Review
Engineering, Environmental
Riki Sarma, Santosh Kumar Singh
Summary: The demand for clean and adequate water is increasing rapidly due to population growth, requiring simulation modeling to measure the quantity and quality of water. Integrated models are crucial for groundwater resources management as they provide a more accurate modeling approach than independent models. In recent decades, modeling of contaminant transport in groundwater systems has seen widespread applications.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Tuvia Turkeltaub, Xiaoxu Jia, Yuanjun Zhu, Ming-An Shao, Andrew Binley
Summary: This study investigated nitrate migration through the deep vadose zone using numerical models of different complexity, finding that accounting for vertical hydraulic conductivity decay improved water flow performances. It suggests that employing water flow and nitrate transport numerical models together with a simple representation of vertical loess variability is adequate for simulating nitrate migration in loess deep vadose zone environments.
WATER RESOURCES RESEARCH
(2021)
Article
Water Resources
Sanyuan Jiang, Wenbo Rao, Liangfeng Han, Karina T. Meredith
Summary: Understanding groundwater recharge mechanisms is crucial for sustainable groundwater resource assessment and management, especially in arid and semiarid areas. This study utilized chloride and stable isotopes to estimate groundwater recharge in the Ordos Plateau, northern China. The relationship between chloride concentrations in saturated zone water and soil water residence time was derived, providing insights into water flow and chloride transport. The study concluded that intense rainfall events were the main contributors to groundwater recharge, while small rainfall events only contributed to chloride flux on the soil surface.
HYDROLOGICAL PROCESSES
(2023)
Article
Environmental Sciences
Keith E. Schilling, Matthew T. Streeter
Summary: This study presents a paired water table monitoring approach to estimate the reduction of NO3-N loads from tile-drained croplands using saturated buffers. The results show that the saturated buffer can effectively increase the water table height and reduce the N concentration, resulting in a significant reduction in NO3-N loads.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Geosciences, Multidisciplinary
Baoqiang Ma, Tianming Huang, Jie Li, Zhenbin Li, Yin Long, Fen Zhang, Zhonghe Pang
Summary: Recent human activities have caused nitrate pollution in shallow groundwater, while deep groundwater mainly originates from soil nitrogen. Denitrification process is not evident in the unsaturated zone, indicating a minor impact on groundwater quality.
Article
Agricultural Engineering
Yufang Li, Mingsi Li, Hongguang Liu, Wenbao Qin
Summary: The study found that soil texture significantly affects drainage efficiency, with water moving quickly downwards in sandy soil, preventing it from entering the pipe, while water moves slower in loamy clay soil, allowing it to easily enter the pipe.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2021)
Article
Water Resources
Tomas Vitvar, Jakub Jankovec, Martin Sanda
Summary: In this study, a novel transferable modelling approach was used to investigate the subsurface flow processes and hydrological dynamics in a small mountainous catchment in Czech Republic. The combination of conceptual knowledge, numerical modelling, water balance computation, and isotope-supported calibration provided valuable insights into the interactions between hillslope, wetland, and aquifer. The study highlights the importance of comprehensive research in small catchments.
HYDROLOGICAL PROCESSES
(2022)
Article
Environmental Sciences
Patience Bosompemaa, Eric Wade Peterson, William Perry, Wondwosen M. Seyoum
Summary: This study found that plant uptake in a saturated riparian buffer helps reduce nitrate concentrations in both soil and soil pore water. Areas with plants had lower nitrate concentrations compared to areas without plants, indicating that plants are beneficial for nitrate absorption and reduction.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Sungjik Oh, Kyungjin Cho, Saerom Park, Man Jae Kwon, Jaeshik Chung, Seunghak Lee
Summary: This study investigates denitrification in vadose zones by conducting batch-type denitrification experiments and analyzing microbial community shifts. The results reveal that denitrification occurs under unsaturated soil conditions when the water saturation degree increases. High throughput sequencing shows that the same microbial species are potentially responsible for denitrification under varying water saturation conditions, suggesting a similar mechanism of denitrification in vadose zones.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Geological
Pratiksha Pandey, Kaine Lynch, Vinayagamoorthy Sivakumar, Brian Solan, Snehasis Tripathy, Satyajeet Nanda, Shane Donohue
Summary: This study aimed to develop a novel approach for measuring the saturated and unsaturated permeability of soils, using low-humidity air circulation through a slender sand column at the center of samples to generate suctions, and measuring suctions with two tensiometers located at the base of the samples.
