Articles | Volume 20, issue 5
https://doi.org/10.5194/hess-20-1983-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-20-1983-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
17 May 2016
Research article |
| 17 May 2016
Identification of anthropogenic and natural inputs of sulfate into a karstic coastal groundwater system in northeast China: evidence from major ions, δ13CDIC and δ34SSO4
Dongmei Han
CORRESPONDING AUTHOR
Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
Xianfang Song
Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
Matthew J. Currell
School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, 3001 Victoria, Australia
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Dongmei Han and Matthew J. Currell
Hydrol. Earth Syst. Sci., 22, 3473–3491, https://doi.org/10.5194/hess-22-3473-2018, https://doi.org/10.5194/hess-22-3473-2018, 2018
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Based on hydrochemical and isotopic analysis, we investigated the potential hydrogeological processes responsible for the increasing groundwater salinity in the coastal aquifer of Yang–Dai River coastal plain, northern China. Seawater intrusion is the major aspect and can be caused by vertical infiltration along the riverbed at the downstream areas, and lateral inflow into fresh aquifer. Geothermal water also makes a significant contribution to increasing the groundwater salinity.
F. Liu, X. Song, L. Yang, Y. Zhang, D. Han, Y. Ma, and H. Bu
Hydrol. Earth Syst. Sci., 19, 551–565, https://doi.org/10.5194/hess-19-551-2015, https://doi.org/10.5194/hess-19-551-2015, 2015
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Due to intensive groundwater exploitation in energy base, significant changes in groundwater system will take place. This research identified the origin and geochemical evolution of groundwater in the Subei Lake basin under the influence of human activity, enhancing the knowledge of lake basins in groundwater discharge area and providing valuable groundwater information for decision makers to formulate sustainable groundwater management strategies for other similar lake basins in arid regions.
Dongmei Han and Matthew J. Currell
Hydrol. Earth Syst. Sci., 22, 3473–3491, https://doi.org/10.5194/hess-22-3473-2018, https://doi.org/10.5194/hess-22-3473-2018, 2018
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Based on hydrochemical and isotopic analysis, we investigated the potential hydrogeological processes responsible for the increasing groundwater salinity in the coastal aquifer of Yang–Dai River coastal plain, northern China. Seawater intrusion is the major aspect and can be caused by vertical infiltration along the riverbed at the downstream areas, and lateral inflow into fresh aquifer. Geothermal water also makes a significant contribution to increasing the groundwater salinity.
F. Liu, X. Song, L. Yang, Y. Zhang, D. Han, Y. Ma, and H. Bu
Hydrol. Earth Syst. Sci., 19, 551–565, https://doi.org/10.5194/hess-19-551-2015, https://doi.org/10.5194/hess-19-551-2015, 2015
Short summary
Short summary
Due to intensive groundwater exploitation in energy base, significant changes in groundwater system will take place. This research identified the origin and geochemical evolution of groundwater in the Subei Lake basin under the influence of human activity, enhancing the knowledge of lake basins in groundwater discharge area and providing valuable groundwater information for decision makers to formulate sustainable groundwater management strategies for other similar lake basins in arid regions.
Related subject area
Subject: Groundwater hydrology | Techniques and Approaches: Instruments and observation techniques
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Dynamics of hydrological and geomorphological processes in evaporite karst at the eastern Dead Sea – a multidisciplinary study
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Hydrogeological conceptual model of andesitic watersheds revealed by high-resolution heliborne geophysics
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Aude Vincent, Clémence Daigre, Ophélie Fischer, Guðfinna Aðalgeirsdóttir, Sophie Violette, Jane Hart, Snævarr Guðmundsson, and Finnur Pálsson
Hydrol. Earth Syst. Sci., 28, 3475–3494, https://doi.org/10.5194/hess-28-3475-2024, https://doi.org/10.5194/hess-28-3475-2024, 2024
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We studied groundwater near outlet glaciers of the main Icelandic ice cap. We acquired new data in the field. Two distinct groundwater compartments and their characteristics are identified. We demonstrate the glacial melt recharge impact on the groundwater dynamic. Knowing groundwater systems in a glacial context is crucial to forecast the evolution under climate change of water resources and of potential flood and landslide hazards.
Adi Biran, Tomer Sapar, Ludmila Abezgauz, and Yaniv Edery
EGUsphere, https://doi.org/10.5194/egusphere-2024-797, https://doi.org/10.5194/egusphere-2024-797, 2024
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In Earth sciences, pH-driven reactions in porous environments impact natural processes like mineral dissolution and groundwater remediation. Traditional models struggle due to pore-scale complexities. This study explores how porous structure and flow rate affect mixing and chemical reactions. Surprisingly, pH-driven reactions occur faster than predicted, emphasizing water’s unique pH behavior in porous media.
Mathias Vang, Denys Grombacher, Matthew P. Griffiths, Lichao Liu, and Jakob Juul Larsen
Hydrol. Earth Syst. Sci., 27, 3115–3124, https://doi.org/10.5194/hess-27-3115-2023, https://doi.org/10.5194/hess-27-3115-2023, 2023
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In this paper, we use a novel surface nuclear magnetic resonance (SNMR) method for rapid high-quality data acquisition. The SNMR results from more than 100 soundings in three different case studies were used to map groundwater. The soundings successfully track the water table through the three areas and are compared to boreholes and other geophysical measurements. The study highlights the use of SNMR in hydrological surveys and as a tool for regional mapping of the water table.
Flore Rembert, Marie Léger, Damien Jougnot, and Linda Luquot
Hydrol. Earth Syst. Sci., 27, 417–430, https://doi.org/10.5194/hess-27-417-2023, https://doi.org/10.5194/hess-27-417-2023, 2023
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The formation of underground cavities, called karsts, resulting from carbonate rock dissolution, is at stake in many environmental and societal issues, notably through risk management and the administration and quality of drinking water resources. Facing natural environment complexity, we propose a laboratory study combining hydro-chemical monitoring, 3D imaging, and non-invasive observation of electrical properties, showing the benefits of geoelectrical monitoring to map karst formation.
