Genesis of salinized groundwater in Quaternary aquifer system of coastal plain, Laizhou Bay, China: Geochemical evidences, especially from bromine stable isotope

Du, Yao; Ma, Teng; Chen, Liuzhu; Shan, Huimei; Xiao, Chenchao; Lu, Yu; Liu, Cunfu; Cai, Huayang

doi:10.1016/j.apgeochem.2015.04.017

Cited by 60 publications

(16 citation statements)

References 42 publications

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“…This further indicated that surface water availability in the area was affected by atmospheric precipitation, groundwater, and water diversion from the Yellow River. The slope of LMWL (7.36) was slightly smaller than the slope of the global atmospheric precipitation line GMWL (8.0) [35], similar to that reported by Du et al [41] for Laizhou Bay. The ISOsource model was established based on δD- 18 O dual-isotope and the source and contribution ratios of surface water analyzed (Figure 4a).…”

Section: Heavy Rains Changed the Relationship Of Surface Water Replenishmentsupporting

confidence: 88%

Strong Precipitation and Human Activity Spur Rapid Nitrate Deposition in Estuarine Delta: Multi-Isotope and Auxiliary Data Evidence

Xie

Huang

et al. 2021

IJERPH

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The intensive development of the Yellow River Delta has caused huge transportation of non-point pollutants into the Bohai Sea through source river estuaries and thus poses a considerable threat to eco-environmental security in the region. Long-term irrigation in the Yellow River basin, with occasional heavy rainfall and the related effects of ensuring hydrological processes and human activities in terms of nitrate N transport via surface water systems, is unclear. Using stable isotope (δ2H-H2O and δ18O-H2O, δ15N-NO3− and δ18O- NO3−) and auxiliary geographic data, the ISO source model was run to quantitatively analyze the supply relationship of river systems and the rapid change in the spatial pattern of nitrate N due to heavy rainfall in the estuarine delta. This analysis made clear the dominant contribution of agricultural activities and urbanization to NO3−-N emission, on which basis refined management measures were proposed to deal with NO3− in surface water from the “source-process”. The results of the study show that: (1) The relationship of surface water replenishment in the Yellow River Delta was affected not only by rainfall, irrigation, and other water conservancy measures but also the proportion of water from Yellow River flow declined from the source to estuary; (2) To a certain extent, rainfall diluted the concentration of nitrate N in the river and increased instantaneous flux of nitrate N into the sea, where nitrate N flux continuously increased from upstream to downstream; (3) The rapid deposition of nitrate in the estuary delta was driven by heavy rainfall and human activities such as excessive use of nitrogen fertilizers, rapid urbanization, and livestock waste discharge, and; (4) Scientific measures were needed to realize the interactive effect of the output of non-point source pollutants and the carrying and absorption capacity of coastal fragile ecosystems of the exogenous inputs.

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Section: Heavy Rains Changed the Relationship Of Surface Water Replenishmentsupporting

confidence: 88%

Strong Precipitation and Human Activity Spur Rapid Nitrate Deposition in Estuarine Delta: Multi-Isotope and Auxiliary Data Evidence

Xie

Huang

et al. 2021

IJERPH

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“…Freshwater salinization significantly affected drinking water resources (Bouderbala et al, 2016) and destroyed infrastructure (Bhuiyan & Dutta, 2012), while harming ecosystems (Yang & Steward, 2012). Based on studying the causes (Du et al, 2015; Zghibi et al, 2014), processes (Bauer et al, 2006; Du et al, 2015; Li, Wang, et al, 2019), influencing factors (Holding & Allen, 2015; Murgulet et al, 2016; Vithanage et al, 2012) and hazards (Buchwalter et al, 2019; Han et al, 2020; Nogueira et al, 2015; Nowghani et al, 2019) of freshwater salinization, researchers assessed the future changes of quality and content of freshwater (Le et al, 2019; Mabrouk et al, 2018; Zamrsky et al, 2020), proposed measures to control freshwater salinization (e.g., optimizing freshwater use through simulation or aquifer recharging with river freshwater; Alaghmand et al, 2014; Aydin et al, 2019; Wu et al, 2020). Most studies on coastal groundwater salinization found massive exploitation and saltwater intrusion as its main causes, while fewer others found an increase in salinity affected by road salinity, sewage, mining and agricultural fertilizers (Evans et al, 2018; Leroux & Dahlin, 2006; Likens & Buso, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Global warming, melting of polar glaciers and thermal expansion of upper seawater as the main components (Oude Essink et al, 2010; Werner et al, 2013; Yu et al, 2016). Groundwater overexploitation in coastal areas has led to groundwater level decline (Du et al, 2015; Nguyen et al, 2005; Petalas & Lambrakis, 2006; Zghibi et al, 2014) resulting in brackish water boundary movement towards land. Therefore, analysing seawater intrusion (Abdulameer et al, 2018; Du et al, 2015) helped to assess the spatial–temporal evolution and future trend of seawater intrusion through historical data and modelling (Giménez‐Forcada, 2014; Oude Essink et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Groundwater overexploitation in coastal areas has led to groundwater level decline (Du et al, 2015; Nguyen et al, 2005; Petalas & Lambrakis, 2006; Zghibi et al, 2014) resulting in brackish water boundary movement towards land. Therefore, analysing seawater intrusion (Abdulameer et al, 2018; Du et al, 2015) helped to assess the spatial–temporal evolution and future trend of seawater intrusion through historical data and modelling (Giménez‐Forcada, 2014; Oude Essink et al, 2010). Several measures (e.g., controlling groundwater exploitation, increasing groundwater recharge, building underground dams) have been recommended to address the problem (Chang et al, 2019; Pettenati et al, 2013; Zammouri et al, 2007), as well as developing of new numerical models to simulate seawater intrusion into fresh aquifers (Arfib & de Marsily, 2004; Nguyen et al, 2005), usually considered complex to simulate because of the influence of heterogeneous geology.…”

