Hydrogeology Journal最新文献

{"title":"Migration and transformation mechanisms of iron in clayey sediments during compaction: studies using simulation experiments","authors":"Rui Liu, Teng Ma, Xinyan Liu, Yantao Jian, Juan Chen","doi":"10.1007/s10040-024-02783-1","DOIUrl":"https://doi.org/10.1007/s10040-024-02783-1","url":null,"abstract":"<p>The behavior of iron (Fe) in clayey aquitards has a significant effect on the groundwater environment. However, the release processes and impact of Fe within clayey sediments during compaction remain unknown. Two groups of simulation experiments were carried out to demonstrate the migration and transformation mechanisms of Fe during clayey sediment compaction. Experiment A, which simulated a natural deposition condition, revealed that pressurization changed the reaction environment from oxidative to reductive by isolating oxygen. Oxidation of ferrous ions was followed by reduction dissolution of poorly crystalline Fe (III) and crystalline Fe (III) oxides. Under the microbial utilization of organic matter, the main transformation process of sediment Fe was the dissimilatory reduction of poorly crystalline Fe (III) oxides. The total Fe concentration in pore water was 0.09–11.61 mg/L, with ferrous ions predominating among the Fe species. The lower moisture content (<span>(text{&lt;})</span>~36%) in the later stage of compaction inhibited the dissimilatory reduction of Fe (III), and the formation of Fe (II) minerals resulted in a decrease in Fe concentration. Experiment B, which simulated an artificial compaction state, revealed that the sediment Fe was primarily released by physical dissolution because of changes in pore structure and solubility. The concentration of total Fe in pore water was 0.02–1.96 mg/L, with a significant increase in response to a rapid increase in pressure. According to the estimates in the Chen Lake wetland (eastern China), the contribution of clay pore water release accounted for 19.9–31.9% of the average Fe concentration in groundwater during natural deposition.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"76 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140585860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertical hydraulic conductivity and layered heterogeneity: from measurements to models","authors":"Martin G. Shepley","doi":"10.1007/s10040-024-02773-3","DOIUrl":"https://doi.org/10.1007/s10040-024-02773-3","url":null,"abstract":"<p>Published laboratory and field estimates of vertical hydraulic conductivity (<i>K</i>_v) and the anisotropy ratio (<i>K</i>_h/<i>K</i>_v, where <i>K</i>_h is horizontal hydraulic conductivity) have been compared with equivalent groundwater model values, mainly for sedimentary strata. The results show that model <i>K</i>_v values tend to be higher and <i>K</i>_h/<i>K</i>_v values tend to be lower than field estimates for vertical length scales ≥10 m, particularly for coarse-grained unlithified sediments. This difference is attributed to the widespread use of the assumption of <i>K</i>_h/<i>K</i>_v = 1 and particularly <i>K</i>_h/<i>K</i>_v = 10 in groundwater models, regardless of the length scale or strata type represented. The origin of the <i>K</i>_h/<i>K</i>_v = 10 assumption is obscure and not founded on rigorous data analysis. <i>K</i>_h/<i>K</i>_v, and by inference <i>K</i>_v, is frequently an unimportant parameter in model construction and calibration. On balance, this model artefact is attributed to the common reliance on summary head calibration statistics that hide the inadequacies of the MODFLOW paradigm (<i>K</i>_xx = <i>K</i>_yy = <i>K</i>_h, <i>K</i>_zz = <i>K</i>_v) when used for large-scale hydrostratigraphic units with uniform parameterization, fixed <i>K</i>_h/<i>K</i>_v, and 1 ≤ <i>K</i>_h/<i>K</i>_v ≤ 10. However, thin, high-permeability aquifer models or well-defined aquifer/aquitard models are examples where such simplifying assumptions for <i>K</i>_h/<i>K</i>_v are workable, given groundwater quantity objectives. More realistic model values of <i>K</i>_v and <i>K</i>_h/<i>K</i>_v at length scales greater than field estimates could be obtained by independent calibration of <i>K</i>_v and <i>K</i>_h, use of larger-scale field estimates of <i>K</i>_v and multi-level piezometer/observation wells, and calibration to vertical head gradients separate from summary head calibration statistics.