Article
Chemistry, Organic
Tyll Freese, Peter G. Jones, Daniel B. Werz
Summary: A simple iterative strategy for synthesizing [7]helicenes from substituted 1,4-xylene building blocks is reported. The deprotonatable methyl groups are utilized to achieve ethano-bridged dimers in the first step, which are then oxidatively coupled without metal-containing catalysts or light using a hypervalent iodine reagent. Both steps are repeated to obtain the respective sigma/pi-helicenes, and the degree of saturation can be controlled thermally during the oxidative coupling.
Article
Engineering, Geological
Adrian R. Russell, Thanh Vo, Juan Ayala, Yanzhi Wang, David Reid, Andy B. Fourie
Summary: Laboratory-controlled cone penetration tests were conducted on two silty tailings samples in both saturated and unsaturated states. The results were interpreted using a state parameter-based approach. The study found that the cone penetration resistances can be normalized using the initial mean effective stress, establishing a relationship with the initial state parameter. These relationships are applicable to both saturated and unsaturated conditions, as long as suction hardening and the influence of suction on mean effective stress are taken into account. The state parameters can be back-calculated from the normalized cone penetration resistances, and they can be used to estimate the peak friction angles and liquefaction susceptibilities of the tailings.
Article
Environmental Sciences
Xianmin Ke, Wei Wang, Xiangdong Xu, Jinlong Li, Haiyang Hu
Summary: Seepage wells are important groundwater extraction structures that can help improve the imbalance between supply and demand, especially in areas of water scarcity. A newly developed saturated-unsaturated coupling model has shown promising results in estimating drawdown and pumping rates, suitable for rivers with different leakage capacities.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Chemistry, Physical
Ibon Alkorta, Anthony Legon
Summary: In this study, the nucleophilicities of methane, ethane, cyclopropane, ethyne, and ethene acting as Lewis bases were determined through experimental and computational methods. The inductive effect of the methyl group when ethyne is methylated was also investigated.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Environmental Sciences
Janith Chandrasoma, Reid Christianson, Richard Andrew Cooke, Paul C. Davidson, DoKyoung Lee, Laura Christianson
Summary: This study monitored drainage flow, nitrate, and dissolved reactive phosphorus at three saturated buffers in Illinois, USA. It found inherent uncertainty in the design process and inconsistency in bypassing flow rates despite similar nitrate removals, highlighting a need for further evaluation of design models for edge-of-field practices.
JOURNAL OF ENVIRONMENTAL QUALITY
(2022)
Article
Food Science & Technology
Anne Louise Gimsing, Jutta Agert, Nicole Baran, Arnaud Boivin, Federico Ferrari, Richard Gibson, Lisa Hammond, Florian Hegler, Russell L. Jones, Wolfram Koenig, Jenny Kreuger, Ton van der Linden, Dirk Liss, Ludovic Loiseau, Andy Massey, Benedict Miles, Laurent Monrozies, Andy Newcombe, Anton Poot, Graham L. Reeves, Stefan Reichenberger, Annette E. Rosenbom, Horst Staudenmaier, Robin Sur, Andreas Schwen, Michael Stemmer, Wiebke Tueting, Uta Ulrich
JOURNAL OF CONSUMER PROTECTION AND FOOD SAFETY
(2019)
Article
Ecology
Celine Gaullier, Nicole Baran, Sylvie Dousset, Nicolas Devau, David Billet, Geraldine Kitzinger, Emeline Coisy
ECOLOGICAL ENGINEERING
(2019)
Article
Environmental Sciences
Pauline Sidoli, Nicolas Devau, Rafael Angulo Jaramillo, Nicole Baran
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Chemistry, Inorganic & Nuclear
Laurence Gourcy, Nicole Baran, Luc Arnaud
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2020)
Article
Environmental Sciences
Celine Gaullier, Sylvie Dousset, Nicole Baran, Geraldine Kitzinger, Charlotte Coureau
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Engineering, Civil
Nicolas Surdyk, Alexis Gutierrez, Nicole Baran, Dominique Thiery
Summary: Groundwater nitrate contamination requires measures to reduce agricultural impacts. Models, especially lumped models like BICHE, can be useful for understanding nitrate transfer trends and forecasting, showing good performance in long-term trend analysis.
