Article
Environmental Sciences
Esther Lee, Joshua M. Epstein, Matthew J. Cohen
Summary: Depressional wetlands play a crucial role in wetland landscapes by storing and releasing water, providing habitat, and influencing carbon and nutrient cycling. The frequency and importance of surface connectivity in these wetlands is poorly understood, but our research shows that it is vital for the export of water-borne materials and numerous hydrologic and habitat services. Understanding and quantifying this surface connectivity is essential for evaluating the restoration of wetland landscape functions.
WATER RESOURCES RESEARCH
(2023)
Article
Water Resources
Raymond D. Craddock, Gavin W. Kennedy, Rob C. Jamieson, Jonathan Keizer, Aaron A. Mohammed, Barret L. Kurylyk
Summary: This study focuses on understanding the pathways of groundwater flow and associated solute transport to the ocean in Mabou Harbour, Nova Scotia, Canada. The results show that seaward stream baseflow exceeds direct submarine groundwater discharge (SGD) in this till dominated coastal aquifer. The majority of SGD originates in the subcatchment surrounding the harbour, indicating limited intermediate or regional flow. The shorter flow paths and residence times for direct SGD may have implications for groundwater contamination in this harbour.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Engineering, Civil
Qinpeng Chang, Tianyuan Zheng, Chenchen Gao, Xilai Zheng, Marc Walther
Summary: Cutoff walls have been widely used to control seawater intrusion in coastal regions. However, the impact of cutoff walls on downstream groundwater deterioration in coastal aquifers has not been clarified. This study used indoor experiments and numerical simulations to investigate the downstream saltwater behaviors considering the construction of cutoff walls. The results showed that cutoff walls could affect the salt distribution, freshwater discharge, and groundwater quality in the downstream area. Factors such as wall opening size, wall distance to the sea, hydraulic gradient, and dispersivity all influenced the salt distribution and freshwater discharge. Cutoff walls are not suitable for coastal aquifers with low hydraulic gradient, but a cutoff wall closer to the sea can minimize groundwater salinization without increasing construction cost.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Xiaolong Geng, Holly A. Michael
Summary: The study highlights the significant role of three-dimensional groundwater movement in heterogeneous coastal aquifers, especially in systems with connected high-permeability geological features. Three-dimensional flowpaths and travel times are longer compared to two-dimensional in onshore areas, but shorter offshore, particularly in conduit-type models with highly preferential flow. Flowpath lengths and travel times vary greatly in three-dimensional simulations compared to two-dimensional across all heterogeneous systems.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Filomena Canora, Rosalba Muzzillo, Francesco Sdao
Summary: This study conducted a groundwater vulnerability assessment of the Metaponto coastal plain in southern Italy using the GIS-based application of the SINTACS method. The results showed that the southeastern part of the coastal plain was the most vulnerable to contamination, while the central part had a moderate vulnerability, and the northern part had a low vulnerability.
Article
Environmental Sciences
Wenhao Wei, Athena Nghiem, Rui Ma, Ziyong Sun, Xulong Gong, Aiguo Zhou, Henning Prommer
Summary: The study found significant variation in iodine concentrations in groundwater in Northern Jiangsu, with high levels mainly found in marine plains and flood sediments of the Old Yellow River. Marine or lagoonsfacies sediments were identified as the most likely source of iodine, while the flood sediments of the Old Yellow River were deemed unlikely as a source.
JOURNAL OF CONTAMINANT HYDROLOGY
(2021)
Article
Green & Sustainable Science & Technology
Wahib Al-Qubatee, Henny A. J. Van Lanen, Ghunaim Nasher, Henk Ritzema, Petra Hellegers
Summary: This study presents a simple water budget model to analyze groundwater depletion in Wadi Zabid, Yemen. The findings indicate that the unsustainable groundwater use in the region is mainly caused by the expansion of agricultural lands. Scenario analysis suggests that reducing agricultural lands and increasing surface water inflow can help reduce groundwater depletion.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Environmental Sciences
Xuan Yu, Holly A. Michael
Summary: Numerical models of variable-density groundwater flow and salt transport are crucial for predicting salinity distributions in coastal aquifers and estimating submarine groundwater discharge. The study found that the scale of representation of heterogeneity significantly impacts salinity distributions and flow paths, and simulated density distributions control both the rate and direction of subsurface saltwater circulation.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Tybaud Goyetche, Linda Luquot, Jesus Carrera, Laura Martinez-Perez, Albert Folch
Summary: In coastal aquifers, seawater intrusion and submarine groundwater discharge are two opposing processes that require characterization and quantification to assess the quality and composition of the water. This study proposes a methodology using principal component analysis to identify water sources and reactions, and quantify mixing ratios and the extent of chemical reactions. The research highlights the importance of cation exchange and its impact on other reactions, as well as the spatial distribution of reactions in the aquifer.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Civil
