Article
Geosciences, Multidisciplinary
Giorgio Pilla, Patrizio Torrese
Summary: This study presents an integrated hydrochemical and geophysical investigation of saline paleo-water uprising in the alluvial aquifer of the Oltrepo Pavese plain sector in northern Italy. The distribution of saline waters is mainly influenced by a buried tectonic discontinuity, with contamination being non-uniform within the aquifer. Highly mineralized plumes of water mix with freshwaters and dilute during upward migration. Sectors further away from structural discontinuities show a lower degree of contamination, mainly affecting the deeper parts of the aquifer.
HYDROGEOLOGY JOURNAL
(2022)
Article
Geochemistry & Geophysics
Sarwar Nizam, Subham Dutta, Indra S. Sen
Summary: The Indo-Gangetic Basin alluvial aquifer system, which provides drinking water to over half a billion people, has been the focus of numerous studies to understand its groundwater quality and storage. However, the factors influencing uranium variability in this system have been under-explored. This study found that uranium enrichment primarily comes from geogenic sources and its mobility is controlled by alkalinity. The researchers emphasize the need for further assessment of groundwater uranium concentrations due to its adverse health effects, similar to other geogenic contaminants such as arsenic and fluoride.
APPLIED GEOCHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Sarwar Nizam, Subham Dutta, Indra S. Sen
Summary: The Indo-Gangetic Basin alluvial aquifer system provides drinking water for a large population and studies show that uranium concentration in the groundwater may exceed WHO guideline values, primarily derived from geogenic sources and controlled by alkalinity. More monitoring is needed to control environmental and health risks associated with high levels of uranium.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Rudra Mohan Pradhan, Ajit Kumar Behera, Sudhir Kumar, Pankaj Kumar, Tapas Kumar Biswal
Summary: This study investigates the groundwater recharge processes and geochemical evolution in the fractured basement terranes of Gujarat, NW India using integrated environmental isotopes and hydrogeochemical studies. The results show that the groundwater chemistry is influenced by the chemical weathering of silicate minerals, and local precipitation is the main source of recharge. The findings of this study are important for designing sustainable water budgets and water management plans.
Article
Engineering, Environmental
Xiaodong Chu, Hao Wang, Liangzhong Li, Zhifei Ma, Daishe Wu, Ting Chen
Summary: The hydrochemical characteristics of shallow groundwater in the Poyang Lake Plain were analyzed, revealing the main factors affecting groundwater quality. The study provides important information for controlling groundwater and surface water pollution in the region.
Article
Engineering, Environmental
Mohanavelu Senthilkumar, Devadasan Gnanasundar
Summary: Groundwater samples from the northern coastal aquifer in Tamilnadu were analyzed to study the hydrochemical variations during pre and post monsoon periods. Different ratios of bromide and chloride ions were found in groundwater from different locations, indicating the presence of saline water remnants and freshwater-saline water interface movement in the aquifer.
GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Environmental Sciences
Jordan A. Iles, Neil E. Pettit, Michael J. Donn, Pauline F. Grierson
Summary: This study investigated the influence of dissolved organic matter (DOM) additions on the phosphate sorption kinetics of iron-rich sediments. The results showed that low-dose DOM addition reduced sediment P adsorption capacity, while high-dose DOM addition increased it. The study also revealed that phosphorus availability in dryland streams can be modulated by varying the concentration of humic-rich DOM.
Article
Ecology
Jordan A. Iles, Neil E. Pettit, Greg Cawthray, Pauline F. Grierson
Summary: This study investigates the effects of nutrient limitation on periphyton communities in freshwater streams. Results show that nitrogen and phosphorus are co-limiting factors for periphyton production and community structure. Nitrogen addition shifts the community from diatom-dominated to chlorophyte-dominated, benefiting cyanophyta growth. Phosphorus addition reduces diatoms and leads to cell lysis. The study highlights the importance of nutrient balance in freshwater ecosystems and the potential impacts on food webs.
FRESHWATER BIOLOGY
(2022)
Article
Geography, Physical
Szymon Uscinowicz, Witold Cieslikiewicz, Grzegorz Skrzypek, Aleksandra Zgrundo, Tomasz Goslar, Mariusz-Orion Jedrysek, Leszek Jurys, Dorota Koszka-Maro, Grazyna Miotk-Szpiganowicz, Powel Sydor, Joanna Zachowicz
Summary: The study of the coastal peatlands in the Vistula Lagoon provides valuable insights into the regional sea-level and storminess changes during the middle and late Holocene. The analysis of peat and gyttja revealed the sea-level rise from 20 to 8 meters below present sea level between 9000 and 7000 years ago at an average rate of 6 mm/year. The rate of sea-level rise decreased to 2.75 mm/year between 7000 and 5000 years ago, with the sea-level being 2.5 meters lower than present around 5000 years ago. In the last 5000 years, the sea-level has risen at a rate of 0.5 mm/year to its current position. The study also identified ten periods of increased sea-level rise and storminess between 7000 and 1500 years ago, which were mainly associated with cold periods or transitions and linked to variations in regional solar irradiation.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Multidisciplinary Sciences
Maciej P. Lewicki, Dominika Lewicka-Szczebak, Grzegorz Skrzypek
Summary: FRAME is a software tool for stable isotope fractionation and mixing evaluation, which allows simultaneous partitioning of sources and determination of fractionation progress. It applies a Markov-Chain Monte Carlo model and provides probability distributions of the calculated results.