Thomas Hermans, Pascal Goderniaux, Damien Jougnot, Jan H. Fleckenstein, Philip Brunner, Frédéric Nguyen, Niklas Linde, Johan Alexander Huisman, Olivier Bour, Jorge Lopez Alvis, Richard Hoffmann, Andrea Palacios, Anne-Karin Cooke, Álvaro Pardo-Álvarez, Lara Blazevic, Behzad Pouladi, Peleg Haruzi, Alejandro Fernandez Visentini, Guilherme E. H. Nogueira, Joel Tirado-Conde, Majken C. Looms, Meruyert Kenshilikova, Philippe Davy, and Tanguy Le Borgne
Hydrol. Earth Syst. Sci., 27, 255–287, https://doi.org/10.5194/hess-27-255-2023, https://doi.org/10.5194/hess-27-255-2023, 2023
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Although invisible, groundwater plays an essential role for society as a source of drinking water or for ecosystems but is also facing important challenges in terms of contamination. Characterizing groundwater reservoirs with their spatial heterogeneity and their temporal evolution is therefore crucial for their sustainable management. In this paper, we review some important challenges and recent innovations in imaging and modeling the 4D nature of the hydrogeological systems.
Marc Ohmer, Tanja Liesch, and Andreas Wunsch
Hydrol. Earth Syst. Sci., 26, 4033–4053, https://doi.org/10.5194/hess-26-4033-2022, https://doi.org/10.5194/hess-26-4033-2022, 2022
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We present a data-driven approach to select optimal locations for groundwater monitoring wells. The applied approach can optimize the number of wells and their location for a network reduction (by ranking wells in order of their information content and reducing redundant) and extension (finding sites with great information gain) or both. It allows us to include a cost function to account for more/less suitable areas for new wells and can help to obtain maximum information content for a budget.
Odiney Alvarez-Campos, Elizabeth J. Olson, Lisa R. Welp, Marty D. Frisbee, Sebastián A. Zuñiga Medina, José Díaz Rodríguez, Wendy R. Roque Quispe, Carol I. Salazar Mamani, Midhuar R. Arenas Carrión, Juan Manuel Jara, Alexander Ccanccapa-Cartagena, and Chad T. Jafvert
Hydrol. Earth Syst. Sci., 26, 483–503, https://doi.org/10.5194/hess-26-483-2022, https://doi.org/10.5194/hess-26-483-2022, 2022
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We present results of a hydrologic study of groundwater recharge near the city of Arequipa, Peru. There are a number of springs below a high-elevation salar that show some chemical evidence of connectivity to the salar basin, possibly facilitated by faults in region. These results suggest that this salar basin is not a strictly terminal lake but that some interbasin groundwater flow exists. In addition, a high-elevation forest ecosystem seems important for groundwater recharge as well.
Kun Jia, Cara C. M. Manning, Ashlee Jollymore, and Roger D. Beckie
Hydrol. Earth Syst. Sci., 25, 4983–4993, https://doi.org/10.5194/hess-25-4983-2021, https://doi.org/10.5194/hess-25-4983-2021, 2021
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The effect of soluble reduced iron, Fe(II), on fluorescence data (excitation–emission matrix spectra parsed using parallel factor analysis) is difficult to quantitatively assign. We added varying quantities of Fe(II) into groundwater from an anaerobic aquifer. We showed that the overall fluorescence intensity decreased nonlinearly as Fe(II) increased from 1 to 306 mg L-1 but that the parallel factor analysis component distribution was relatively insensitive to Fe(II) concentration.
Ashley N. Martin, Karina Meredith, Andy Baker, Marc D. Norman, and Eliza Bryan
Hydrol. Earth Syst. Sci., 25, 3837–3853, https://doi.org/10.5194/hess-25-3837-2021, https://doi.org/10.5194/hess-25-3837-2021, 2021
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We measured the silicon isotopic composition of groundwater from Rottnest Island, Western Australia, to investigate water–rock interactions in a coastal aquifer. Silicon isotopic ratios varied spatially across the island and were related to secondary mineral formation and vertical mixing within the aquifer. We find that silicate dissolution occurs in the freshwater–seawater transition zone, supporting the recent recognition of submarine groundwater discharge in the oceanic silicon isotope cycle.
Djamil Al-Halbouni, Robert A. Watson, Eoghan P. Holohan, Rena Meyer, Ulrich Polom, Fernando M. Dos Santos, Xavier Comas, Hussam Alrshdan, Charlotte M. Krawczyk, and Torsten Dahm
Hydrol. Earth Syst. Sci., 25, 3351–3395, https://doi.org/10.5194/hess-25-3351-2021, https://doi.org/10.5194/hess-25-3351-2021, 2021
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The rapid decline of the Dead Sea level since the 1960s has provoked a dynamic reaction from the coastal groundwater system, with physical and chemical erosion creating subsurface voids and conduits. By combining remote sensing, geophysical methods, and numerical modelling at the Dead Sea’s eastern shore, we link groundwater flow patterns to the formation of surface stream channels, sinkholes and uvalas. Better understanding of this karst system will improve regional hazard assessment.
Shovon Barua, Ian Cartwright, P. Evan Dresel, and Edoardo Daly
Hydrol. Earth Syst. Sci., 25, 89–104, https://doi.org/10.5194/hess-25-89-2021, https://doi.org/10.5194/hess-25-89-2021, 2021
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We evaluate groundwater recharge rates in a semi-arid area that has undergone land-use changes. The widespread presence of old saline groundwater indicates that pre-land-clearing recharge rates were low and present-day recharge rates are still modest. The fluctuations of the water table and tritium activities reflect present-day recharge rates; however, the water table fluctuation estimates are unrealistically high, and this technique may not be suited for estimating recharge in semi-arid areas.
Brady A. Flinchum, Eddie Banks, Michael Hatch, Okke Batelaan, Luk J. M. Peeters, and Sylvain Pasquet
Hydrol. Earth Syst. Sci., 24, 4353–4368, https://doi.org/10.5194/hess-24-4353-2020, https://doi.org/10.5194/hess-24-4353-2020, 2020
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Identifying and quantifying recharge processes linked to ephemeral surface water features is challenging due to their episodic nature. We use a unique combination of well-established near-surface geophysical methods to provide evidence of a surface and groundwater connection in a flat, semi-arid region north of Adelaide, Australia. We show that a combined geophysical approach can provide a unique perspective that can help shape the hydrogeological conceptualization.
