Hydrogeochemical and isotope evidence of groundwater evolution and recharge in Minqin Basin, Northwest China

Zhu, Guijie; Li, Z.Z.; Su, Yufang; Ma, Jinzhu; Zhang, Y.Y.

doi:10.1016/j.jhydrol.2006.08.013

Cited by 155 publications

(57 citation statements)

References 15 publications

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“…Rainfall isotope time series data are commonly used to assess long-term trends in groundwater recharge (e.g. Zhu et al, 2007;Praamsma et al, 2009); however, they are rarely applied to assess event recharge of shallow aquifers (e.g. Scholl et al, 2004;Gleeson et al, 2009).…”

Section: A C King: Identifying Flood Recharge and Inter-aquifer Conmentioning

confidence: 99%

Identifying flood recharge and inter-aquifer connectivity using multiple isotopes in subtropical Australia

King

Raiber

Cendón

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract. An understanding of hydrological processes is vital for the sustainable management of groundwater resources, especially in areas where an aquifer interacts with surface water systems or where aquifer interconnectivity occurs. This is particularly important in areas that are subjected to frequent drought/flood cycles, such as the Cressbrook Creek catchment in Southeast Queensland, Australia. In order to understand the hydrological response to flooding and to identify inter-aquifer connectivity, multiple isotopes (δ 2 H, δ 18 O, 87 Sr / 86 Sr, 3 H and 14 C) were used in this study in conjunction with a comprehensive hydrochemical assessment, based on data collected 6 months after severe flooding in 2011. The relatively depleted stable isotope signatures of the flood-generating rainfall (δ 2 H: −30.2 to −27.8 ‰, δ 18 O: −5.34 to −5.13 ‰ VSMOW) were evident in surface water samples (δ 2 H: −25.2 to −23.2 ‰, δ 18 O: −3.9 to −3.6 ‰ VSMOW), indicating that these extreme events were a major source of recharge to the dam in the catchment headwaters. Furthermore, stable isotopes confirmed that the flood generated significant recharge to the alluvium in the lower part of the catchment, particularly in areas where interactions between surface waters and groundwater were identified and where diffuse aquifer recharge is normally limited by a thick (approximately 10 m) and relatively impermeable unsaturated zone. However, in the upper parts of the catchment where recharge generally occurs more rapidly due to the dominance of coarse-grained sediments in the unsaturated zone, the stable isotope signature of groundwater resembles the longer-term average rainfall values (δ 2 H: −12.6, δ 18 O: −3.4 ‰ VSMOW), highlighting that recharge was sourced from smaller rainfall events that occurred subsequent to the flooding. Interactions between the bedrock aquifers and the alluvium were identified at several sites in the lower part of the catchment based on 87 Sr / 86 Sr ratios; this was also supported by the hydrochemical assessment, which included the modelling of evaporation trends and saturation indices. The integrated approach used in this study facilitated the identification of hydrological processes over different spatial and temporal scales, and the method can be applied to other complex geological settings with variable climatic conditions.

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Section: A C King: Identifying Flood Recharge and Inter-aquifer Conmentioning

confidence: 99%

Identifying flood recharge and inter-aquifer connectivity using multiple isotopes in subtropical Australia

King

Raiber

Cendón

et al. 2015

Hydrol. Earth Syst. Sci.

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“…This may indicate that high Br contents are so far to be related to natural sources. Consequently, these high Br concentrations are probably related the agricultural land-use patterns and lend support to the significance of the contamination by rejection of treated and non-treated waste water; and return flow from irrigation water that include high amounts of fertilizer and pesticides such as methyl bromides and other organic bromyl (Zhu et al 2007). …”

Section: Strontium and Bromidementioning

confidence: 92%

Hydrochemical Investigation of Groundwater Contamination in the Grombalia Shallow Aquifer, Cap Bon Peninsula, Tunisia: Impact of Irrigation with Industrial Waste Water

Moussa¹,

Zouari²

2011

Waste Water - Evaluation and Management

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“…Shortages in water resources represent a serious problem in many areas of the planet particularly within semi-arid and arid regions [1,2]. Northwestern China, characterized by low precipitation, high temperatures, and high rates of evapotranspiration is a classic example.…”

Section: Introductionmentioning

confidence: 99%

“…The majority of these analyses have focused on the Zhangye, Ejina, Minqin, and Dunhuang Basins [1,2,7,13,[31][32][33]. For instance, Feng et al [31] and Wang et al [13] studied the hydrochemical evolution and residence time of groundwater in the Zhangye and Ejina Basins, respectively.…”

Section: Introductionmentioning

confidence: 99%

The Source, Flow Rates, and Hydrochemical Evolution of Groundwater in an Alluvial Fan of Qilian Mountain, Northwest China

Guo

Zhou

Wang

2017

Water

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Major ions and selected environmental tracers (D, 18 O, 3 H and chlorofluorocarbons (CFCs)) were employed to determine the source, flow rates, and hydrochemical evolution of groundwater in an alluvial fan along the front of the Qilian Mountains, which serves as an important groundwater reservoir in northwest China. Temporal and spatial variations in ion concentrations were limited near the upper portion of the alluvial fan. However, groundwater quality deteriorated along the flow path as concentrations of Mg 2+ , Na + , SO 4 2− , and Cl − increased toward the fan toe and into the center of the valley. The relative abundance of the major cations and anions also changed down-fan from Ca 2+ to Na + and Mg 2+ , and from HCO 3 − to SO 4 2− and Cl − , respectively. Isotopic data suggests that precipitation within the Qilian Mountains, which recharged the alluvial deposits near the mountain front, was the primary source of groundwater. Apparent groundwater ages determined by CFCs varied from 23 to 40 years, and in general, increased in age from south to north (down-fan). It is concluded that groundwater in the study area was recharged by the Qilian Mountains, flowed through the alluvial fan from south to north, and was subsequently discharged several decades later from springs located along the toe of the fan, after which it re-entered the Shule River.

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Hydrogeochemical and isotope evidence of groundwater evolution and recharge in Minqin Basin, Northwest China

Cited by 155 publications

References 15 publications

Identifying flood recharge and inter-aquifer connectivity using multiple isotopes in subtropical Australia

Identifying flood recharge and inter-aquifer connectivity using multiple isotopes in subtropical Australia

Hydrochemical Investigation of Groundwater Contamination in the Grombalia Shallow Aquifer, Cap Bon Peninsula, Tunisia: Impact of Irrigation with Industrial Waste Water

The Source, Flow Rates, and Hydrochemical Evolution of Groundwater in an Alluvial Fan of Qilian Mountain, Northwest China

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