Article
Environmental Sciences
Florimond De Smedt
Summary: This study presents a new analytical solution for estimating the storage coefficient of an overlying aquitard in a leaky aquifer. The solution is demonstrated to accurately calculate the storage properties of the aquitard using data from a pumping test.
Article
Biodiversity Conservation
Debao Lu, Dongjing Huang, Cundong Xu
Summary: A novel method combining ERT with pumping test data was proposed to obtain the spatial distribution of hydraulic conductivity for metamorphic rock and granite fault zone in Xinchang, China. The results showed that the hydraulic conductivity calculated using the R-K correlation had an error of less than 10.50% compared to that measured by pumping tests, indicating superior accuracy of the proposed method.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Yongliang Xu, Chaoyang Du, Haizhi Ma, Wei Pang, Suhang Huang, Shimin Li
Summary: The study discovered an initial difference in hydraulic head in aquitards, causing seepage beyond a certain threshold. Analysis of test data revealed a deviation from Darcy's law as the theoretical basis for this phenomenon. The experimental results validated the theoretical explanation for the observed behavior.
Article
Water Resources
J. Fernandez-Galvez, J. A. P. Pollacco, L. Lilburne, S. McNeill, S. Carrick, L. Lassabatere, R. Angulo-Jaramillo
Summary: This study focuses on obtaining a unique set of physical bimodal soil Kosugi hydraulic parameters from inverse modeling, by deriving a procedure to reduce the number of optimized parameters and dynamically constraining the hydraulic parameters. The method successfully reduces the parameter count and constraints the hydraulic parameters without compromising the fit of theta(psi) and K(theta) functions, resulting in more physical hydraulic parameters.
ADVANCES IN WATER RESOURCES
(2021)
Article
Geosciences, Multidisciplinary
Martijn D. van Leer, Willem Jan Zaadnoordijk, Alraune Zech, Jasper Griffioen, Marc F. P. Bierkens
Summary: This study investigates whether a pumping test can be used to obtain the correlation lengths needed for geostatistical upscaling and account for the uncertainty about heterogeneous aquitard conductivity. The results show that random realizations generated from core-scale data yielded a better fit to the pumping test data than the traditional pumping test result, assuming homogeneous layers are selected. Ranges of horizontal and vertical correlation lengths that fit the pumping-test well are found, but considerable uncertainty remains.
HYDROGEOLOGY JOURNAL
(2023)
Article
Engineering, Geological
Zhangbo Wan, Weichang Xu, Xuecheng Bian, Yunmin Chen
Summary: This paper presents a full-scale physical modeling investigation on mud pumping in ballastless trackbed. The study found that high-speed train passages caused a separation between the track structure and the underlying roadbed, allowing rainwater to intrude into the roadbed. This intrusion led to saturation of the roadbed and the formation of excess pore water pressure. The study also revealed that mud pumping was driven by hydraulic gradients and amplified by the excess pore water pressure induced by high-speed train passages. Mud pumping resulted in a decrease in trackbed stiffness and an increase in vibration velocity of the track slab.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Emin Ciftci, A. Ufuk Sahin
Summary: This study proposes a regression-based solution approach for analyzing constant-discharge pumping tests in confined aquifers. By utilizing the similarity solution, a regression model was developed to establish a link between a selected drawdown value and its dimensionless counterpart. The proposed method eliminates the difficulties encountered with conventional methods and provides highly accurate parameter estimates.
JOURNAL OF HYDROLOGIC ENGINEERING
(2023)
Article
Engineering, Geological
Jiri Svoboda, David Masin, Jan Najser, Radek Vasicek, Irena Hanusova, Lucie Hausmannova
Summary: This paper mainly introduces the use of clay materials such as bentonites as a buffer and backfill for high-level radioactive waste disposal. The design is based on mathematical models that are validated using laboratory data. The laboratory research aims to determine the hydromechanical properties and stress path behavior of BCV bentonite. The results show that the behavior is influenced by stress path and water introduction method, and that micro- and macrostructures have a significant impact on material properties and mathematical models. A hypoplastic model is implemented and validated to predict the behavior of bentonite in nuclear waste repositories.
Article
Geosciences, Multidisciplinary
N. Peyraube, J. D. Villanueva, R. Lastennet, A. Denis, Q. Lavigne, N. Houillon, F. Naessens, B. El Oifi, S. Mateo
Summary: This study compared the reproducibility of three methods (Dupuit, Thiem, and Boulton) for estimating hydraulic conductivity (K). The results showed that the Thiem method had the smallest dispersion, with half of the values falling within a range of ±11% of the average value. The Dupuit method provided average estimated K values that were close for both 2-hour and 5-day pumping tests, making it a good compromise between variability and site conditions.
HYDROGEOLOGY JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
N. Peyraube, J. D. Villanueva, R. Lastennet, A. Denis, Q. Lavigne, N. Houillon, F. Naessens, B. El Oifi, S. Mateo
Summary: In this study, the authors compared the Dupuit, Thiem, and Boulton methods for estimating hydraulic conductivity (K). They found that the Thiem method had the smallest dispersion and could be used for estimating K for an individual borehole. The Dupuit method provided a good balance between variability and sensitivity to site conditions.
HYDROGEOLOGY JOURNAL
(2023)
Article
Engineering, Aerospace
Bin Zhang, Benny Endelt, Lihui Lang, Yang Zhao, Shu Yan, Karl Brian Nielsen
Summary: This paper determines the flow stress curve of 5049-O aluminium alloy using a tube hydraulic bulging test. It introduces an inverse strategy that combines the finite element method with gradient-based optimization techniques to determine the constitutive parameters of the material. The results show that this framework can achieve more accurate parameter identification by eliminating assumptions made in classical theoretical analysis.
CHINESE JOURNAL OF AERONAUTICS
(2022)
Article
Environmental Sciences
I. C. Oli, A. I. Opara, O. C. Okeke, C. Z. Akaolisa, O. C. Akakuru, I. Osi-Okeke, H. M. Udeh
Summary: This study successfully estimated the hydraulic parameters of groundwater in the Abakaliki area using a combination of resistivity data and limited pumping test data, categorizing the area into low, medium, and high groundwater potential zones.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Mechanics
Marco Rossi, Attilio Lattanzi, Frederic Barlat, Jin-Hwan Kim
Summary: The hydraulic bulge test (HBT) is an important experimental technique to identify the properties of materials, particularly metals. This paper proposes a new approach using stereo-DIC to obtain the displacement field and apply it in an inverse identification scheme for evaluating the properties of metals.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Environmental Sciences
Michela Trabucchi, Daniel Fernandez-Garcia, Jesus Carrera
Summary: Understanding groundwater flow and contamination transport requires characterizing aquifer attributes and hydraulic connectivity structures. In evaporitic aquifer systems, karst conduits and fault zones are important preferential flow channels that impact saltwater exploitation. Hydraulic connectivity can enhance inflow of less evaporated brine, improving efficiency. A study using stochastic inversion method showed successful characterization of preferential flow zones in a large evaporitic aquifer, with consistent results from different data sources.
WATER RESOURCES RESEARCH
(2022)
Article
Construction & Building Technology
Zijun Xiong, Justin Berquist, H. Burak Gunay, Cynthia A. Cruickshank
Summary: Air infiltration has a significant impact on building energy performance and indoor environment. This study proposes a low-cost inverse model-based approach for estimating air infiltration rates by extracting data from a building automation system. The results indicate that the proposed method can estimate air infiltration rates with reasonable accuracy using existing CO2 data.
BUILDING AND ENVIRONMENT
(2021)
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)