Miriam Toro, Thomas Ptak, Gudrun Massmann, Juergen SultenfuB, Manon Janssen
Summary: This study aims to understand the hydrological system in a rewetted coastal fen typical for the southern Baltic Sea. By installing groundwater observation wells, the researchers conclude that rewetting primarily affects the groundwater in the upper peat layer, with little impact on the underlying aquifer.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Yuxuan Hou, Jie Yang, Christopher J. Russoniello, Tianyuan Zheng, Mei-lin Wu, Xuan Yu
Summary: Shrimp aquaculture can lead to groundwater salinization and increased submarine groundwater discharge (SGD), but research on this topic is limited. In this study, a numerical simulation approach was used to assess the impacts of shrimp farm irrigation on groundwater salinization and SGD. The results showed that pond water depth had a primary control on the mass of saltwater infiltration, while farm width had a primary control on recovery rate. Both pond water salinity and depth affected fresh and saline SGD. This study highlights the previously unrecognized mechanism of aquaculture on coastal aquifer vulnerability and SGD, emphasizing the need for further research on the impact of aquaculture on coastal groundwater resources.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Environmental
Fule Zhang, Jinlong Wang, Dekun Huang, Qiangqiang Zhong, Tao Yu, Jinzhou Du
Summary: The study explores the presence of Sr-90 in coastal groundwater, river water, pore water, and seawater in three bays along the southeastern coast of China. It suggests that submarine groundwater discharge (SGD) is a significant source of coastal Sr-90 and should be considered in coastal management, particularly in areas with nuclear facilities.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Kai Xiao, Peng Zhang, Isaac R. Santos, Jun-Jian Wang, Zhenyang Li, Xuejing Wang, Ying-Hui Wang, Meiqing Lu, Licong Zhang, Hailong Li
Summary: Dissolved organic matter (DOM) in highly productive intertidal mangroves plays a significant role as a carbon and nutrient source in the coastal ocean. The influence of groundwater flow on DOM properties and fluxes remains poorly understood. This study highlights the importance of tidal hydrology in controlling groundwater DOM characteristics.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Environmental
K. H. Cheng, Xin Luo, Jiu Jimmy Jiao, Shengchao Yu
Summary: Storm events can stimulate the growth of subsurface E. coli and accelerate their exports into coastal waters. The findings are important for preventing coastal water pollution and managing coastal safety during extreme weather events.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Geosciences, Multidisciplinary
Yi Liu, Yurong Song, Jiu Jimmy Jiao
Summary: Coastal ocean acidification is a global problem due to climate change, and the study reveals a close relationship between submarine groundwater discharge (SGD) and coastal ocean acidification in Hong Kong's coastal waters. The direct influence of SGD on seawater pH decline is evaluated for the first time, and the results show that SGD contributes significantly to seawater pH variation through direct input of carbonate species. In addition, SGD also affects seawater pH through nutrient loadings. Understanding and managing groundwater is crucial in mitigating coastal ocean acidification.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Computer Science, Interdisciplinary Applications
Aparna Harichandran, Benny Raphael, Abhijit Mukherjee
Summary: This study proposes a framework called hybrid unsupervised and supervised machine learning (HUS-ML) for equipment activity recognition and fault detection. The framework identifies normal operations and known faulty conditions through supervised learning, and utilizes an anomaly detection algorithm to spot unseen faulty conditions. Experimental results demonstrate the superiority of HUS-ML in activity recognition and fault detection, with successful identification of known and unseen faulty operations.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Environmental Sciences
Hawzhin Zarinmehr, A. Taheri Tizro, Alan E. Fryar, M. Khodamorad Pour, Rojin Fasihi
Summary: This study investigated the temporal changes of groundwater levels and applied various parametric time-series models to the data. The PROPHET model showed the best performance in predicting the declining trend of groundwater levels in the Lake Urmia basin.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Madhumita Chakraborty, Abhijit Mukherjee, Kazi Matin Ahmed, Alan E. Fryar, Animesh Bhattacharya, Anwar Zahid, Raja Das, Siddhartha Chattopadhyay
Summary: This study developed a high-resolution, regional-scale hydrostratigraphic model of the Ganges River delta and analyzed the distribution patterns of arsenic (As) as a function of the hydrostratigraphy. The results revealed that the hydrostratigraphy is spatially variable and can be divided into three distinct aquifer subsystems. The spatial distribution of As differs in each subsystem, and the aquitards in the subsystems act as natural barriers to the infiltration of As to deeper aquifer zones.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Construction & Building Technology
Abhijit Mistri, Navdeep Dhami, Sriman Kumar Bhattacharyya, Sudhirkumar Barai, Abhijit Mukherjee
Summary: Reutilising construction and demolition waste as aggregate in concrete is sustainable and prevents depletion of natural resources. Bio-treatment of recycled coarse aggregate has been shown to improve the drawbacks caused by attached mortar, and is more cost-effective than conventional cement slurry treatment.