Karina T. Meredith, Andy Baker, Martin S. Andersen, Denis M. O'Carroll, Helen Rutlidge, Liza K. McDonough, Phetdala Oudone, Eliza Bryan, and Nur Syahiza Zainuddin
Hydrol. Earth Syst. Sci., 24, 2167–2178, https://doi.org/10.5194/hess-24-2167-2020, https://doi.org/10.5194/hess-24-2167-2020, 2020
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Dissolved organic carbon within groundwater and processes controlling it remain largely unknown. The average groundwater concentration at this coastal site was 5 times higher than the global median, doubling with depth, but with no change in chromatographic character. The lack of oxygen limited the rate of organic matter processing, leading to enhanced preservation. Changes in coastal hydrology could lead to the flux of unreacted organic carbon.
Andrea Palacios, Juan José Ledo, Niklas Linde, Linda Luquot, Fabian Bellmunt, Albert Folch, Alex Marcuello, Pilar Queralt, Philippe A. Pezard, Laura Martínez, Laura del Val, David Bosch, and Jesús Carrera
Hydrol. Earth Syst. Sci., 24, 2121–2139, https://doi.org/10.5194/hess-24-2121-2020, https://doi.org/10.5194/hess-24-2121-2020, 2020
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Coastal areas are highly populated and seawater intrusion endangers the already scarce freshwater resources. We use, for the first time, a geophysical experiment called cross-hole electrical resistivity tomography to monitor seawater intrusion dynamics. The technique relies on readings of rock and water electrical conductivity to detect salt in the aquifer. Two years of experiment allowed us to reveal variations in aquifer salinity due to natural seasonality, heavy-rain events and droughts.
Nathan A. Wales, Jesus D. Gomez-Velez, Brent D. Newman, Cathy J. Wilson, Baptiste Dafflon, Timothy J. Kneafsey, Florian Soom, and Stan D. Wullschleger
Hydrol. Earth Syst. Sci., 24, 1109–1129, https://doi.org/10.5194/hess-24-1109-2020, https://doi.org/10.5194/hess-24-1109-2020, 2020
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Rapid warming in the Arctic is causing increased permafrost temperatures and ground ice degradation. To study the effects of ice degradation on water distribution, tracer was applied to two end members of ice-wedge polygons – a ubiquitous landform in the Arctic. End member type was found to significantly affect water distribution as lower flux was observed with ice-wedge degradation. Results suggest ice degradation can influence partitioning of sequestered carbon as carbon dioxide or methane.
Brighid É. Ó Dochartaigh, Alan M. MacDonald, Andrew R. Black, Jez Everest, Paul Wilson, W. George Darling, Lee Jones, and Mike Raines
Hydrol. Earth Syst. Sci., 23, 4527–4539, https://doi.org/10.5194/hess-23-4527-2019, https://doi.org/10.5194/hess-23-4527-2019, 2019
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We provide evidence of high groundwater storage and flow in catchments with active glaciers. Groundwater is found within gravels at the front of glaciers and replenished by both ice melt and precipitation. We studied a glacier in Iceland for 3 years, characterising the aquifer properties and measuring groundwater, river flow and precipitation. The results are important for accurately measuring meltwater and show that groundwater can provide strategic water supplies in de-glaciating catchments.
Katie Coluccio and Leanne Kaye Morgan
Hydrol. Earth Syst. Sci., 23, 4397–4417, https://doi.org/10.5194/hess-23-4397-2019, https://doi.org/10.5194/hess-23-4397-2019, 2019
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Braided rivers are uncommon internationally but are important freshwater resources. However, there is limited understanding of how characteristics unique to braided rivers affect groundwater–surface water flow paths. This article reviews prior studies that have investigated groundwater–surface water interactions in these rivers and their associated aquifers to provide guidance on methodologies most suitable for future work in braided rivers and highlight gaps in current knowledge.
Gabriel C. Rau, Vincent E. A. Post, Margaret Shanafield, Torsten Krekeler, Eddie W. Banks, and Philipp Blum
Hydrol. Earth Syst. Sci., 23, 3603–3629, https://doi.org/10.5194/hess-23-3603-2019, https://doi.org/10.5194/hess-23-3603-2019, 2019
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The flow of water is often inferred from water levels and gradients whose measurements are considered trivial despite the many steps and complexity of the instruments involved. We systematically review the four measurement steps required and summarise the systematic errors. To determine the accuracy with which flow can be resolved, we quantify and propagate the random errors. Our results illustrate the limitations of current practice and provide concise recommendations to improve data quality.
Eva Sebok and Sascha Müller
Hydrol. Earth Syst. Sci., 23, 3305–3317, https://doi.org/10.5194/hess-23-3305-2019, https://doi.org/10.5194/hess-23-3305-2019, 2019
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Exchange fluxes between groundwater and surface waters can be quantified using temperature measurements from the upper sediment layers of streams and lakes assuming the thermal properties of sediments. This study quantified the natural variabiilty in sediment thermal conductivity in the vertical direction at the bed of surface waters and showed that fluxes can change by up to +/-75 % depending on using standard literature values or in situ measurements for sediment thermal conductivity.
Benoit Vittecoq, Pierre-Alexandre Reninger, Frédéric Lacquement, Guillaume Martelet, and Sophie Violette
Hydrol. Earth Syst. Sci., 23, 2321–2338, https://doi.org/10.5194/hess-23-2321-2019, https://doi.org/10.5194/hess-23-2321-2019, 2019
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Water resource management on volcanic islands is challenging and faces several issues. Taking advantage of new heliborne geophysical technology, correlated with borehole and spring data, we develop a watershed-scale conceptual model and demonstrate that permeability increases with age for the studied formations. Moreover, complex geological structures lead to preferential flow circulations and to discrepancy between topographical and hydrogeological watersheds, influencing river flow rates.
Carme Barba, Albert Folch, Núria Gaju, Xavier Sanchez-Vila, Marc Carrasquilla, Alba Grau-Martínez, and Maira Martínez-Alonso
Hydrol. Earth Syst. Sci., 23, 139–154, https://doi.org/10.5194/hess-23-139-2019, https://doi.org/10.5194/hess-23-139-2019, 2019
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Managed aquifer recharge allows increasing water resources and can be used to improve water quality. We assess the degradative capabilities of infiltrating pollutants by mapping the composition of microbial communities linked to periods of infiltration/drought. From samples of soil, surface and groundwater, we found some microbial species involved in the nitrogen and carbon cycles. Furthermore, we found that, during infiltration, microbial abundance rises, increasing degradative capabilities.
