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Articoli di riviste sul tema "Hydrochemical modeling"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Guo, Liang, Yuanyuan Ding, Haisong Fang, Chunxue An, Wanjun Jiang, and Nuan Yang. "Integrating Inverse Modeling to Investigate Hydrochemical Evolution in Arid Endorheic Watersheds: A Case Study from the Qaidam Basin, Northwestern China." Water 17, no. 14 (2025): 2074. https://doi.org/10.3390/w17142074.

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The hydrochemical characteristics and evolution mechanisms of groundwater are critical for accurately understanding the input–output budget of hydrochemical constituents in pristine groundwater. However, few studies have analyzed the changes in mineral precipitation and dissolution equilibrium along the groundwater flow path, especially in arid regions. This study integrated hydrochemical analysis, stable isotopes, and inverse hydrochemical modeling to identify groundwater recharge sources, hydrochemical evolution, and controlling mechanisms in an arid endorheic watershed, northwestern China.

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2

Dzombak, David A., and M. Ashraf Ali. "Hydrochemical Modeling of Metal Fate and Transport in Freshwater Environments." Water Quality Research Journal 28, no. 1 (1993): 7–50. http://dx.doi.org/10.2166/wqrj.1993.003.

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Abstract During the last decade there has been growing interest in the development of hydrochemical models (coupled transport-chemistry-biology models) for better understanding and, eventually, for predicting the fate and transport of metals in freshwater environments. While there has been much discussion of such models and their submodels, and detailed examinations of the mechanistic descriptions and mathematics involved in their formulation, there has been relatively little attention focused on how well they perform in describing field data. This paper provides a look at the state-of-the art

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3

Liu, Yi, Mingqian Li, Ying Zhang, Xiaofang Wu, and Chaoyu Zhang. "Analysis of the Hydrogeochemical Characteristics and Origins of Groundwater in the Changbai Mountain Region via Inverse Hydrogeochemical Modeling and Unsupervised Machine Learning." Water 16, no. 13 (2024): 1853. http://dx.doi.org/10.3390/w16131853.

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This study employed hydrochemical data, traditional hydrogeochemical methods, inverse hydrogeochemical modeling, and unsupervised machine learning techniques to explore the hydrogeochemical traits and origins of groundwater in the Changbai Mountain region. (1) Findings reveal that predominant hydrochemical types include HCO3−Ca·Mg, HCO3−Ca·Na·Mg, HCO3−Mg·Na, and HCO3−Na·Mg. The average metasilicic acid content was found to be at 49.13 mg/L. (2) Rock weathering mechanisms, particularly silicate mineral weathering, primarily shape groundwater chemistry, followed by carbonate dissolution. (3) Wat

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4

Myagkov, Sergey. "THREE-DIMENSIONAL (3-D) SPATIAL-TEMPORAL ANALYSIS OF THE HYDROCHEMICAL MODE OF THE SYRDARIA RIVER." Journal of Science and Innovative Development 3, no. 2 (2020): 83–88. http://dx.doi.org/10.36522/2181-9637-2020-2-10.

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The analysis of the hydrochemical regime of the rivers feeding the irrigated territories of agricultural land in the river basin is essential to develop scientifically based recommendations on the rational use of water and land resources. Anthropogenic influence on water and land resources in the basins of the rivers inevitably affects the change of surface water quality. A new method is proposed for analyzing the hydrochemical regime of the rivers based on three-dimensional (3-D) modeling of the Spatio-temporal distribution of water mineralization along the length of the main river. This meth

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5

Tunakova, Yulia, Svetlana Novikova, Vsevolod Valiev, Evgenia Baibakova, and Ksenia Novikova. "The Use of Neural Network Modeling Methods to Determine Regional Threshold Values of Hydrochemical Indicators in the Environmental Monitoring System of Waterbodies." Sensors 23, no. 13 (2023): 6160. http://dx.doi.org/10.3390/s23136160.

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The regulation of the anthropogenic load on waterbodies is carried out based on water quality standards that are determined using the threshold values of hydrochemical indicators. These applied standards should be defined both geographically and differentially, taking into account the regional specifics of the formation of surface water compositions. However, there is currently no unified approach to defining these regional standards. It is, therefore. appropriate to develop regional water quality standards utilizing modern technologies for the mathematical purpose of methods analysis using bo

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6

Wei, Zhonglin, Yuan Ji, Huiming Fang, Lujia Yu, and Donglin Dong. "Rapid Source Identification of Mine Water Inrush Using Spectral Data Combined with BA-RBF Modeling." Water 17, no. 6 (2025): 790. https://doi.org/10.3390/w17060790.

