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Shyu*, G.; Cheng, B.; Chiang, C.; Yao, P.; Chang, T. |
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Applying factor analysis combined with kriging and information entropy theory for mapping and evaluating the stability of groundwater quality variation in Taiwan |
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2011 |
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Int. J. Environ. Res. Public Health |
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8 |
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1084-1109 |
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CUT @ phaedon.kyriakidis @ Shyu2011 |
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123 |
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Author |
Nas, B. |
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Title |
Geostatistical approach to assessment of spatial distribution of groundwater quality |
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Journal Article |
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2009 |
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Polish J. of Environ. Stud. |
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18 |
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6 |
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1073-1082 |
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CUT @ phaedon.kyriakidis @ nas2009 |
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109 |
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Park, H.; Schlesinger, W. |
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Title |
Global biochemical cycle of boron |
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Journal Article |
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2002 |
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Global Biogeochemical Cycles |
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16 |
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1072 |
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The global Boron (B) cycle is primarily driven by a large flux (1.44 Tg B/yr) through the atmosphere derived from seasalt aerosols. Other significant sources of atmospheric boron include emissions during the combustion of biomass (0.26-0.43 Tg B/yr) and coal, which adds 0.20 Tg B/yr as an anthropogenic contribution. These known inputs to the atmosphere cannot account for the boron removed from the atmosphere during rainfall (3.0 Tg B/yr) and estimated dry deposition (1.3-2.7 Tg B/yr). In addition to atmospheric deposition, rock weathering is a source of boron (0.19 Tg B/yr) for terrestrial ecosystems, and humans mine about 0.31 Tg B/yr from the Earth's crust. More than 4.8 Tg B/yr circulates in the biogeochemical cycle of land plants, and about 0.53-0.63 Tg B/yr is carried from land to sea by rivers. The biogeochemical cycle of boron in the sea includes 4.4 Tg B/yr circulating in the marine biosphere, and an annual loss of 0.47 Tg B/yr to the oceanic crust via a variety of sedimentary processes that collectively remove only a small fraction of the total annual inputs to the oceans. Thus with our current understanding of the global biogeochemistry of B, the atmospheric budget shows outputs > inputs, while the marine compartments show inputs > outputs. Despite these uncertainties, it is clear that the human perturbation of the global B cycle has more than doubled the mobilization of B from the crust and contributes significantly to the B transport in rivers. |
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THL @ luqianxue.zhang @ article |
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94 |
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Pulido-Leboeuf, P.; Pulido-Bosch, A.; Calvache, M.L.; Vallejos, Á.; Andreu, J.M. |
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Strontium, SO42-/Cl- and Mg2+/Ca2+ ratios as tracers for the evolution of seawater into coastal aquifers: the example of Castell de Ferro aquifer (SE Spain) |
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2003 |
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Comptes Rendus Geoscience |
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335 |
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14 |
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1039-1048 |
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Elsevier |
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THL @ luqianxue.zhang @ pulido2003strontium |
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71 |
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Qi, H.; Ma, C.; He, Z.; Hu, X.; Gao, L. |
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Lithium and its isotopes as tracers of groundwater salinization: A study in the southern coastal plain of Laizhou Bay, China |
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Journal Article |
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2019 |
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The Science of the Total Environment |
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Sci Total Environ |
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650 |
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Pt 1 |
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878-890 |
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Brine and seawater intrusion; Groundwater salinization; Hydrochemistry; Lithium isotope; Southern coastal plain of Laizhou Bay |
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In the southern coastal plain of Laizhou Bay, due to intensive exploitation of groundwater since the early 1970s, the shallow aquifer has been severely influenced by saltwater intrusion, which causes the extraction to shift from shallow to deeper aquifer changing the hydrogeological condition greatly. This study was conducted to investigate the groundwater salinization using hydrochemistry and H, O and Li isotope data. Dissolved Li shows a linear correlation with Cl and Br in seawater, brine and saline groundwater indicating the marine Li source, whereas the enrichment of Li in surface water, brackish and fresh groundwater is impacted by dissolution of silicate minerals. The analyses of hydrochemistry and isotopes (H, O and Li) indicate that brine originated from seawater evaporation, followed by mixing processes and some water-rock interactions; shallow saline groundwater originated from brine diluted with seawater and fresh groundwater; deep saline groundwater originated from seawater intrusion. The negative correlation of δ(7)Li and Li/Na in surface water, brackish and fresh groundwater is contrary to the general conclusion, indicating the slow weathering of silicate minerals and hydraulic interaction between surface water and shallow groundwater in this area. The analyses of hydrochemistry and isotopes (Li, H and O) can well identify the salinity sources and isotope fractionation in groundwater flow and mixing, especially groundwater with high TDS. As both mixing with saltwater and isotope fractionation can explain the combination of high δ(7)Li and low TDS in brackish groundwater, isotope fractionation may limit their use in recognizing salinity sources of groundwater with low TDS. |
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School of Environmental Studies, China University of Geosciences, Wuhan 430074, China |
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English |
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0048-9697 |
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PMID:30308862 |
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THL @ christoph.kuells @ |
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184 |
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