Katarina David, Wendy Timms, Catherine E. Hughes, Jagoda Crawford, and Dayna McGeeney
Hydrol. Earth Syst. Sci., 22, 6023–6041, https://doi.org/10.5194/hess-22-6023-2018, https://doi.org/10.5194/hess-22-6023-2018, 2018
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We investigated the wetland system classified as a threatened ecological community and found that organic-rich soil close to surfaces retains significant moisture necessary for ecosystems. At the base of the swamp an identified sand layer allows relatively rapid drainage and lateral groundwater interaction. Evaporation estimated from stable water isotopes from sediments indicated that groundwater contribution to the swamp is significant in dry periods, supporting ecosystems when water is scarce.
Lucheng Zhan, Jiansheng Chen, Ling Li, and David A. Barry
Hydrol. Earth Syst. Sci., 22, 4449–4454, https://doi.org/10.5194/hess-22-4449-2018, https://doi.org/10.5194/hess-22-4449-2018, 2018
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Using the arithmetic averages of precipitation isotope values, Wu et al. (2017) concluded that the Badain Jaran Desert (BJD) groundwater is recharged by modern local meteoric water. However, based on weighted mean precipitation isotope values, our further analysis shows that modern precipitation on the Qilian Mountains is more likely to be the main source of the groundwater and lake water in the BJD, as found. We believe this comment provides an important improvement for their study.
Dongmei Han and Matthew J. Currell
Hydrol. Earth Syst. Sci., 22, 3473–3491, https://doi.org/10.5194/hess-22-3473-2018, https://doi.org/10.5194/hess-22-3473-2018, 2018
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Based on hydrochemical and isotopic analysis, we investigated the potential hydrogeological processes responsible for the increasing groundwater salinity in the coastal aquifer of Yang–Dai River coastal plain, northern China. Seawater intrusion is the major aspect and can be caused by vertical infiltration along the riverbed at the downstream areas, and lateral inflow into fresh aquifer. Geothermal water also makes a significant contribution to increasing the groundwater salinity.
Stephan Costabel, Christoph Weidner, Mike Müller-Petke, and Georg Houben
Hydrol. Earth Syst. Sci., 22, 1713–1729, https://doi.org/10.5194/hess-22-1713-2018, https://doi.org/10.5194/hess-22-1713-2018, 2018
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Laboratory experiments using water-filled sand and gravel samples with significant contents of iron oxide coatings were performed to identify the relationship between effective hydraulic radius and nuclear magnetic resonance (NMR) response. Our interpretation approach for the NMR data leads to reliable estimates of hydraulic conductivity without calibration, but is limited to coarse material for physical reasons. An NMR-based observation system for iron clogging in boreholes is planned.
Etienne Bresciani, Roger H. Cranswick, Eddie W. Banks, Jordi Batlle-Aguilar, Peter G. Cook, and Okke Batelaan
Hydrol. Earth Syst. Sci., 22, 1629–1648, https://doi.org/10.5194/hess-22-1629-2018, https://doi.org/10.5194/hess-22-1629-2018, 2018
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This article tackles the problem of finding the origin of groundwater in basin aquifers adjacent to mountains. In particular, we aim to determine whether the recharge occurs predominantly through stream infiltration along the mountain front or through subsurface flow from the mountain. To this end, we discuss the use of routinely measured variables: hydraulic head, chloride and electrical conductivity. A case study from Australia demonstrates the approach.
Bernd Kohlhepp, Robert Lehmann, Paul Seeber, Kirsten Küsel, Susan E. Trumbore, and Kai U. Totsche
Hydrol. Earth Syst. Sci., 21, 6091–6116, https://doi.org/10.5194/hess-21-6091-2017, https://doi.org/10.5194/hess-21-6091-2017, 2017
Charlotte P. Iverach, Dioni I. Cendón, Karina T. Meredith, Klaus M. Wilcken, Stuart I. Hankin, Martin S. Andersen, and Bryce F. J. Kelly
Hydrol. Earth Syst. Sci., 21, 5953–5969, https://doi.org/10.5194/hess-21-5953-2017, https://doi.org/10.5194/hess-21-5953-2017, 2017
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This study uses a multi-tracer geochemical approach to determine the extent of artesian groundwater discharge into an economically important alluvial aquifer. We compare estimates for artesian discharge into the alluvial aquifer derived from water balance modelling and geochemical data to show that there is considerable divergence in the results. The implications of this work involve highlighting that geochemical data should be used as a critical component of water budget assessments.
Virgil Drăguşin, Sorin Balan, Dominique Blamart, Ferenc Lázár Forray, Constantin Marin, Ionuţ Mirea, Viorica Nagavciuc, Iancu Orăşeanu, Aurel Perşoiu, Laura Tîrlă, Alin Tudorache, and Marius Vlaicu
Hydrol. Earth Syst. Sci., 21, 5357–5373, https://doi.org/10.5194/hess-21-5357-2017, https://doi.org/10.5194/hess-21-5357-2017, 2017
Monique Beyer, Uwe Morgenstern, Rob van der Raaij, and Heather Martindale
Hydrol. Earth Syst. Sci., 21, 4213–4231, https://doi.org/10.5194/hess-21-4213-2017, https://doi.org/10.5194/hess-21-4213-2017, 2017
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The determination of groundwater age can aid characterization of aquifers, providing information on groundwater mixing, flow, volume, and recharge rates. Here we assess a recently discovered groundwater age tracer, Halon-1301. Its performance as an age tracer is assessed against six other well-established, widely used age tracers in 302 groundwater samples. We show Halon-1301 reliably inferred age, thus potentially becoming a useful groundwater age tracer where other tracers are compromised.
Colby M. Steelman, Celia S. Kennedy, Donovan C. Capes, and Beth L. Parker
Hydrol. Earth Syst. Sci., 21, 3105–3123, https://doi.org/10.5194/hess-21-3105-2017, https://doi.org/10.5194/hess-21-3105-2017, 2017
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The Eramosa River flows along a fractured sedimentary bedrock aquifer with large subsurface channel features. This study examines the potential for groundwater–surface water exchange beneath the fractured bedrock riverbed and the impacts of seasonal and intraseasonal flow system transience on the geoelectrical properties of the rock. Our results will have implications to the conceptual understanding of groundwater–surface water interaction within fractured bedrock river environments.