Review
Oceanography
Julie A. Trotter, Marco Taviani, Federica Foglini, Aleksey Sadekov, Grzegorz Skrzypek, Claudio Mazzoli, Alessandro Remia, Nadia Santodomingo, Giorgio Castellan, Malcolm McCulloch, Charitha Pattiaratchi, Paolo Montagna
Summary: This study presents the first deep-sea remotely operated vehicle exploration of previously unexplored submarine canyon systems along the southwest Australian continental margin. The study provides new information about these canyons, their unique characteristics, and the diverse ecosystems found within them.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Biology
Caroline C. C. Mather, Heta M. M. Lampinen, Maurice Tucker, Matthias Leopold, Shawan Dogramaci, Mark Raven, Robert J. J. Gilkes
Summary: Microbial extracellular polymeric substances (EPS) and certain clay minerals can catalyze dolomite precipitation. This study found that EPS acts as a nucleation site for dolomite and clay minerals in groundwater dolocrete profiles, suggesting that similar mineralization processes may have occurred to form these dolocretes. These findings are important for understanding the microbial influence on mineralization in the environment.
Article
Water Resources
Grzegorz Skrzypek, Adrian Siller, James L. McCallum, Shawan Dogramaci
Summary: This study investigates the contribution of an internally drained basin to localised groundwater recharge in a semiarid region of northern Western Australia. The researchers developed a new model combining various tracer methods to estimate localised infiltration. The results showed significant variations in recharge across the basin, with flood plains overlying freshwater aquifers contributing more to localised recharge than the upper parts of the catchments.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Fisheries
Brendon James Osorio, Grzegorz Skrzypek, Mark Meekan
Summary: Understanding the diet of whale sharks is crucial for conservation strategies, and this study suggests that parasitic copepods can be used as a proxy to infer the short-term foraging habitats and trophic positions of whale shark hosts. The study found a strong correlation between the nitrogen isotope compositions of the parasites and whale shark hosts, indicating consistent trophic positions over time. However, the carbon isotope compositions showed a weak correlation, suggesting differences in physiology and lifecycle between the copepod parasite and the host.
Article
Environmental Sciences
David Saka, Joseph Adu-Gyamfi, Grzegorz Skrzypek, Eric Ofosu Antwi, Lee Heng, Juan Antonio Torres-Martinez
Summary: Fertilizers are beneficial for agriculture but can lead to water pollution. This study in Ghana's Densu River Basin used hydrochemical and multi-isotope data to identify nitrate pollution sources and processes. The findings showed that nitrification was the main process upstream, while mixing of sources and denitrification dominated downstream. The study also revealed that N fertilizers and soil N were the main nitrate sources upstream, while manure/sewage became dominant downstream reflecting different land use. Soil erosion and runoff were found to contribute to nitrate pollution as much as N fertilizers, and manure/sewage impacted groundwater. Multi-isotope analysis provided additional insights not possible with traditional methods.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Civil
Allen June Buenavista, Chuan Wang, Yueqing Xie, Benjamin Gilfredder, Sven Frei, Pere Masque, Grzegorz Skrzypek, Shawan Dogramaci, James L. McCallum
Summary: Quantifying water flux between surface water and groundwater is crucial for water balance determination, surface water quality control, and sustainable allocation of water resources. By analyzing variations in 222Rn activity in sediments, water flow and residence times can be inferred. This study emphasizes the importance of accounting for upward flows in predicting groundwater exchange with surface water bodies.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Lamine Boumaiza, Romain Chesnaux, Tarek Drias, Randy L. Stotler, Grzegorz Skrzypek, Marina Gillon, Heike Wanke, Karen H. Johannesson, Christine Stumpp
Summary: Groundwater recharge is crucial for sustainable water resource management. This study investigates the effect of seasonal soil sampling on the estimation of groundwater recharge and finds that the sampling time does not influence the recharge estimate in a semiarid environment.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Bronwen L. Konecky, Nicholas P. McKay, Georgina M. Falster, Samantha L. Stevenson, Matt J. Fischer, Alyssa R. Atwood, Diane M. Thompson, Matthew D. Jones, Jonathan J. Tyler, Kristine L. DeLong, Belen Martrat, Elizabeth K. Thomas, Jessica L. Conroy, Sylvia G. Dee, Lukas Jonkers, Olga V. Churakova (Sidorova), Zoltan Kern, Thomas Opel, Trevor J. Porter, Hussein R. Sayani, Grzegorz Skrzypek
Summary: This study evaluates global hydroclimate during the past 2,000 years and demonstrates that global mean surface temperature exerts a coherent influence on global precipitation and atmospheric circulation, with the Pacific Walker Circulation being a predominant source of regional variability.
Article
Biochemical Research Methods
Philip J. H. Dunn, Grzegorz Skrzypek
Summary: Measurements of stable-isotope composition can be biased due to differences in laboratories or changes over time within a laboratory. To ensure traceability and comparability, clear method protocols and reporting guidelines are important. Therefore, authors and reviewers should adhere to IUPAC guidelines when preparing and reviewing publications.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2023)
Article
Multidisciplinary Sciences
Cihat Adsiz, Grzegorz Skrzypek, James Mccallum
Summary: Accurate estimation of evaporative losses from a water body requires knowledge of the stable isotope composition of ambient air moisture. In this study, we conducted outdoor pan evaporation experiments and measured the stable isotope composition of ambient moisture at three different heights to calculate evaporative losses and assess measurement uncertainty.
Article
Geosciences, Multidisciplinary
Sarah A. Bourke, Margaret Shanafield, Paul Hedley, Sarah Chapman, Shawan Dogramaci
Summary: Persistent surface water pools along non-perennial rivers are essential water resources for plants, animals, and humans. This study presents a comprehensive framework for understanding the hydrology of these pools, including the key hydraulic mechanisms that control their persistence. Throughflow of alluvial water and groundwater discharge are identified as the main mechanisms, and various diagnostic tools are summarized and critiqued for their application in studying these hydraulic processes. The framework allows for assessing the vulnerability of river pools to climate change and groundwater extraction.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(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)