Section: Discussionmentioning

confidence: 99%

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Restoration strategies for water and salt transport in saline soils: A 20‐year bibliometric analysis

Shi

Yin

et al. 2022

Soil Use and Management

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“…The following sentences present the approximate bed slope values of different coastal aquifers according to published papers and reports: Nile Delta aquifer (Egypt) 0.30-0.40% [51], Cyprus aquifer (Carpus) 1.7% [52]), Mediterranean aquifer (Mediterranean coastal area) 1.0% [53], Gaza aquifer (Palestine) 1.33% [54], Tripoli aquifer (Libya) 2.0-2.5% [55], Buraydah aquifer (Saudi Arabia) 0.72% [56], Laizhou bay aquifer (China) 0.27% [57], Biscayne aquifer (USA) 0.0% [58], Karst Coastal aquifer (Central Italy) 0.0% [59], Gulf coastal aquifer (USA) 1.46% [60], Ethiopian coastal aquifer (Ethiopia) 1.25% [61], Maryland coastal aquifer (USA), 1.26% [62], Germasogeia aquifer (Cyprus) 1.0% [63], Ravenna aquifer (Italy) 0.1% [64], North Carolina aquifer (USA) 0.55% [65], and Hypothetical aquifer (from −244% to 2%) [49].…”

Section: Introductionmentioning

confidence: 99%

Underground Barrier Wall Evaluation for Controlling Saltwater Intrusion in Sloping Unconfined Coastal Aquifers

Armanuos

Al‐Ansari

Yaseen‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

2020

Water

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Barrier walls are considered one of the most effective methods for facilitating the retreat of saltwater intrusion (SWI). This research plans to examine the effect of using barrier walls for controlling of SWI in sloped unconfined aquifers. The sloping unconfined aquifer is considered with three different bed slopes. The SEAWAT model is implemented to simulate the SWI. For model validation, the numerical results of the seawater wedge at steady state were compared with the analytical solution. Increasing the ratio of flow barrier depth (db/d) forced the saltwater interface to move seaward and increased the repulsion ratio (R). With a positive sloping bed, further embedding the barrier wall from 0.2 to 0.7 caused R to increase from 0.3% to 59%, while it increased from 1.8% to 41.7% and from 3.4% to 46.9% in the case of negative and horizontal slopes, respectively. Embedding the barrier wall to a db/d value of more than 0.4 achieved a greater R value in the three bed-sloping cases. Installing the barrier wall near the saltwater side with greater depth contributed to the retreat of the SWI. With a negative bed slope, moving the barrier wall from Xb/Lo = 1.0 toward the saltwater side (Xb/Lo = 0.2) increased R from 7.21% to 68.75%, whereas R increased from 5.3% to 67% for the horizontal sloping bed and from 5.1% to 64% for the positive sloping bed. The numerical results for the Akrotiri coastal aquifer confirm that the embedment of the barrier wall significantly affects the controlling of SWI by increasing the repulsion ratio (R) and decreasing the SWI length ratio (L/La). Cost-benefit analysis is recommended to determine the optimal design of barrier walls for increasing the cost-effectiveness of the application of barrier walls as a countermeasure for controlling and preventing SWI in sloped unconfined aquifers.

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Genesis of salinized groundwater in Quaternary aquifer system of coastal plain, Laizhou Bay, China: Geochemical evidences, especially from bromine stable isotope

Cited by 60 publications

References 42 publications

Strong Precipitation and Human Activity Spur Rapid Nitrate Deposition in Estuarine Delta: Multi-Isotope and Auxiliary Data Evidence

Strong Precipitation and Human Activity Spur Rapid Nitrate Deposition in Estuarine Delta: Multi-Isotope and Auxiliary Data Evidence

Restoration strategies for water and salt transport in saline soils: A 20‐year bibliometric analysis

Underground Barrier Wall Evaluation for Controlling Saltwater Intrusion in Sloping Unconfined Coastal Aquifers

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