Linsong Wang, Chao Chen, Jinsong Du, and Tongqing Wang
Hydrol. Earth Syst. Sci., 21, 2905–2922, https://doi.org/10.5194/hess-21-2905-2017, https://doi.org/10.5194/hess-21-2905-2017, 2017
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The North China Plain (NCP), as the interest region in this study, is one of the most uniformly and extensively altered areas due to overexploitation of groundwater by humans. Here, we use GRACE and GPS to study the seasonal and long-term mass change and its resulting vertical displacement. We also removed the vertical rates, which are induced by terrestrial water storage (TWS) from GPS-derived data to obtain the corrected vertical velocities caused by tectonic movement and human activities.
Klaus Haaken, Gian Piero Deidda, Giorgio Cassiani, Rita Deiana, Mario Putti, Claudio Paniconi, Carlotta Scudeler, and Andreas Kemna
Hydrol. Earth Syst. Sci., 21, 1439–1454, https://doi.org/10.5194/hess-21-1439-2017, https://doi.org/10.5194/hess-21-1439-2017, 2017
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The paper presents a general methodology that will help understand how freshwater and saltwater may interact in natural porous media, with a particular view at practical applications such as the storage of freshwater underground in critical areas, e.g., semi-arid zones around the Mediterranean sea. The methodology is applied to a case study in Sardinia and shows how a mix of advanced monitoring and mathematical modeling tremendously advance our understanding of these systems.
Donald O. Rosenberry, Martin A. Briggs, Emily B. Voytek, and John W. Lane
Hydrol. Earth Syst. Sci., 20, 4323–4339, https://doi.org/10.5194/hess-20-4323-2016, https://doi.org/10.5194/hess-20-4323-2016, 2016
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The remaining populations of the endangered dwarf wedgemussel (DWM) (Alasmidonta heterodon) in the upper Delaware River, northeastern USA, were thought to be located in areas of substantial groundwater discharge to the river. Physical, thermal, and geophysical methods applied at several spatial scales indicate that DWM are located within or directly downstream of areas of substantial groundwater discharge to the river. DWM may depend on groundwater discharge for their survival.
T. McCormack, O. Naughton, P. M. Johnston, and L. W. Gill
Hydrol. Earth Syst. Sci., 20, 2119–2133, https://doi.org/10.5194/hess-20-2119-2016, https://doi.org/10.5194/hess-20-2119-2016, 2016
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In this study, the influence of surface water–groundwater interaction on the nutrient flux in a lowland karst catchment in western Ireland was investigated with the aid of alkalinity sampling and a hydrological model. Results indicated that denitrification within a number of ephemeral lakes is the main process reducing nitrogen concentrations within the turloughs, whereas phosphorus loss is thought to occur mostly via sedimentation and subsequent soil deposition.
W. A. Timms, R. Crane, D. J. Anderson, S. Bouzalakos, M. Whelan, D. McGeeney, P. F. Rahman, and R. I. Acworth
Hydrol. Earth Syst. Sci., 20, 39–54, https://doi.org/10.5194/hess-20-39-2016, https://doi.org/10.5194/hess-20-39-2016, 2016
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Low permeability sediments and rock can leak slowly, yet can act as important barriers to flow for resource development and for waste sequestration. Relatively rapid and reliable hydraulic tests of "tight" geological materials are possible by accelerating gravity. Results from geotechnical centrifuge testing of drill core and in situ pore pressure monitoring were compared with a regional flow model, and considered in the context of inherent geological variability at site and formation scale.
M. J. Hendry, E. Schmeling, L. I. Wassenaar, S. L. Barbour, and D. Pratt
Hydrol. Earth Syst. Sci., 19, 4427–4440, https://doi.org/10.5194/hess-19-4427-2015, https://doi.org/10.5194/hess-19-4427-2015, 2015
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Improvements and limitations to the measurement δ2H and δ18O of pore waters in geologic core samples using laser spectrometry are presented. These included the use of a δ2H spike to assess the extent of drill fluid contamination and the effect of storage time and type of sample bag on pore water values.
M. Beyer, R. van der Raaij, U. Morgenstern, and B. Jackson
Hydrol. Earth Syst. Sci., 19, 2775–2789, https://doi.org/10.5194/hess-19-2775-2015, https://doi.org/10.5194/hess-19-2775-2015, 2015
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We assess the potential of Halon-1301 as a new groundwater age tracer, which had not been assessed in detail. We determine Halon-1301 and infer age in 17 New Zealand groundwater samples and various modern waters. Halon-1301 reliably inferred age in 71% of the sites within 1 SD of the ages inferred from tritium and SF6. The remaining (anoxic) waters show reduced concentrations of Halon-1301 along with even further reduced concentrations of CFCs. The reason(s) for this need to be further assessed.
A. C. King, M. Raiber, D. I. Cendón, M. E. Cox, and S. E. Hollins
Hydrol. Earth Syst. Sci., 19, 2315–2335, https://doi.org/10.5194/hess-19-2315-2015, https://doi.org/10.5194/hess-19-2315-2015, 2015
M. Huebsch, F. Grimmeisen, M. Zemann, O. Fenton, K. G. Richards, P. Jordan, A. Sawarieh, P. Blum, and N. Goldscheider
Hydrol. Earth Syst. Sci., 19, 1589–1598, https://doi.org/10.5194/hess-19-1589-2015, https://doi.org/10.5194/hess-19-1589-2015, 2015
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Two different in situ spectrophotometers, which were used in the field to determine highly time resolved nitrate-nitrogen (NO3-N) concentrations at two distinct spring discharge sites, are compared: a double and a multiple wavelength spectrophotometer. The objective of the study was to review the hardware options, determine ease of calibration, accuracy, influence of additional substances and to assess positive and negative aspects of the two sensors as well as troubleshooting and trade-offs.
A. Armandine Les Landes, L. Aquilina, P. Davy, V. Vergnaud-Ayraud, and C. Le Carlier
Hydrol. Earth Syst. Sci., 19, 1413–1426, https://doi.org/10.5194/hess-19-1413-2015, https://doi.org/10.5194/hess-19-1413-2015, 2015
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The crystalline rock aquifers of the Armorican Massif present clear evidence of a marine origin of the saline component in the fluids on the regional scale. High chloride concentrations are attributed to three past marine transgressions. The relationship between chloride concentration and transgression age provides constraints for the timescales of fluid circulation. This time frame is useful information for developing conceptual models of the paleo-functioning of Armorican aquifers.
