Article
Engineering, Civil
Daniel Partington, Margaret Shanafield, Eddie W. Banks, Martin S. Andersen, Gabriel C. Rau, Stefan Felder, Craig T. Simmons
Summary: Ephemeral and intermittent flow in dryland streams are essential for supporting ecosystems and recharging groundwater. This study used a laboratory flume filled with fine sand to simulate event flows along a dry stream and combined it with numerical simulations to understand the physical processes involved. The study found that hydraulic conductivity significantly influences surface infiltration and the advancement of the stream wetting front, and emphasized the importance of streambed heterogeneity and elevation in determining downstream flow progression.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
James K. Adamson, Wm Javan Miner, Pierre-Yves Rochat, Emmanuel Moliere, Michael Piasecki, G. Thomas LaVanchy, Sergio Perez-Monforte, Maria Rodriquez-Vera
Summary: Mountain block recharge is an important component of the water budget for alluvial aquifers, but understanding and quantifying its dynamics is challenging. This study investigates two alluvial aquifers in Haiti and finds that river infiltration from the mountain block is a major source of recharge. The study also highlights the significance of the Massif de la Selle carbonate aquifer system, which has a much larger recharge than the alluvial aquifers and supplies a significant portion of the water to the metropolitan area of Port-au-Prince.
HYDROGEOLOGY JOURNAL
(2022)
Article
Engineering, Civil
Naga Venkata Satish Laveti, Ashes Banerjee, Suresh A. Kartha, Subashisa Dutta
Summary: The increased accessibility of groundwater in the alluvial plains of the Kosi river basin has altered the crop calendar and irrigation response of farmers, especially in dry years after 2004. A study developed a framework to analyze the spatio-temporal variation in groundwater recharge/extraction patterns and river-aquifer flux exchange due to increasing anthropogenic activities, finding an increasing trend of river to aquifer flux transfer which may have disturbing long-term effects on river flow and stage.
JOURNAL OF HYDROLOGY
(2021)
Review
Green & Sustainable Science & Technology
Giacomo Medici, Jeff B. Langman
Summary: Aquifer recharge is crucial for understanding groundwater volumes and sustainable use of natural water resources. This study evaluated various methods to determine recharge in a flood basalt terrain, revealing the influence of snowmelt on recharge. By combining groundwater modeling and hydrologic tracers, the appropriate recharge values were determined for different terrains.
Article
Environmental Sciences
Shun Hu, Rui Ma, Ziyong Sun, Mengyan Ge, Linglin Zeng, Feng Huang, Jianwei Bu, Zheng Wang
Summary: The overexploitation of water resources in northwestern China has led to severe ecological degradation and desertification in some arid inland river basins. Ecological water conveyance (EWC) has been identified as an important and effective measure to alleviate or restore the degraded vegetation ecosystem. This study used long time series normalized difference vegetation index (NDVI) to extract restored vegetation areas and determine optimal ecological water conveyance volume (EWCV) based on the relationship between vegetation coverage and EWC.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Zhiyong Huang, Pat J. -F. Yeh, Jiu Jimmy Jiao, Xin Luo, Yun Pan, Yuannan Long, Chong Zhang, Longqun Zheng
Summary: A new approach combining GRACE satellite data and baseflow was proposed to estimate groundwater recharge at large spatial scales. This method was applied in two karst basins in southwest China, showing the influence of karstification and aquifer water table depth on recharge and discharge processes.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Saheed Adeyinka Oke, Rebecca Alowo
Summary: This paper presents a spatial interpolation of hydrological and socioeconomic processes impacting groundwater systems in the Modder river catchment of South Africa. The results show that Modder River groundwater sustainability ranges between low and moderate sustainability. The findings will assist groundwater managers and users in planning groundwater resources effectively, especially in terms of licensing and over pumping.
Article
Engineering, Civil
Zhilin Guo, Kewei Chen, Shuping Yi, Chunmiao Zheng
Summary: This study developed a flow and multi-component reactive transport model to evaluate the impact of managed aquifer recharge (MAR) on groundwater quality and geochemical processes. The results showed that groundwater geochemistry can be significantly altered during MAR, with nitrate dilution being the main process responsible for observed changes in groundwater quality. Regular monitoring and reactive transport modeling analysis are recommended to minimize the adverse impact of MAR operations on groundwater quality.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Bisrat Elias Cholo, Jiregna Gidisu Tolossa
Summary: It has been found that stable water isotopes can indicate the sources of groundwater recharge. The composition of d18O and d2H reflects the mixture of water at the surface and the origin of moisture during precipitation and infiltration. Therefore, understanding the spatial variability in groundwater recharge and flow paths is crucial for effective aquifer management. This study uses stable water isotopes (d18O and d2H) and groundwater level measurements to investigate groundwater recharge sources and flow paths in the Bilate River watershed, Ethiopia. The isotopic ranges in groundwater samples are more similar to precipitation than river water. The analysis shows that local rainfall is the dominant recharge source for the groundwater. However, there is high enrichment of groundwater isotopes in the northeast and east of the watershed, indicating a mixture of groundwater and surface water due to lake water intrusion.
