| Records |
| Author |
Al-Khashman, O.A. |
Title  |
Chemical characteristics of rainwater collected at a western site of Jordan |
Type |
Journal Article |
| Year |
2009 |
Publication |
Atmospheric Research |
Abbreviated Journal |
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| Volume |
91 |
Issue |
1 |
Pages |
53-61 |
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| Publisher |
Elsevier |
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Edition |
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| ISSN |
0169-8095 |
ISBN |
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Approved |
no |
| Call Number |
THL @ luqianxue.zhang @ Al-Khashman2009 |
Serial |
59 |
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| Author |
Demirak, A.; Balci, A.; Karaoğlu, H.; Tosmur, B. |
| Title |
Chemical characteristics of rain water at an urban site of south western Turkey |
Type |
Journal Article |
| Year |
2006 |
Publication |
Environmental monitoring and assessment |
Abbreviated Journal |
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| Volume |
123 |
Issue |
1-3 |
Pages |
271-283 |
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| Publisher |
Springer |
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Edition |
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| ISSN |
0167-6369 |
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Approved |
no |
| Call Number |
THL @ luqianxue.zhang @ Demirak2006 |
Serial |
56 |
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| Author |
Ladouche, B.; Luc, A.; Nathalie, D. |
| Title |
Chemical and isotopic investigation of rainwater in Southern France (1996–2002): Potential use as input signal for karst functioning investigation |
Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Hydrology |
Abbreviated Journal |
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| Volume |
367 |
Issue |
1-2 |
Pages |
150-164 |
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| Publisher |
Elsevier |
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| ISSN |
0022-1694 |
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no |
| Call Number |
THL @ luqianxue.zhang @ Ladouche2009 |
Serial |
58 |
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| Author |
Mazor, E. |
| Title |
Chemical and isotopic groundwater hydrology |
Type |
Book Whole |
| Year |
2003 |
Publication |
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Abbreviated Journal |
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| Volume |
98 |
Issue |
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Pages |
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| Publisher |
CRC press |
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THL @ luqianxue.zhang @ mazor2003chemical |
Serial |
102 |
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| Author |
Han, D.M.; Song, X.F.; Currell, M.J.; Yang, J.L.; Xiao, G.Q. |
| Title |
Chemical and isotopic constraints on evolution of groundwater salinization in the coastal plain aquifer of Laizhou Bay, China |
Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Hydrology |
Abbreviated Journal |
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| Volume |
508 |
Issue |
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Pages |
12-27 |
| Keywords |
Laizhou Bay, Coastal aquifers, Groundwater hydrochemistry, Stable isotopes, Saltwater intrusion |
| Abstract |
Summary A hydrochemical-isotopic investigation of the Laizhou Bay Quaternary aquifer in north China provides new insights into the hydrodynamic and geochemical relationships between freshwater, seawater and brine at different depths in coastal sediments. Saltwater intrusion mainly occurs due to two cones of depression caused by concentrated exploitation of fresh groundwater in the south, and brine water for salt production in the north. Groundwater is characterized by hydrochemical zonation of water types (ranging from Ca–HCO3 to Na–Cl) from south to north, controlled by migration and mixing of saline water bodies with the regional groundwater. The strong adherence of the majority of ion/Cl ratios to mixing lines between freshwater and saline water end-members (brine or seawater) indicates the importance of mixing under natural and/or anthropogenic influences. Examination of the groundwater stable isotope δ18O and δ2H values (between −9.5‰ and −3.0‰ and −75‰ and −40‰, respectively) and chloride contents (∼2 to 1000meq/L) of the groundwater indicate that the saline end-member is brine rather than seawater, and most groundwater samples plot on mixing trajectories between fresh groundwater (δ18O of between −6.0‰ and −9.0‰; Cl<5meq/L) and sampled brines (δ18O of approximately −3.0‰ and Cl>1000meq/L). Locally elevated Na/Cl ratios likely result from ion exchange in areas of long-term freshening. The brines, with radiocarbon activities of ∼30 to 60 pMC likely formed during the Holocene as a result of the sequence of transgression-regression and evaporation; while deep, fresh groundwater with depleted stable isotopic values (δ18O=−9.7‰ and δ2H=−71‰) and low radiocarbon activity (<20 pMC) was probably recharged during a cooler period in the late Pleistocene, as is common throughout northern China. An increase in the salinity and tritium concentration in some shallow groundwater sampled in the 1990s and re-sampled here indicates that intensive brine extraction has locally resulted in rapid mixing of young, fresh groundwater and saline brine. The δ18O and δ2H values of brines (∼−3.0‰ and −35‰) are much lower than that of modern seawater, which could be explained by 1) mixing of original (δ18O enriched) brine that was more saline than presently observed, with fresh groundwater recharged by precipitation and/or 2) dilution of the palaeo-seawater with continental runoff prior to and/or during brine formation. The first mechanism is supported by relatively high Br/Cl molar ratios (1.7×10−3–2.5×10−3) in brine water compared with ∼1.5×10−3 in seawater, which could indicate that the brines originally reached halite saturation and were subsequently diluted with fresher groundwater over the long-term. Decreasing 14C activities with increasing sampling depth and increasing proximity to the coastline indicate that the south coastal aquifer in Laizhou Bay is dominated by regional lateral flow, on millennial timescales. |
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0022-1694 |
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| Notes |
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Approved |
no |
| Call Number |
THL @ christoph.kuells @ Han201412 |
Serial |
174 |
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