J. F. Dean, J. A. Webb, G. E. Jacobsen, R. Chisari, and P. E. Dresel
Hydrol. Earth Syst. Sci., 19, 1107–1123, https://doi.org/10.5194/hess-19-1107-2015, https://doi.org/10.5194/hess-19-1107-2015, 2015
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This paper examines modern and historical groundwater recharge rates to determine the impacts of reforestation in south-eastern Australia. This study shows that over both the long and short term, groundwater recharge in the study area occurs predominantly in the lower catchment areas. The results of this study show that spatial variations in recharge are important considerations for locating tree plantations, especially when looking to conserve water for downstream users in low rainfall regions.
F. Liu, X. Song, L. Yang, Y. Zhang, D. Han, Y. Ma, and H. Bu
Hydrol. Earth Syst. Sci., 19, 551–565, https://doi.org/10.5194/hess-19-551-2015, https://doi.org/10.5194/hess-19-551-2015, 2015
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Due to intensive groundwater exploitation in energy base, significant changes in groundwater system will take place. This research identified the origin and geochemical evolution of groundwater in the Subei Lake basin under the influence of human activity, enhancing the knowledge of lake basins in groundwater discharge area and providing valuable groundwater information for decision makers to formulate sustainable groundwater management strategies for other similar lake basins in arid regions.
Z. Zhang, H. Hu, F. Tian, X. Yao, and M. Sivapalan
Hydrol. Earth Syst. Sci., 18, 3951–3967, https://doi.org/10.5194/hess-18-3951-2014, https://doi.org/10.5194/hess-18-3951-2014, 2014
C. E. Bon, A. S. Reeve, L. Slater, and X. Comas
Hydrol. Earth Syst. Sci., 18, 953–965, https://doi.org/10.5194/hess-18-953-2014, https://doi.org/10.5194/hess-18-953-2014, 2014
U. Lauber, W. Ufrecht, and N. Goldscheider
Hydrol. Earth Syst. Sci., 18, 435–445, https://doi.org/10.5194/hess-18-435-2014, https://doi.org/10.5194/hess-18-435-2014, 2014
B. Rogiers, K. Beerten, T. Smeekens, D. Mallants, M. Gedeon, M. Huysmans, O. Batelaan, and A. Dassargues
Hydrol. Earth Syst. Sci., 17, 5155–5166, https://doi.org/10.5194/hess-17-5155-2013, https://doi.org/10.5194/hess-17-5155-2013, 2013
N. P. Unland, I. Cartwright, M. S. Andersen, G. C. Rau, J. Reed, B. S. Gilfedder, A. P. Atkinson, and H. Hofmann
Hydrol. Earth Syst. Sci., 17, 3437–3453, https://doi.org/10.5194/hess-17-3437-2013, https://doi.org/10.5194/hess-17-3437-2013, 2013
G. Mongelli, S. Monni, G. Oggiano, M. Paternoster, and R. Sinisi
Hydrol. Earth Syst. Sci., 17, 2917–2928, https://doi.org/10.5194/hess-17-2917-2013, https://doi.org/10.5194/hess-17-2917-2013, 2013
X. Chen, W. Dong, G. Ou, Z. Wang, and C. Liu
Hydrol. Earth Syst. Sci., 17, 2569–2579, https://doi.org/10.5194/hess-17-2569-2013, https://doi.org/10.5194/hess-17-2569-2013, 2013
Cited articles
Appelo, C. A. J.: Cation and proton exchange, pH variations and carbonate recactions in a freshening aquifer, Water Resour. Res., 30, 2793–2805, 1994.
Appelo, C. A. J. and Postma, D.: Geochemistry, groundwater and pollution, 2nd Edn., A. A. Balkema Publishers, Leiden, the Netherlands, 241–246, 2005.
Aunay, B., Dörfliger, N., Duvail, C., Grelot, F., Le Strat, P., Montginoul, M., and Rinaudo, J. D.: Hydro-socio-economic implications for water management strategies: the case of Roussillon coastal aquifer, in: International Symposium – DARCY 2006, Aquifer Systems Management, May 2006, Dijon, France, p. 9, 2006.
Back, W., Hanshaw, B. B., Pyle, T. E., Plummer, L. N., and Weidie, A. E.: Geochemical significance of groundwater discharge and carbonate solution of the formation of Caleta Xel Ha, Quintana Roo, Mexico, Water Resour. Res., 15, 1521–1535, 1979.
Barlow, P. M. and Reichard, E. G.: Saltwater intrusion in coastal regions of North America, Hydrogeol. J., 18, 247–260, 2010.
Cardenal, J., Benavente, J., and Cruz-Sanjulián, J. J.: Chemical evolution of groundwater in Triassic gypsum-bearing carbonate aquifers (Las Alpujarras, southern Spain), J. Hydrol., 161, 3–30, 1994.
Cartwright, I., Weaver, T. R., Fulton, S., Nichol, C., Reid, M., and Cheng, X.: Hydrogeochemical and isotopic constraints on the origins of dryland salinity, Murray Basin, Victoria, Australia, Appl. Geochem., 19, 1233–1254, 2004.
CGS – China Geology Survey: Assurance report of water supply in Dalian City, Geological survey institute of Liaoning Province, Dalian, China, 38–44, 2007.
Clark, I. and Fritz, P.: Environmental Isotopes in Hydrogeology, Lewis Publishers, Boca Raton, 138–140, 1997.
Cravotta, C. A.: Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin, Pennsylvania, US Geol. Surv. Water Supply Paper, US Geological Survey, Denver, 20–38, 1995.
Currell, M. J., Cartwright, I., Bradley, D. C., and Han, D. M.: Recharge history and controls on groundwater quality in the Yuncheng Basin, north China, J. Hydrol., 385, 216–229, 2010.
Currell, M. J., Han, D. M., Chen, Z. Y., and Cartwright, I.: Sustainability of groundwater usage in northern China: dependence on palaeowaters and effects on water quality, quantity and ecosystem health, Hydrol. Process., 26, 4050–4066, 2012.
Daniele, L., Vallejos, Á., Corbella, M., Luis Molina, L., and Pulido-Bosch, A.: Hydrogeochemistry and geochemical simulations to assess water-rock interactions in complex carbonate aquifers: The case of Aguadulce (SE Spain), Appl. Geochem., 29, 43–54, 2013.
