Review

Effectivity of dissolved SF6 tracer for clarification of rainfall–runoff processes in a forested headwater catchment

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Effectivity of dissolved SF₆ tracer for clarification of rainfall–runoff processes in a forested headwater catchment