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Coal mine safety is vital not only for maintaining production operations but also for ensuring the industry’s sustainable development. The threat posed by mine water hazards is especially severe, growing more critical as mining activities become more intense and reach greater depths. Currently, common methods for identifying water sources mainly depend on hydrochemical data, supplemented by analyses of water level and temperature changes. However, due to constraints in cost, time, and the complexity of mining conditions, there is still significant potential for enhancing water source identific

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7

Пичугина, Анна Игоревна, and Ирина Геннадьевна Критова. "MODELING OF HYDROCHEMICAL OXIDATION OF HEAZLEWOODITE WITH NITRIC ACID." Вестник Тверского государственного университета. Серия: Химия, no. 3(41) (November 10, 2020): 65–72. http://dx.doi.org/10.26456/vtchem2020.3.7.

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В работе представлены результаты математического моделирования окислительного растворения хизлевудита в растворах азотной кислоты в условиях равнодоступной поверхности вращающегося диска с применением метода полного факторного эксперимента. Получены и проанализированы зависимости скорости процесса гидрохимического окисления сульфида никеля (W, моль/смс) от продолжительности взаимодействия (τ, с), влияния концентрации азотной кислоты (С, моль/дм), частоты вращения диска (ω, с) и температуры (Т, К). Определены основные кинетические параметры: константа скорости и эффективная энергия активации пр

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8

Yang, Nuan, Guangcai Wang, Zheming Shi, et al. "Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China." Water 10, no. 11 (2018): 1667. http://dx.doi.org/10.3390/w10111667.

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Groundwater is a critical water resource for human survival and economic development in arid and semi-arid areas. It is crucial to understand the groundwater circulation and hydrochemical evolution for sustainable management and utilization of groundwater resources in those areas. To this end, an investigation of the hydrochemical characteristics of surface water and groundwater was conducted in Nomhon, an arid area located in the Qaidam Basin, northwest China, by using hydrochemical (major and trace elements) and stable isotopes (δD and δ18O) approaches. Stable isotopes and ion ratios were an

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9

Yu, Shengpin, Tianye Wang, Ximin Bai, et al. "Hydrochemical Characteristics and Formation Mechanisms of Groundwater in the Nanmiao Emergency Groundwater Source Area, Yichun, Western Jiangxi, China." Water 17, no. 14 (2025): 2063. https://doi.org/10.3390/w17142063.

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The Nanmiao Emergency Groundwater Source Area, rich in H2SiO3, serves as a strategic freshwater reserve zone in western Jiangxi Province. However, the mechanisms underlying groundwater formation in this area remain unclear. This study applied a combination of statistical analysis, isotopic tracing, and hydrochemical modeling to reveal the hydrochemical characteristics and origins of groundwater in the region. The results indicate that Na+ and Ca2+ dominate the cations, while HCO3− and Cl− dominate the anions. Groundwater from descending springs is characterized by low mineralization and weak a

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10

Yakhno, Oleg, Ihor Hnativ, and Roman Hnativ. "Influence of cavitation processes on river water purification of mountain streams." Mechanics and Advanced Technologies 6, no. 1 (2022): 62–69. http://dx.doi.org/10.20535/2521-1943.2022.6.1.254613.

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Problems: The article considers the study of the influence of cavitation phenomena in hydrodynamically active areas of mountain rivers on the processes of natural self-purification of water. The paper considers the experimental results of determining the change in seasonal indicators of the hydrochemical composition of surface waters in the Stryi river basin. Objective: to determine the impact of hydrodynamically active areas (HAA) of mountain rivers on the processes of natural self-purification and to develop methods of laboratory modeling of these areas to determine the hydrochemical p

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Feng, Shaoyi, Zhongpei Liu, Yuping Han, Lu Wang, Zhipeng Hu, and Mingkun Qi. "Effect of Groundwater Depression Cone on the Hydrochemical Evolution Process in the People’s Victory Canal Irrigation Area, China." Processes 10, no. 12 (2022): 2563. http://dx.doi.org/10.3390/pr10122563.