JOURNAL OF HYDROLOGY
(2021)
Article
Microbiology
Caroline Michel, Nicole Baran, Laurent Andre, Mickael Charron, Catherine Joulian
Summary: The study showed that the metabolite ESA-metolachlor had a significant inhibitory effect on denitrification, while propiconazole and 1,2,4-triazole had a smaller impact. Pesticides affected the nitrate reduction process but did not significantly alter the abundance of nitrate reductase genes. Overall, pesticides and metabolites at environmental concentrations can have side effects on microbial denitrification and potentially impact ecosystem services.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Emmanuelle Petelet-Giraud, Nicole Baran, Virginie Vergnaud-Ayraud, Angelie Portal, Caroline Michel, Catherine Joulian, Flora Lucassou
Summary: Nitrate contamination of groundwater is a major concern despite efforts to protect water resources. Research in a Brittany catchment revealed heterogeneous nitrate concentrations influenced by geological structures and weathering layers. A combined approach of geology, geochemistry, isotopic methods, microbiology, geophysics, and hydrogeology is crucial for effective measures and assessing their impact on groundwater quality.
JOURNAL OF CONTAMINANT HYDROLOGY
(2021)
Article
Engineering, Environmental
Clara Torrento, Violaine Ponsin, Christina Lihl, Thomas B. Hofstetter, Nicole Baran, Martin Elsner, Daniel Hunkeler
Summary: Although multielement isotope fractionation studies have been well-established for point-source pollution, they are only emerging for diffuse pollution by micropollutants like pesticides. This study found that chlorine isotope fractionation can be a robust indicator of chloroacetanilide degradation, with distinct patterns observed for different degradation pathways. The 3D isotope approach allows for differentiation of transformations that may not be distinguishable based on C and N isotope data alone.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Nicole Baran, Nicolas Surdyk, Chrystelle Auterives
Summary: The study evaluated temporal trends of pesticide contaminants in French groundwater to identify key factors causing groundwater pollution. It found that the frequency of pesticide residues in groundwater is significantly influenced by the sales volume of active substances and effective rainfall.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Luc Arnaud, Alexis Gutierrez, Ines Zegoulli, Nyankona Gonomy
Summary: A groundwater model was developed to assist in the sustainable management of water resources in the Plaine du Nord-Massacre aquifer system. The model showed the potential for significant water resources in the region, but suggested that deeper irrigation wells would be needed to support agricultural development.
HYDROGEOLOGY JOURNAL
(2022)
Article
Environmental Sciences
Noemie Neverre, Nicolas Surdyk, Cecile Herivaux, Nicole Baran
Summary: Preserving or restoring the quality of groundwater resources in terms of nitrate is a challenging task. However, there is a lack of useful and easily applicable tools to identify the best measures to implement at the local level. In this study, an innovative methodology combining a model simulating nitrate groundwater contamination time series and economic evaluation was used to identify cost-effective restoration measures at a drinking water catchment scale. The study was conducted in a representative catchment in Northwest France that has been affected by nitrate contamination for several decades. The results show that significant changes in cropping patterns are needed to achieve the long-term goal of restoring groundwater quality targets.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Nicole Baran, Annette Elisabeth Rosenbom, Ronald Kozel, Dan Lapworth
Summary: Pesticides pose a serious threat to groundwater quality and ecosystems, and monitoring strategies and data reporting vary across Europe, making assessment challenging.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
H. Jourde, N. Massei, N. Mazzilli, S. Binet, C. Batiot-Guilhe, D. Labat, M. Steinmann, V Bailly-Comte, J. L. Seidel, B. Arfib, J. B. Charlier, V Guinot, A. Jardani, M. Fournier, M. Aliouache, M. Babic, C. Bertrand, P. Brunet, J. F. Boyer, J. P. Bricquet, T. Camboulive, S. D. Carriere, H. Celle-Jeanton, K. Chalikakis, N. Chen, C. Cholet, V Clauzon, L. Dal Soglio, C. Danquigny, C. Defargue, S. Denimal, C. Emblanch, F. Hernandez, M. Gillon, A. Gutierrez, L. Hidalgo Sanchez, M. Hery, N. Houillon, A. Johannet, J. Jouves, N. Jozja, B. Ladouche, V Leonardi, G. Lorette, C. Loup, P. Marchand, V De Montety, R. Muller, C. Olivier, V Sivelle, R. Lastennet, N. Lecoq, J. C. Marechal, L. Perotin, J. Perrin, M. A. Petre, N. Peyraube, S. Pistre, V Plagnes, A. Probst, J. L. Probst, R. Simler, V Stefani, D. Valdes-Lao, S. Viseur, X. Wang
VADOSE ZONE JOURNAL
(2018)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)