MATERIALS AND STRUCTURES
(2022)
Article
Chemistry, Inorganic & Nuclear
Elizabeth Avery, Olena Samonina, Lidiia Kryshtop, Iryna Vyshenska, Alan E. Fryar, Andrea M. Erhardt
Summary: North-central Ukraine is vulnerable to climate change impacts, including temperature increases and precipitation pattern changes. Analysis of oxygen and hydrogen isotope ratios in precipitation provides valuable information on water sources and moisture recycling in the region. The study found a correlation between precipitation patterns and temperature, suggesting that rising temperatures may affect rainfall. The research also identified relationships between water isotope ratios, storm paths, and moisture recycling, improving precipitation forecasts in Ukraine.
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2022)
Article
Construction & Building Technology
Yikuan Wang, Abhijit Mukherjee, Arnaud Castel
Summary: This paper proposes a combined electrochemical and ultrasonic method for monitoring incipient corrosion in reinforced concrete (RC), and experimental corrosion was induced by accelerated chloride. Through the use of four monitoring techniques and the analysis of results, the progression of corrosion and concrete cracking can be successfully identified and traced.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Environmental Sciences
Poulomee Coomar, Kousik Das, Palash Debnath, Swati Verma, Prerona Das, Ashis Biswas, Abhijit Mukherjee
Summary: This study investigates the role of submarine groundwater discharge in transporting arsenic from the Ganges river delta to the Bay of Bengal. The results reveal the presence of a plume carrying up to 30 μg/L of dissolved arsenic towards the sea. Arsenic distribution and transport are controlled by the Fe-Mn redox cycle and influenced by terrestrial groundwater discharge.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Soumyajit Sarkar, Abhijit Mukherjee, Madhumita Chakraborty, Md Tahseen Quamar, Srimanti Duttagupta, Animesh Bhattacharya
Summary: Elevated fluoride in groundwater is a serious problem in India, affecting the health of a large population that relies on groundwater. This study explores the relationship between tectonics and fluoride distribution in groundwater using machine learning models. The random forest model is found to be the most accurate, and two high-risk areas are identified.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Editorial Material
Engineering, Environmental
Abhijit Mukherjee, Sachchida Nand Tripathi, Kirpa Ram, Dipankar Saha
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Shishir K. Sarker, Junfeng Zhu, Alan E. Fryar, Ghulam Jeelani
Summary: Karst springs in the Liddar catchment in northern India were studied to understand their responses to hydrometeorological factors and predict future changes. Statistical time series analysis revealed a moderate karstification and high storage capacity of the karst aquifer, with a memory effect of 43 to 61 days. The machine learning analysis showed that support vector regression outperformed random forest regression in predicting the spring flow, which was found to be more influenced by snow/ice melt than rainfall. The predictions based on climate scenarios indicated an increase in spring flow during late winter to early spring and a decrease in summer and autumn, with further reductions in flow due to increased greenhouse gas emissions.
Article
Water Resources
Ryan T. Dapkus, Alan E. Fryar, Benjamin W. Tobin, Diana M. Byrne, Shishir K. Sarker, Leonie Bettel, James F. Fox
Summary: This study examined the utility of continuous monitoring of tryptophan-like fluorescence (TLF) as a real-time proxy for E. coli in a karst aquifer. The results showed a positive correlation between TLF and E. coli, but considering the cost and performance, alternative factors such as precipitation, turbidity, and air temperature may be more cost-effective predictors.
Editorial Material
Environmental Sciences
Abhijit Mukherjee, Soumendra N. Bhanja, Matthew Rodell, Yoshihide Wada, Prangaditya Malakar, Dipankar Saha, Alan M. MacDonald
Article
Construction & Building Technology
Yikuan Wang, Abhijit Mukherjee, Arnaud Castel
Summary: This study proposes a non-destructive method based on guided ultrasonic waves to monitor corrosion in reinforced concrete with top-bar defect. Through accelerated corrosion experiments and monitoring with guided ultrasonics, the research reveals that top-bar defect significantly influences the corrosion process, and specimens with defects have a significant loss of strength after corrosion exposure.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Geosciences, Multidisciplinary
Chen Zhu, Alan E. Fryar, John Apps
Summary: Research in hydrogeochemistry has made significant progress in the past two decades, including arsenic contamination in groundwater, the use of isotopic and chemical tracers, chemical reaction kinetics, and the transformation of geochemical modeling. In the future, advancements in technology such as machine learning, cyberinfrastructure, and isotope analytical tools will enable breakthrough research and enhance the role of hydrogeochemistry in addressing climate change and the transition to renewable energies.
Article
Construction & Building Technology
Nimrat Pal Kaur, Yikuan Wang, Navdeep Kaur Dhami, Abhijit Mukherjee
Summary: Bacterial biocementation has the ability to heal cracks in concrete, but there is a concern about the potential corrosion caused by the materials used. This paper examines the performance of bacterially healed reinforced concrete when exposed to chloride-induced corrosion. Different calcium sources were used for the healing process, and electrochemical techniques and ultrasonic-guided waves were used to assess the state of corrosion. The study found that the presence of electrolytes in the healing fluid affected the electrochemical measurements and gave misleading results, but the ultrasonic-guided waves method provided an accurate assessment of corrosion.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
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)