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The over−exploitation of shallow groundwater in the People’s Victory Canal irrigation area has led to the continuous decline in the groundwater level. The formation of a groundwater drawdown cone has changed the original runoff conditions and hydrochemical environment. Based on the groundwater data in the irrigated area from 1996 to 2022, multivariate statistical analysis, traditional hydrochemical methods, and inverse geochemical modeling were used to reveal the impact of the formation of the groundwater depression cone on hydrochemical evolution. The results show that the formation of the gr

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12

Кузьмин, В. В., and К. А. Болдырев. "Hydrochemical modeling of migration of dissolved oil products in groundwater." Vodosnabzhenie i sanitarnaia tehnika, no. 11 (November 17, 2021): 43–51. http://dx.doi.org/10.35776/vst.2021.11.05.

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Изложена методика прогнозирования распространения нефтепродуктов группы BTEX (бензол, толуол, этилбензол, ксилолы) в подземных водах на основе гидрохимического моделирования с учетом изменения окислительно-восстановительных и кислотно-щелочных свойств раствора в процессе биодеградации нефтепродуктов. Представлена геохимическая модель биологического разложения нефтепродуктов комплекса BTEX на основе модифицированной кинетики Моно с учетом реакций между акцепторами, продуктами реакции биодеградации и неорганическими компонентами раствора. Приведены примеры геохимического моделирования, демонстри

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13

Yu, Xiao, Yunhui Zhang, Pei Liu, Haoqing Huang, and Xun Huang. "Hydrochemical characteristics and D–O–Sr isotopes of groundwater and surface water in the northern Longzi county of southern Tibet (southwestern China)." Open Geosciences 14, no. 1 (2022): 111–19. http://dx.doi.org/10.1515/geo-2020-0334.

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Abstract The protection of water resource has been the significant mission globally. Hydrochemical compositions and recharge source are the critical tools to analyze the water quality. In this study, 18 surface water and 5 groundwater samples were collected along the Xiongqu and Sequ rivers in the northern Longzi county of southern Tibet. The combination of factor analysis, correlation of major ions, geochemical modeling, and D–O–Sr isotopes were employed to clarify the hydrochemical compositions and recharge source. The concentration of major ions followed the abundance order of SO 4 2 − {\te

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14

Novotni-Horčička, Nikolina, Tamara Marković, Igor Karlović, and Ivan Kovač. "Application of Hydrochemical Parameters as Tool for Sustainable Management of Water Supply Network." Sustainability 16, no. 21 (2024): 9558. http://dx.doi.org/10.3390/su16219558.

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Effective management of Water Supply Systems (WSSs) is crucial for ensuring safe drinking water. The WSS of Varaždin County is a complex network involving three groundwater sources: Bartolovec and Vinokovščak wellfields (alluvial aquifers) and Bela karstic spring. To achieve a comprehensive characterization of WSSs, routine laboratory data was integrated with stable isotopes and geochemical modeling. Within this study, all measured parameters remain below the Maximum Contaminant Level (MCL), ensuring water safety for human consumption. The Piper diagram identified variations in water sources b

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15

Ma, Qingshan, Weiya Ge, and Fujin Tian. "Geochemical Characteristics and Controlling Factors of Chemical Composition of Groundwater in a Part of the Nanchang Section of Ganfu Plain." Sustainability 14, no. 13 (2022): 7976. http://dx.doi.org/10.3390/su14137976.

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This work aims to investigate the hydrochemical characteristics and formation mechanisms of shallow groundwater in a part of the Nanchang section of Ganfu plain. The hydrochemical data from 90 groundwater samples were interpreted by the methods of mathematical statistics, Piper diagrams, Gibbs plots, ratio graphs of ions, and geochemical modeling. The results show that shallow groundwater is weakly acidic, the average concentration of cation in groundwater decrease in Ca2+ > Na+ > Mg2+ > K+, and the abundance is in the order HCO3− > NO3− > SO42− > Cl− for anions. The hydroche

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16

Olariu, Andra, and Marin Palcu. "The origin of ammonium in carbonated mineral waters and its underground transport to one production well in Middle Ciuc Depression from Eastern Carpathians." SIMI 2019, SIMI 2019 (September 20, 2019): 259–78. http://dx.doi.org/10.21698/simi.2019.fp34.

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In many cases in Romania, the mineral waters (in the Neogene Volcanic area of the Eastern Carpathians), especially the carbonate waters, have ammonium in concentration over 0.5 mg/l. The main issue regarding the presence of ammonium is identifying if the concentration is due to the anthropogenic pollution or it is of endogenic origin. The geological, hydrogeological and hydrochemical data analysis resulted in a conceptual model of the aquifer’s spatial position, groundwater movement and mineralization, and ammonium occurrence. The geological and tectonic aspects, aquifer’s recharging, groundwa

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IWATSUKI, Teruki, Takashi MIZUNO, Takanori KUNIMARU, Yuki AMANO, Tatsuji MATSUZAKI, and Takeshi SEMBA. "Expert system of hydrochemical modeling methods for geological disposal of HLW." Journal of Nuclear Fuel Cycle and Environment 19, no. 2 (2012): 51–64. http://dx.doi.org/10.3327/jnuce.19.51.