Deines, P. and Langmuir, D.: Stable carbon isotope ratios and the existence of a gas phase in the evolution of carbonate ground waters, Geochim. Cosmochim. Acta, 38, 1147–1164, 1974.
de Louw, P. G. B., Eeman, S., Oude Essink, G. H. P., Vermue, E., and Post, V. E. A.: Rainwater lens dynamics and mixing between infiltrating rainwater and upward saline groundwater seepage beneath a tile-drained agricultural field, J. Hydrol., 501, 133–145, 2013.
de Montety, V., Radakovitch, O., Vallet-Coulomb, C., Blavoux, B., Hermitte, D., and Valles, V.: Origin of groundwater salinity and hydrogeochemical processes in a confined coastal aquifer: Case of the Rhône delta (Southern France), Appl. Geochem., 23, 2337–2349, 2008.
Drever, J. I.: The Geochemistry of Natural Waters: Surface and Groundwater Environments, Prentice-Hall, New Jersey, USA, 436 pp., 1997.
Edmunds, W. M.: Bromine geochemistry of British groundwaters, Mineral. Mag., 60, 275–284, 1996.
Edmunds, W. M., Cook, J. M., Darling, W. G., Kinniburgh, D. G., and Miles, D. L.: Baseline geochemical conditions in the chalk aquifer, Berkshire, UK: a basis for groundwater quality management, Appl. Geochem., 2, 251–274, 1987.
Fan, J. J.: Seawater intrusion and calculation of groundwater exploitation in the karst area of the west JinXian, Dalian, Hydrogeol. Eng. Geol., 1, 3–6, 1984.
Freeze, R. A. and Cherry, J. A.: Groundwater, Prentice Hall, Englewood Cliffs, NJ, 604 pp., 1979.
Ghassemi, F., Jakeman, A. J., and Nix, H. A.: Salinisation of land and water resources: human causes, extent, management and case studies, University of New South Wales Press, Sydney, 526 pp., 1995.
Ghiglieri, G., Carletti, A., and Pittalis, D.: Analysis of salinization processes in the coastal carbonate aquifer of Porto Torres (NW Sardinia, Italy), J. Hydrol., 432–433, 43–51, 2012.
Giménez-Forcada, E.: Dynamic of sea water interface using hydrochemical facies evolution diagram, Ground Water, 48, 212–216, 2010.
Guo, Y. H., Shen, Z. L., and Zhong, Z. X.: Downward movement of shallow saline groundwater and its impact on deep-lying groundwater system, Hydrogeol. Eng. Geol., 2, 8–12, 1995.
Halas, S. and Szaran, J.: Low-temperature thermal decomposition of sulfates to SO2 for on-line 34S/32S analysis, Analyt. Chem., 71, 3254–3257, 1999.
Han, D. M., Kohfahl, C., Song, X. F., Xiao, G. Q., and Yang, J. L.: Geochemical and isotopic evidence for palaeo-seawater intrusion into the south coast aquifer of Laizhou Bay, China, Appl. Geochem., 26, 863–883, 2011.
Han, D. M., Post, V. E. A., and Song, X. F.: Groundwater salinization processes and reversibility of seawater intrusion in coastal carbonate aquifers, J. Hydrol., 531, 1067–1080, 2015.
Hong, Y. T., Zhang, H. B., Zhu, Y. X., Pu, H. C., Jiang, H. B., and Liu, D. P.: Characteristics of sulfur isotope composition of precipitation in China, Adv. Nat. Sci., 6, 741–745, 1994.
Hosono, T., Nakano, T., Iget, A., Tayasu, I., Tanaka, T., and Yachi, S.: Impact of fertilizer on a small watershed of Lake Biwa: Use of sulfur and strontium isotopes in environmental diagnosis, Sci. Total Environ., 384, 342–354, 2007.
Hu, T.: Analysis on economic benefit of Dalian suburban farming, Chin. Agr. Sci. Bull., 26, 393–397, 2010.
Hunkeler, D. and Mudry, J.: Hydrochemical methods, in: Methods in karst hydrogeology: IAH international contributions to hydrogeology, edited by: Goldscheider, N. and Drew, D., British Geological Survey, Wallingford, UK, Taylor & Francis Group e-Library, London, UK, 99 pp., 2007.
Jin, Y. J. and Wu, Q.: The application of the electrical logging of well fluid in determining the vertical heterogeneity of sea water intrusion. J. Heibei College Geol., 13, 69–73, 1990.
Jones, B., Pleydell, S. M., Ng, K.-C., and Longstaffe, F. J.: Formation of poikilotopic calcite–dolomite fabrics in the Oligocene–Miocene Bluff formation of Grand Cayman, British West Indies, Bull. Can. Petrol. Geol., 37, 255–265, 1989.
Kaown, D., Koh, D.-C., Mayer, B., and Lee, K.-K.: Identification of nitrate and sulphate sources in groundwater using dual stable isotope approaches for an agricultural area with different land use (Chuncheon, mid-eastern Korea), Agr. Ecosyst. Environ., 132, 223–231, 2009.
Kim, H., Kaown, D., Mayer, B., Lee, J., Hyun, Y., and Lee, K.: Identifying the sources of nitrate contamination of groundwater in an agricultural area (Haean basin, Korea) using isotope and microbial community analyses, Sci. Total Environ., 533, 566–575, 2015.
Kloppmann, W., Dever, L., and Edmunds, W. M.: Residence time of chalk groundwaters in the Paris Basin and the North German Basin: a geochemical approach, Appl. Geochem., 13, 593–606, 1998.
Kumar, M., Rao, M. S., Deka, J. P., Ramanathan, A. L., and Kumar, B.: Integrated hydrogeochemical, isotopic and geomorphological depiction of the groundwater salinization in the aquifer system of Delhi, India, J. Asian Earth Sci., 111, 936–947, 2015.
Langmuir, D.: The geochemsitry of some carbonate ground waters in central Pennsylvania, Geochim. Cosmochim. Acta, 35, 1023–1045, 1971.
Li, X. D., Harue, M., Kusakabe, M., Yanagisawa, F., and Zeng, H. A.: Degradation of groundwater quality due to anthropogenic sulfur and nitrogen contamination in the Sichuan Basin, China, Geochem. J., 40, 309–332, 2006.
López-Chicano, M., Bouamama, M., Vallejos, A., and Pulido-Bosch, A.: Factors which determine the hydrogeochemical behavior of karst springs. A case study from the Betic Cordilleras, Spain, Appl. Geochem., 16, 1179–1192, 2001.