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"34 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of fracture aperture and matrix permeability on suitability of the equivalent porous medium model for steady-state flow in fractured porous media","authors":"Di Han, Lei Ma, Jiazhong Qian, Di Gao, Haichun Ma, Qiankun Luo, Pengyu Qiu","doi":"10.1007/s10040-024-02781-3","DOIUrl":"https://doi.org/10.1007/s10040-024-02781-3","url":null,"abstract":"<p>The equivalent porous medium (EPM) method is an efficient approximate processing method for calculating groundwater yield taking into account the equivalent permeability coefficient of a fractured geological medium. The EPM method finds wide application in addressing various hydrogeological problems ranging from local to regional scales; however, the adequacy of the EPM model for evaluating water head and velocity distributions has not been comprehensively assessed. This study quantitatively investigated the influence of fracture and matrix permeability on the EPM model’s suitability, defined by a 15% threshold for hydraulic-head prediction error, via numerical simulations. A fractured porous media system (fracture-matrix system) was considered as the prototype, and the EPM model simulation results were compared with those obtained using the discrete fracture-matrix (DFM) model. Results indicate a decrease in EPM suitability with larger fracture apertures. With a constant fracture aperture, the suitability of the EPM model increases as the matrix permeability increases. The size of the fracture aperture significantly affects the suitability of the EPM model, and it determines the point at which its suitability begins to increase and eventually stabilize. The fitted curve depicting the influence of matrix permeability on the suitability of the EPM model conforms to the Boltzmann formula, and the fracture aperture is linearly related to the parameter <i>x</i>₀ in the formula. The derived empirical formula enables quantitative assessment of the impact of fracture and matrix permeabilities on the suitability of the EPM model in fractured porous media.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"21 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A quantitative composition calculation model of mine water source based on “emblematic ions”","authors":"Huiqing Yuan, Zhimin Xu, Yajun Sun, Li Zhang, Ge Chen","doi":"10.1007/s10040-024-02774-2","DOIUrl":"https://doi.org/10.1007/s10040-024-02774-2","url":null,"abstract":"<p>Preventing water inrush disasters in mines is crucial for ensuring safe coal production; therefore, it is necessary to adopt a simple and effective method to determine the source and composition of mine water for effective water control in coal mines. The major ions content of groundwater in mining areas is easy to monitor, but the selection of appropriate parameters and calculation methods is key to being able to accurately discriminate between the water sources. In this study, the major ions content of 18 water samples was analyzed by cluster analysis, and a set of mean reference values was constructed for these ions in the mine-impacted groundwater of the saturated aquifers. The coefficient of variation was used to screen the parameters suitable for calculating the composition of mine water, and an innovative concept of characteristic ions, hereby defined as “emblematic” ions, was put forward. These were identified in this study as K⁺ + Na⁺, Ca²⁺, Mg²⁺ and HCO₃^–. The quantitative calculation model of the mine water source is established by using the fuzzy comprehensive evaluation method with the emblematic ions as the evaluation factor. Finally, the accuracy of the mathematical model is verified by comparing the calculated data with the actual observation data.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"23 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using major ions and stable isotopes to improve conceptualisation of a spring-aquifer system in the Galilee Basin, Australia","authors":"Robin Keegan-Treloar, Eddie W. Banks, Ian Cartwright, Dylan J. Irvine, John A. Webb, Adrian D. Werner, Matthew J. Currell","doi":"10.1007/s10040-024-02777-z","DOIUrl":"https://doi.org/10.1007/s10040-024-02777-z","url":null,"abstract":"<p>Developing conceptual models is a critical step in hydrogeological studies that should utilise multiple lines of evidence and data types to minimise conceptual uncertainty, particularly in data-sparse systems. This study used new and existing major ion and isotope (O, H, Sr, C) data sets to refine a previous hydraulic-head-based conceptual model of the Galilee Basin (Australia). The analyses provide evidence for the locations of recharge and discharge areas and determine hydrochemical processes along flow paths to improve understanding of potential source waters to the Doongmabulla Springs Complex (DSC) and to infer mixing within, or exchange between aquifer units. There was good agreement between previously inferred recharge and discharge areas defined using hydraulic head data and interpretations from hydrochemical evolution along groundwater flow pathways, at least where data were available. Major ion and isotope data suggest that the DSC likely receives water from both a relatively shallow, local flow path and a deeper regional flow path. This observation is relevant to previous concerns about threats to the DSC, as mine-induced drawdown may impact the relative contributions to spring discharge from different recharge sources and aquifers. Silicate weathering in the deeper Clematis Formation and Dunda Beds, and evapotranspiration in the overlying Moolayember Formation have strong control on the total dissolved solids content. These findings suggest that the Clematis Formation and Dunda Beds are hydrochemically distinct from the Moolayember Formation, with limited exchange between these aquifers, which has important implications for model conceptualisation and ongoing monitoring of mining activities in the Galilee Basin.