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El Alfy, Mohamed. "Hydrochemical Modeling and Assessment of Groundwater Contamination in Northwest Sinai, Egypt." Water Environment Research 85, no. 3 (2013): 211–23. http://dx.doi.org/10.2175/106143012x13560205145055.

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Korshenko, A. N., A. R. Alyautdinov, and L. A. Ushakova. "MODELING AND ANALYSIS OF SPATIAL HYDROCHEMICAL STATE OF NEVA BAY WATERS." Proceedings of the International conference “InterCarto/InterGIS” 1, no. 22 (2016): 120–27. http://dx.doi.org/10.24057/2414-9179-2016-1-22-120-127.

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Kazmierczak, J., S. Müller, B. Nilsson, et al. "Groundwater flow and heterogeneous discharge into a seepage lake: Combined use of physical methods and hydrochemical tracers." Water Resources Research 52, no. 11 (2016): 9109–30. http://dx.doi.org/10.1002/2016wr019326.

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AbstractGroundwater discharge into a seepage lake was investigated by combining flux measurements, hydrochemical tracers, geological information, and a telescopic modeling approach using first two‐dimensional (2‐D) regional then 2‐D local flow and flow path models. Discharge measurements and hydrochemical tracers supplement each other. Discharge measurements yield flux estimates but rarely provide information about the origin and flow path of the water. Hydrochemical tracers may reveal the origin and flow path of the water but rarely provide any information about the flux. While aquifer intera

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21

Li, Mingming, Xinfeng Wang, Jiangong You, et al. "Hydrochemical Formation Mechanisms and Source Apportionment in Multi-Aquifer Systems of Coastal Cities: A Case Study of Qingdao City, China." Sustainability 17, no. 13 (2025): 5988. https://doi.org/10.3390/su17135988.

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This study systematically unravels the hydrochemical evolution mechanisms and driving forces in multi-aquifer systems of Qingdao, a coastal economic hub. Integrated hydrochemical analysis of porous, fissured, and karst water, combined with PHREEQC modeling and Positive Matrix Factorization (PMF), deciphers water–rock interactions and anthropogenic perturbations. Groundwater exhibits weak alkalinity (pH 7.2–8.4), with porous aquifers showing markedly higher TDS (161.1–8203.5 mg/L) than fissured (147.7–1224.8 mg/L) and karst systems (361.1–4551.5 mg/L). Spatial heterogeneity reveals progressive

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Пичугина, Анна Игоревна, and Дарья Дмитриевна Гончар. "MECHANISM OF HYDROCHEMICAL OXIDATION OF HEAZLEWOODITE IN NITRIC ACID." Вестник Тверского государственного университета. Серия: Химия, no. 4(42) (December 21, 2020): 83–89. http://dx.doi.org/10.26456/vtchem2020.4.9.

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В работе представлена математическая модель гидрохимического окисления хизлевудита в разбавленных растворах азотной кислоты. Дана физико-химическая интерпретация основных кинетических характеристик процесса растворения: константа скорости и эффективная энергия активации. Установлены режимы взаимодействия хизлевудита с азотной кислотой, выявлены вероятные лимитирующие стадии. По наблюдаемым кинетическим закономерностям при моделировании процесса, предложен механизм гидрохимического окисления хизлевудита. The paper presents a mathematical model of the hydrochemical oxidation of heazlewoodite in

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23

Titov, Konstantin V., Alexander Levitski, Pavel K. Konosavski, Andrey V. Tarasov, Yuri T. Ilyin, and Michel A. Buès. "Combined application of surface geoelectrical methods for groundwater flow modeling: A case history." GEOPHYSICS 70, no. 5 (2005): H21—H31. http://dx.doi.org/10.1190/1.2076747.