HYDROGEOLOGY JOURNAL
(2023)
Article
Environmental Sciences
Christian Herrera, Linda Godfrey, Javier Urrutia, Emilio Custodio, Teresa Jordan, Jorge Jodar, Katherine Delgado, Fabiola Barrenechea
Summary: This study focuses on the confined aquifer system in the Calama basin of northern Chile, using a combination of hydrodynamic, hydrogeochemical, and isotopic methods to evaluate groundwater residence time, recharge sources, and isotopic fractionation. The research provides insights into the interaction between groundwater and surface water in hyper-arid areas and the potential applications in managing scarce groundwater resources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Ayushi Trivedi, M. K. Awasthi, Vinay Kumar Gautam, Chaitanya B. B. Pande, Norashidah Md Din
Summary: The study aimed to calculate the surface runoff and recharge needs for the revival of Kanari river using the SWAT model approach. The results showed that surface runoff accounted for 46.2% of the total precipitation, while percolation accounted for 26.9%, evapotranspiration for 26.9%, and deep recharge and lateral flow for 1.33%. The findings of this study are important for the development of groundwater resources and soil and water conservation planning.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Water Resources
Sileshi Mamo, Behailu Birhanu, Tenalem Ayenew, Getnet Taye
Summary: The study assessed the impacts of future increase in groundwater extraction and decrease in recharge on the groundwater system in the Rib catchment in Ethiopia. It found that the worst-case scenario led to groundwater level drop, reduction in base flows, and decreased evapotranspiration flux, while the optimal scenario showed an increase in groundwater level, base flows, and evapotranspiration flux compared to the worst-case scenario. The results suggest implementing groundwater management measures to mitigate these impacts.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Environmental Sciences
Kartik Jadav, Basant Yadav
Summary: This study used GIS-MCDA to identify suitable sites for managed aquifer recharge (MAR) and found that only 17% of the area is highly suitable. Furthermore, a basin-specific MAR strategy was developed, focusing on agricultural areas and considering water availability for excess irrigations.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Materials Science, Multidisciplinary
Burton R. Patterson
Summary: A new microstructural property M-VS(gb) has been found to describe the rate of volume sweeping by boundaries throughout the entire structure, and the classic grain growth law has been derived using a comprehensive microstructural approach.
Article
Environmental Sciences
Weifei Yang, Changlai Xiao, Zhihao Zhang, Xiujuan Liang, Zhang Fang
Summary: Groundwater resources in mountainous basins are vital for the ecological environment and downstream water supply. This study utilized daily streamflow data to estimate groundwater balance and analyze the response of recharge to rainfall in the Tao'er River Basin of Northeast China. The results showed that recharge mainly occurs through rainfall percolation in summer, with rapid discharge of groundwater through baseflow and evapotranspiration.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Ecology
Narendra Nelli, Diana Francis, Ricardo Fonseca, Olivier Masson, Mamadou Sow, Emmanuel Bosc
Summary: This study investigates the changes in the atmospheric electric field (Ez) during foggy conditions in the hyperarid region of the United Arab Emirates. The results show that as fog persists, Ez becomes more variable due to the absorption and redistribution of charges by the fog, which alters the ion balance and affects electrical conductivity in the atmosphere.
JOURNAL OF ARID ENVIRONMENTS
(2024)
Article
Ecology
Ezra Hadad, Amir Balaban, Jakub Z. Kosicki, Reuven Yosef
Summary: This study investigated whether the prey of striped hyenas has adapted to the change in the natural environment caused by human activities, particularly artificial light at night (ALAN). The results showed that ALAN had no impact on the diet or den distribution of the hyenas in central Israel. The study also found that domestic animals were the most common prey, and there were also some vegetative species in their diet. Overall, the feeding behavior of striped hyenas is influenced by geographical region, habitat, and human activities.
JOURNAL OF ARID ENVIRONMENTS
(2024)
Article
Ecology
Rahim Najafi Tireh Shabankareh, Pardis Ziaee, Mohammad Javad Abedini
Summary: This study evaluated the IMERG satellite-based precipitation product in the Fars province of Iran using daily rain gauges as reference data. The results showed that the product tends to overestimate light rainfall and underestimate heavy rainfall, with the best performance in the 40-80 mm/day range. The accuracy of the product varies by month and is less biased in months with milder temperatures. Additionally, there was a higher correlation in mid-elevated areas, positive bias in low-elevated areas, and negative bias in high-elevated areas. Longer time scales showed considerable improvement in the IMERG estimates.
JOURNAL OF ARID ENVIRONMENTS
(2024)