Lü, G., Zhao, L. B., Sun, X. Z., and Tan, D. F.: Periodic summary report on investigating the environmental hydrogeology in Dalian area, The Second Institute of hydrogeology and engineering geology, Liaoning Bureau of Geology, Dalian, China, 48–66, 1981.
McCaffrey, M. A., Lazar, B., and Holland, H. D.: The evaporation path of seawater and the coprecipitation of Br− and K+ with halite, J. Sediment. Petrol., 57, 928–937, 1987.
Moral, F., Cruz-Sanjulian, J. J., and Olias, M.: Geochemical evolution of groundwater in the carbonate aquifers of Sierra de Segura (Betic Cordillera, southern Spain), J. Hydrol., 360, 281–296, 2008.
Myshakin, E., Siriwardane, H., Hulcher, C., Lindner, E., Sams, N., King, S., and McKoy, M.: Numerical simulations of vertical growth of hydraulic fractures and brine migration in geological formations above the Marcellus shale, J. Nat. Gas Sci. Eng., 27, 531–544, 2015.
Najib, S., Fadili, A., Mehdi, K., Riss, J., Makan, A., and Guessir, H.: Salinization process and coastal groundwater quality in Chaouia, Morocco, J. Afr. Earth Sci., 115, 17–31, 2016.
Otero, N., Canals, A., and Soler, A.: Using dual-isotope data to trace the origin and processes of dissolved sulphate: a case study in Calders stream (Llobregat basin, Spain), Aquat. Geochem., 13, 109–126, 2007.
Parkhurst, D. L. and Appelo, C. A. J.: User's Guide to PHREEQC-A Computer Program for Speciation, Reaction-Path, 1D-Transport, and Inverse Geochemical Calculation, US Geol. Surv. Water-Resour. Invest. Rep., US Geol. Surv., Denver, Colorado, 99–4259, 1999.
Plummer, L. N. and Sprinkle, C. L.: Radiocarbon dating of dissolved inorganic carbon in groundwater from confined parts of the Upper Floridan Aquifer, Florida, USA, Hydrogeol. J., 9, 127–150, 2001.
Plummer, L. N., Busby, J. F., Lee, R. W., and Hanshaw, B. B.: Geochemical modeling in the Madison aquifer in parts of Montana, Wyoming and South Dakota, Water Resour. Res., 26, 1981–2014, 1990.
Rees, C. E.: The sulphur isotopic composition of ocean water sulphate, Geochim. Cosmochim. Acta, 42, 377–381, 1978.
Sánchez-Martos, F., Pulido-Bosch, A., Molina-Sánchez, L., and Vallejos-Izquierdo, A.: Identification of the origin of salinization in groundwater using minor ions (Lower Andarax, Southeast Spain), Sci. Total Environ., 297, 43–58, 2002.
Schiavo, M. A., Hauser, S., and Povinec, P. P.: Stable isotopes of water as a tool to study groundwater–seawater interactions in coastal south-eastern Sicily, J. Hydrol., 364, 40–69, 2009.
Shi, Z. S., Chen, K. Y., Shi, J., He, H. J., and Liu, B. J.: Sulfur isotopic composition and its geological significance of the Paleogene sulfate rock deposited in Dongpu Depression, Petrol. Explor. Dev., 31, 44–46, 2004.
Song, Q. C.: Status quo of seawater intrusion in Daweijia karst water source of Dalian, China, J. Chengdu Univers. Technol., 40, 348–352, 2013.
Szynkiewicz, A., Witcher, J. C., Modelska, M., Borrok, D. M., and Pratt, L. M.: Anthropogenic sulfate loads in the Rio Grande, New Mexico (USA), Chem. Geol., 283, 194–209, 2011.
Szynkiewicz, A., Newton, B. T., Timmons, S. S., and Borrok, D. M.: The sources and budget for dissolved sulfate in a fractured carbonate aquifer, southern Sacramento Mountains, New Mexico, USA, Appl. Geochem., 27, 1451–1462, 2012.
Unland, N. P., Taylor, H. L., Bolton, B. R., and Cartwright, I.: Assessing the hydrogeochemical impact and distribution of acid sulphate soils, Heart Morass, West Gippsland, Victoria, Appl. Geochem., 27, 2001–2009, 2012.
Vitòria, L., Otero, N., Soler, A., and Canals, À.: Fertilizer characterization: Isotopic Data (N, S, O, C, and Sr), Environ. Sci. Technol., 38, 3254–3262, 2004.
Vogel, J. C.: Variability of carbon isotope fractionation during photosynthesis, in: Stable Isotopes and Plant Carbon – Water Relations, edited by: Ehleringer, J. R., Hall, A. E., and Farquhar, G. D., Academic Press, San Diego, CA, 29–38, 1993.
Wu, Q. and Jin, Y. J.: Characteristics of seawater intrusion in coastal karst groundwater system of Daweijia area, Dalian City, Geotech. Invest. Survey., 3, 43–44, 1990.
Wu, Q., Jin, Y. J., Li, D. A., and Xia, Y. H.: The mechanisms of seawater intrusion of karst groundwater system in Daweijia, Dalian City and the countermeasures of its control, Chin. J. Geol. Hazard Control, 1, 64–68, 1994.
Yang, J. L.: Hydrogeochemical reactions in seawater intrusion process in Daweijia water source area, Dalian City, Master's degree thesis, Jilin University, Changchun, China, 14–15, 2011.
Zhang, X. Y., Jiang, H., Zhang, Q. X., and Zhang, X.: Chemical characteristics of rainwater in northeast China, a case study of Dalian, Atmos. Res., 116, 151–160, 2012.
Zhao, C. R., Yang, J. L., Xiao, G. Q., Du, D., Pan, T., and Zhang, S. F.: Hydrogeochemical reactions and hydrogeological model for seawater intrusion processes in the Daweijia water source area Dalian City, Geol. Surv. Res., 35, 154–160, 2012.
Zhao, T. S.: Problems of karst groundwater development in littoral area and its ultimate control method, Chin. J. Geol. Hazard Control, 4, 73–77, 1991.
Short summary
We report new data for carbon and sulfur isotopes of the groundwater flow system in a coastal carbonate aquifer of northeast China. It shows how these can be used to determine the major processes controlling sulfate cycling and transport. Hopefully the study will be of broad international interest, and is expected to improve the understanding of techniques to determine impacts on groundwater quality and flow, leading to improved groundwater protection and monitoring strategies.
We report new data for carbon and sulfur isotopes of the groundwater flow system in a coastal...