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Electrical methods [electrical profiling and sounding, induced polarization (IP), and self-potential (SP)], combined with geochemical and hydrochemical surveys, were applied to characterize shallow sediments at a site contaminated by oil-related brines. The site is located within the Romashkinskoye oil field (Tatarstan Republic, Russian Federation). Results of geochemical and hydrochemical surveys, as well as those of electrical profiling, revealed no individual haloes of contaminant in the soil and groundwater, which suggests that the entire site is contaminated. Vertical electrical IP soundi

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Beretta, Giovanni Pietro, Monica Avanzini, Tomaso Marangoni, et al. "Groundwater modeling of the withdrawal sustainability of Cannara artesian aquifer (Umbria, Italy)." Acque Sotterranee - Italian Journal of Groundwater 7, no. 3 (2018): 47–60. http://dx.doi.org/10.7343/as-2018-333.

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The Cannara aquifer (Umbria, Italy) has been known for more than a century, and is one of the main drinking water supplies in the Umbria Region. In the beginning it was used for irrigation purposes, since this area was mainly agricultural up to the 1960s. The groundwater—exploited by Umbra Acque S.p.A. (a Company supplying drinking water)—is 150 m under ground level and is contained in a porous confined aquifer, which originally had artesian characteristics. Exploitation of 200–300 l/s with nine wells caused a reduction of piezometric level, maintaining the confined aquifer conditions, except

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Siddique, Jamil, Jin Menggui, Munir H. Shah, Asfandyar Shahab, Faisal Rehman, and Umair Rasool. "Integrated Approach to Hydrogeochemical Appraisal and Quality Assessment of Groundwater from Sargodha District, Pakistan." Geofluids 2020 (December 29, 2020): 1–15. http://dx.doi.org/10.1155/2020/6621038.

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Hydrochemical characteristics and aquifer properties present a better understanding of the mitigation of groundwater pollution, which has become one of the leading environmental concerns and threats to the sustainable ecosystem. Seventy-seven groundwater samples were collected from Sargodha District (Pakistan) and characterized for their physical and chemical properties. The analytical data were processed for the evaluation of the processes that control the groundwater chemistry using various drinking and agricultural indices with statistical and hydrochemical modeling. The predominant hydroch

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Wang, Rui, Xiaohan Li, Fenggang Dai, et al. "Hydrochemical Response of Karst Groundwater to Rapid Urbanization in Xingtai, North China." Water 15, no. 12 (2023): 2304. http://dx.doi.org/10.3390/w15122304.

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Karst groundwater is the main water source for domestic, industrial, and agricultural needs in Xingtai City, North China. The objective of this study was to comprehensively access changes in the hydrochemical characteristics and evolution of karst groundwater in response to rapid urbanization. Water samples from the late 2010s and the 1970s were compared utilizing statistical analysis, hydrochemical diagrams, and inverse simulation technology. The total dissolved solids (TDS), total hardness (TH), NO3−, and Fe contents were significantly higher in the more recently obtained karst groundwater s

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Raffensperger, J. P., and G. Garven. "The formation of unconformity-type uranium ore deposits; 2, Coupled hydrochemical modeling." American Journal of Science 295, no. 6 (1995): 639–96. http://dx.doi.org/10.2475/ajs.295.6.639.

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Wang, Ziqi, Ting Lu, Shengnan Li, et al. "Hydrochemical Characteristics and Evolution Laws of Groundwater in Huangshui River Basin, Qinghai." Water 17, no. 9 (2025): 1349. https://doi.org/10.3390/w17091349.

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Groundwater plays a leading role in ecological environment protection in semi-arid regions. The Huangshui River Basin is located in the Tibetan Plateau and Loess Plateau transition zone of semi-arid areas. Its ecological environment is relatively fragile, and there is an urgent need for systematic study of the basin to develop a groundwater environment and realize the rational and efficient development of water resources. In this study, methodologically, we combined the following: 1. Field sampling (271 groundwater samples across the basin’s hydrogeological units); 2. Comprehensive laboratory

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Mohebbi Tafreshi, Ghazaleh, and Amin Mohebbi Tafreshi. "Statistical approaches and hydrochemical modeling of groundwater in the Golpayegan Plain aquifer, Iran." Modeling Earth Systems and Environment 6, no. 4 (2020): 2391–404. http://dx.doi.org/10.1007/s40808-020-00822-w.

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Wästeby, Niklas, Alasdair Skelton, Elin Tollefsen, et al. "Hydrochemical monitoring, petrological observation, and geochemical modeling of fault healing after an earthquake." Journal of Geophysical Research: Solid Earth 119, no. 7 (2014): 5727–40. http://dx.doi.org/10.1002/2013jb010715.

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Sha, Jian, Xue Li, and Jingjing Yang. "Estimation of Watershed Hydrochemical Responses to Future Climate Changes Based on CMIP6 Scenarios in the Tianhe River (China)." Sustainability 13, no. 18 (2021): 10102. http://dx.doi.org/10.3390/su131810102.