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"10 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The seepage field around twin noncircular tunnels in anisotropic sloping","authors":"Fengran Wei, Huaning Wang, Guangshang Zeng","doi":"10.1007/s10040-024-02767-1","DOIUrl":"https://doi.org/10.1007/s10040-024-02767-1","url":null,"abstract":"<p>A new and efficient theoretical model for studying the seepage field around two noncircular tunnels in sloping ground is proposed through analytical derivation. The model considers the exact interaction between two tunnels with arbitrary shapes and locations, as well as the permeability anisotropy, whose principal orientation is along any direction. By applying the Schwartz alternating method and conformal mapping, the analytical solutions of the hydraulic head and pore pressure can be obtained. These solutions strictly satisfy all governing equations and conditions. The correctness and accuracy of the analytical solutions are verified by the good agreement between the theoretical and numerical results. The proposed theoretical model can be applied to the cases with any tunnel shape, slope angle, anisotropic direction and degree. The quantitative influences of the anisotropy ratio, slope angle and tunnel shape on the seepage field are obtained, and some useful charts are provided. The proposed model can efficiently and quickly predict the seepage flow around tunnels in anisotropic sloping ground.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"123 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Textile dyes as a source of groundwater contamination in Mandalay, Myanmar","authors":"Surya M. Freeman, Chit Wityi Oo, Melissa E. Lenczewski, Moe Myint Kyaw","doi":"10.1007/s10040-024-02775-1","DOIUrl":"https://doi.org/10.1007/s10040-024-02775-1","url":null,"abstract":"<p>Textile dyeing and weaving of traditional longyi garments have traditionally occurred in the Amarapura township of Mandalay, Myanmar, since 1822, transitioning from natural to chemical dyes in the early 1900s. With no current wastewater treatment facilities in Mandalay, dye effluents mix with other wastewaters in unlined canals dug near people’s homes and discharge into the local canals and groundwater. Because locals rely heavily on dug and tube wells for drinking, bathing, and cooking, this industry poses a major health hazard to the people in this region. The objective of this study was to identify the previously unknown composition of the textile dyes, as well as identify and quantify the concentrations of major ions and heavy metals found in dye effluents, and determine their impact on the local groundwater resources. Powdered dye samples from each stage of the dyeing process were characterized by the combination of heavy metals used to create these color dyes. Groundwater and surface water were also sampled. Results of analysis of the dye and water samples indicated that most of the heavy metals discharge into the groundwater environment. Textile dyeing is a major source of pollution and a health hazard to the residents of Amarapura township; however, the locals are not readily connecting dye practices to the issues with their drinking water. This study provides information on groundwater composition near dyeing industries in Amarapura township that may help inform further monitoring strategies and communicate the health risks of exposure to heavy metals for local people.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"29 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139928253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterizing deep groundwater using evidence from oil and gas exploration wells in the Lower Kutai Basin of Indonesia","authors":"Arifin, Mohammad Shamsudduha, Agus M. Ramdhan, Sena W. Reksalegora, Richard G. Taylor","doi":"10.1007/s10040-024-02776-0","DOIUrl":"https://doi.org/10.1007/s10040-024-02776-0","url":null,"abstract":"<p>Groundwater at depths exceeding 500 m can be an important source of freshwater. However, the characteristics of deep groundwater in many regions of the world, including Indonesia’s sedimentary basins, remain vaguely defined. This study investigates the pressure regimes, hydraulic head distributions, salinity, and hydrochemical facies of deep groundwater using available evidence from oil and gas exploration wells in the Lower Kutai Basin of Indonesia. Pressure measurements and wireline log data reveal three pressure regimes within the basin: hydrostatic, overpressure, and underpressure. The top of the overpressure varies, from close to the surface onshore to depths of ~4.5 and ~3.8 km in the Mahakam Delta and offshore, respectively. Computed hydraulic heads at the top of the overpressure range from ~191 m above sea level onshore to ~71 m below sea level offshore, and are indicative of regional groundwater flow. The observed salinity of deep groundwater within the basin indicates predominantly brackish or saline conditions. Fresh (total dissolved solids &lt; 1 g/L) groundwater to a depth of ~2 km is found at a small minority of wells onshore and in the delta; no fresh groundwater is found offshore. Four hydrochemical facies are observed: Na⁺/Cl^–, Ca²⁺/Cl^–, Na⁺/HCO₃^–, and Na⁺–Ca²⁺/HCO₃^–. This study indicates that deep fresh groundwater in the Lower Kutai Basin is of localized occurrence. Recharge from meteoric water may replenish deep fresh groundwater within the hydrostatic zone and sustain water supplies, whether brackish or fresh. Water produced from clay diagenesis is also cited as a possible process of freshening deep groundwater.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"12 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139921585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating geological, hydrogeological and geophysical data to identify groundwater resources in granitic basement areas (Guéra Massif, Chad)","authors":"H. Nouradine, C. Schamper, D. Valdes, I. Moussa, D. Ramel, V. Plagnes","doi":"10.1007/s10040-024-02766-2","DOIUrl":"https://doi.org/10.1007/s10040-024-02766-2","url":null,"abstract":"<p>In Chad, hard-rock aquifers are the main source of drinking water for the population located on basement areas. In these basement aquifers, and in particular those of the Guéra region, water drilling failure rates remain high despite research on one- and two-dimensional electrical resistivity techniques and lineaments as a means to improve access to the resource, mainly because these techniques are only used on an observational and structural basis to locate fractures. This study combines electrical resistivity tomography (ERT) with geology, hydrogeology and geomorphology, in order to characterise the structure and geometry of the aquifer system, assess borehole productivity and determine the factors controlling it. After validating the large dataset and its representativeness, 315 high- and low-yield wells, of which 41 have complete geophysical datasets, were selected. This large dataset allows a multi-parameter approach to (1) better characterise each facies according to its electrical resistivity and (2) clearly identify the main formations constituting the local conceptual hydrogeological model. The most suitable areas for productive boreholes are characterised by the presence of an overburden of &lt;20 m depth, well-developed weathered and fractured horizons of granites and biotite granites (preferably) containing little or no clay, and a nearby drainage network. The most substantial flow rates are found in the first 30 m of the fissured horizon, below the base of the alterites. The experience gained from the present study will guide future analysis of ERT sections in order to reduce the probability of drilling dry wells.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"172 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139910084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Examination of players’ strategies in determining the optimal groundwater exploitation by game theory","authors":"Mehdi Komasi, Amir Alizadefard, Masoud Ahmadi","doi":"10.1007/s10040-024-02770-6","DOIUrl":"https://doi.org/10.1007/s10040-024-02770-6","url":null,"abstract":"<p>The growing water demand and decreasing groundwater recharge have made groundwater management one of the most severe challenges in most countries of the world, and Iran is no exception. This study aims to examine the optimal groundwater exploitation in three cropping years (2020–2021, 2021–2022, and 2022–2023) in a study of the Silakhor plain, Iran, by use of game theory. Game theory problems involve multidecision-making to address conflicting objectives. Thus, farmers and environmentalists were considered as game theory ‘players’ and their strategies were examined. Two groups of groundwater exploitation scenarios were considered based on both groundwater recharge and the current exploitation. Optimal groundwater exploitation was determined. The results of determining exploitation scenarios based on the current exploitation show that the optimal groundwater exploitation in the Silakhor plain is 103.9, 101, and 99 million m³ in the next 3 years, respectively; these values decrease by 6.7, 7, and 7.4%, respectively, by determining exploitation scenarios based on groundwater recharge. The second major finding is that the farmers’ net benefit will increase by 18% by applying the optimal cropping pattern. Taken together, the results show that the design of the game structure is very important and the basis of the players’ strategies must be determined before using conflict resolution methods.</p>","PeriodicalId":13013,"journal":{"name":"Hydrogeology Journal","volume":"7 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139910156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}