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The impacts of future climate changes on watershed hydrochemical processes were assessed based on the newest Shared Socioeconomic Pathways (SSP) scenarios in Coupled Model Intercomparison Project Phase 6 (CMIP6) in the Tianhe River in the middle area of China. The monthly spatial downscaled outputs of General Circulation Models (GCMs) were used, and a new Python procedure was developed to batch pick up site-scale climate change information. A combined modeling approach was proposed to estimate the responses of the streamflow and Total Dissolved Nitrogen (TDN) fluxes to four climate change scen

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Dar’ya Ivanovna, PETROVA. "Technogenic transformation of the underground hydrosphere of Kazan. Lower Kazanian aquifer complex." NEWS of the Ural State Mining University, no. 2 (June 15, 2021): 114–22. http://dx.doi.org/10.21440/2307-2091-2021-2-114-122.

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Relevance. By the beginning of the XXI century, the growth of cities, population concentration and the revival of industrial production led to an intense technogenic pressure on the underground hydrosphere. In ecological and hydrogeological studies, it becomes necessary to conduct monitoring observations of groundwater based on GIS technologies. Purpose of the work: study of the hydrogeochemical characteristics of underground waters of the aquiferous lower Kazanian carbonate-terrigenous complex to provide Kazan with high-quality drinking water from protected underground sources. Research metho

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Sasamoto, Hiroshi, Mikazu Yui, and Randolph C. Arthur. "Hydrochemical characteristics and groundwater evolution modeling in sedimentary rocks of the Tono mine, Japan." Physics and Chemistry of the Earth, Parts A/B/C 29, no. 1 (2004): 43–54. http://dx.doi.org/10.1016/j.pce.2003.11.003.

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Chen, Kouping, and Jiu Jimmy Jiao. "Modeling freshening time and hydrochemical evolution of groundwater in coastal aquifers of Shenzhen, China." Environmental Earth Sciences 71, no. 5 (2013): 2409–18. http://dx.doi.org/10.1007/s12665-013-2641-3.

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Bulavina, Aleksandra. "Modeling of water pollution in the basins of Arctic rivers." E3S Web of Conferences 390 (2023): 04009. http://dx.doi.org/10.1051/e3sconf/202339004009.

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The goal hereof is mainly to model water pollution in the Arctic rivers on the basis of known natural and anthropogenic data on the drainage basins. The quality of water in rivers depends on the amount of pollutants entering the drainage basin and on the latter’s ability to convert such substances. This paper investigates merging these two components into a single integral model by finding a balanced system of inputs. After reviewing the literature and theorizing on the concept, the model was tested on the river systems of the European part of the Russian Arctic. The experiments proved the int

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Glok Galli, M., D. E. Martínez, and E. E. Kruse. "The carbon budget of a large catchment in the Argentine Pampa plain through hydrochemical modeling." Science of The Total Environment 493 (September 2014): 649–55. http://dx.doi.org/10.1016/j.scitotenv.2014.06.032.

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37

Olofinlade, W. S., S. O. Daramola, and O. F. Olabode. "Hydrochemical and statistical modeling of groundwater quality in two constrasting geological terrains of southwestern Nigeria." Modeling Earth Systems and Environment 4, no. 4 (2018): 1405–21. http://dx.doi.org/10.1007/s40808-018-0486-1.

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38

Varotsos, Costas A., Vladimir F. Krapivin, Ferdenant A. Mkrtchyan, and Yong Xue. "Optical Spectral Tools for Diagnosing Water Media Quality: A Case Study on the Angara/Yenisey River System in the Siberian Region." Land 10, no. 4 (2021): 342. http://dx.doi.org/10.3390/land10040342.

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This paper presents the results of spectral optical measurements of hydrochemical characteristics in the Angara/Yenisei river system (AYRS) extending from Lake Baikal to the estuary of the Yenisei River. For the first time, such large-scale observations were made as part of a joint American-Russian expedition in July and August of 1995, when concentrations of radionuclides, heavy metals, and oil hydrocarbons were assessed. The results of this study were obtained as part of the Russian hydrochemical expedition in July and August, 2019. For in situ measurements and sampling at 14 sampling sites,

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El Chaal, Rachid, Khalid Hamdane, and Moulay Othman Aboutafail. "Application of Multidimensional Statistical Methods to the Hydrochemical Study with R Software." Mathematical Modelling of Engineering Problems 9, no. 6 (2022): 1669–78. http://dx.doi.org/10.18280/mmep.090628.

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Conducting extensive, time-consuming analysis campaigns is a typical technique to better understand and manage surface water quality. These usually generate a substantial amount of data that is challenging to comprehend. Principal component analysis may be advantageous for such a project (PCA). From the perspective of such an application, eight physico-chemical parameters are important: Sodium (Na+), Bicarbonate (HCO3-), Magnesium (Mg2+), Total Alkalinity (as CaCO3), Chlorides (Cl-), Potassium (K+), Calcium (Ca2+), Sulfates (SO42-), coming from the analysis of 100 water samples collected betwe

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40

Moran-Ramirez, Janete, and Jose Alfredo Ramos-Leal. "The VISHMOD Methodology with Hydrochemical Modeling in Intermountain (Karstic) Aquifers: Case of the Sierra Madre Oriental, Mexico." Journal of Geography and Geology 6, no. 2 (2014): 132. http://dx.doi.org/10.5539/jgg.v6n2p132.

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Abstract (sommario):

Hydrogeochemistry can be studied qualitatively using graphics such as scatter plots and Piper, Durov, and Schoeller diagrams, among others, and quantitatively by applying mass balance mixing models. The VISHMOD methodology (Virtual Samples in Hydrochemical Modeling) combines these two forms of hydrogeochemical characterizations. It is performed by applying hydrogeochemical modeling to virtual samples. This method makes standardization and control possible in order to demonstrate the extent to which a model is able to reproduce field measurements. Therefore, hydrogeochemical models of hydrogeol

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Peiyue, Li, Qian Hui, and Wu Jianhua. "Hydrochemical Formation Mechanisms and Quality Assessment of Groundwater with Improved TOPSIS Method in Pengyang County Northwest China." E-Journal of Chemistry 8, no. 3 (2011): 1164–73. http://dx.doi.org/10.1155/2011/251918.

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Inverse geochemical modeling was used in this paper to quantitatively study the formation mechanisms of groundwater in Pengyang County, China. An improved TOPSIS method based on entropy weight was used to perform groundwater quality assessment in this area. The assessment results show that the groundwater in the study area is fit for human consumption and the high concentrations of some elements can be attributed to the strong water-rock interactions. The inverse geochemical modeling reveals that the dominant reactions in different parts of the study area are different. In the south part of th

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42

Pinault, J. L., V. Plagnes, L. Aquilina, and M. Bakalowicz. "Inverse modeling of the hydrological and the hydrochemical behavior of hydrosystems: Characterization of Karst System Functioning." Water Resources Research 37, no. 8 (2001): 2191–204. http://dx.doi.org/10.1029/2001wr900018.

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43

Bergström, S., B. Carlsson, G. Sandberg, and L. Maxe. "Integrated Modelling of Runoff, Alkalinity, and pH on a Daily Basis." Hydrology Research 16, no. 2 (1985): 89–104. http://dx.doi.org/10.2166/nh.1985.0008.

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Abstract (sommario):

Based on the experience from runoff and groundwater recharge simulation a model system has been developed for terrestrial, hydrochemical, and hydrological simulations. The system emphasizes the role of temporary or long term storage in the aquifers of a basin and, separately, accounts for each rainfall or snowmelt event from its entrance into the ground until mixing in the river system. The model is primarily intended for simulation of natural short term variations in alkalinity and pH in running waters. The hydrochemical processes are modelled in a semi-empirical way without assumption of com

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Duan, Rui, Liang Chang, Xiaofan Gu, et al. "The Hydrogeochemical Processes of Groundwater in the Bieletan Area, the Western Potash Production Region in China." Water 16, no. 13 (2024): 1833. http://dx.doi.org/10.3390/w16131833.

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Abstract (sommario):

The hydrogeochemical research of groundwater in the Bieletan area, China’s largest potash producing zone, used a variety of methods, including multivariate analysis, saturation index, and hydrogeochemical modeling. Water samples were collected and analyzed for physicochemical parameters, along with soluble ions from soil cores. The results showed that total dissolved solids (TDS) of groundwater exceeded 300 g/L, with the main hydrochemical characteristics being Cl-Mg type and Cl-Na type. Groundwater is recharged by lake water and canal water, with evaporation being the main factor affecting wa

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45

Kayukova, E. P., and E. A. Filimonova. "Quality of fresh groundwater of the Crimean Mountains (the Bodrak River Basin)." Moscow University Bulletin. Series 4. Geology, no. 1 (December 15, 2022): 79–88. http://dx.doi.org/10.33623/0579-9406-2022-1-79-88.

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Abstract (sommario):

The quality of fresh groundwater in the foothills of the Crimea, including that used for the water supply of the Crimean base of St. Petersburg State University and the Crimean educational and scientific center of Lomonosov Moscow State University, is considered. The results of longterm monitoring of the chemical composition of fresh water used for drinking purposes are presented and priority pollutants are identified. Hydrochemical modeling was carried out to calculate transport forms of chemical elements and subsequent assessment of their toxicity. The study area is located in the area of ac

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46

Delsman, J. R., K. R. M. Hu-a-ng, P. C. Vos, et al. "Paleo-modeling of coastal saltwater intrusion during the Holocene: an application to the Netherlands." Hydrology and Earth System Sciences 18, no. 10 (2014): 3891–905. http://dx.doi.org/10.5194/hess-18-3891-2014.

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Abstract (sommario):

Abstract. Coastal groundwater reserves often reflect a complex evolution of marine transgressions and regressions, and are only rarely in equilibrium with current boundary conditions. Understanding and managing the present-day distribution and future development of these reserves and their hydrochemical characteristics therefore requires insight into their complex evolution history. In this paper, we construct a paleo-hydrogeological model, together with groundwater age and origin calculations, to simulate, study and evaluate the evolution of groundwater salinity in the coastal area of the Net

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47

Kirvel, Ivan, Vitalii Martyniuk, Ivan Kovalchuk, Ion Andronache, Vasyl Korbutiak, and Ivan Zubkovych. "A Cartographic Landscape Analysis of the Geo-Ecological Condition of the Natural Reserve Object—Lake Doshne (Volyn Polissya, Ukraine)." Limnological Review 24, no. 3 (2024): 385–405. http://dx.doi.org/10.3390/limnolrev24030023.

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Abstract (sommario):

The cartographic landscape analysis of Lake Doshne employs geographic landscape methods, GIS cartographic modeling, and geo-ecological analysis. This study includes hydrochemical analysis of the lake’s water mass, focusing on saline blocks, tropho-saprobiological indicators, and specific toxic action indicators. Three geological sections of anthropogenic and pre-Quaternary complexes, along with a geological–lithological transverse profile of the lake basin, were developed. Additionally, a geographical landscape model of the lake’s natural aquatic complex was presented, distinguishing littoral–

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48

Zhuo, Linyang, Xun Zhou, Changpei Zou, et al. "Hydrochemical Characteristics and Association of Hot Springs on Small-Scale Faults in Southern Yunnan–Tibet Geothermal Zone." Water 17, no. 10 (2025): 1481. https://doi.org/10.3390/w17101481.

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Abstract (sommario):

Hydrogeochemical characteristics and temperature variations in fault-controlled, deep-circulation thermal springs elucidate water–rock interaction dynamics and hydrothermal circulation depths, providing critical insights into fault permeability and stress accumulation. To investigate the coexistence of high-temperature and medium-low-temperature thermal springs on small-scale faults and their distinct circulation mechanisms, hydrochemical and isotopic analyses were conducted on 13 water samples (9 proximal on the Xiangbaihe Fault) in western Yunnan. The hot springs along the Xiangbaihe Fault a

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49

Pinault, J. L., H. Pauwels, and C. Cann. "Inverse modeling of the hydrological and the hydrochemical behavior of hydrosystems: Application to nitrate transport and denitrification." Water Resources Research 37, no. 8 (2001): 2179–90. http://dx.doi.org/10.1029/2001wr900017.

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50

Fashchevskaya, T. B., Yu G. Motovilov , and K. V. Kortunova. "Modeling the Genetic Components of the Water and Chemical Runoff of Heavy Metals in the Basin of the Nizhnekamskoe Reservoir." Водные ресурсы 50, no. 4 (2023): 492–508. http://dx.doi.org/10.31857/s0321059623040077.

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Abstract (sommario):

A semi-distributed physical-mathematical model ECOMAG-HM is used to simulate the genetic structure of water and chemical runoff of copper, zinc, and manganese in a large river basin of the Nizhnekamsk Reservoir. The model was tested against long-term data of hydrological and hydrochemical monitoring of water bodies. The contributions of the surface, soil, and subsoil components of the water and chemical runoff of metals are estimated for different segments of river network. It was found that, in the major portion of the catchment, river pollution by metals is mostly due to their diffuse washou

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