Article
Environmental Sciences
S. K. Marshall, P. G. Cook, C. T. Simmons, L. F. Konikow, S. Dogramaci
Summary: This study demonstrates that sharp hydrogeological barriers can be included in groundwater model inversion even when their presence is uncertain. The use of phantom structures improves the identification of barriers and successfully infers their location and properties.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Civil
Israel Quino Lima, Oswaldo Eduardo Ramos Ramos, Mauricio Ormachea Munoz, Maria Isabel Chambi Tapia, Jorge Quintanilla Aguirre, Arslan Ahmad, Jyoti Prakash Maity, Md Tahmidul Islam, Prosun Bhattacharya
Summary: Arsenic contamination of drinking water is a global issue, and in the Bolivian Altiplano, the presence of high levels of arsenic, boron, and manganese in shallow wells poses health risks. Groundwater flows from southeast to northwest, indicating interactions between groundwater and surface water in the region.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Civil
Gaston Mendoza-Veirana, Santiago Perdomo, Jeronimo Ainchil
Summary: This paper presents a geoelectric exploration in the southwest sector of the Interserrana Basin in Buenos Aires, Argentina. Through the use of inversion and interpolation techniques, a depth section of the resistive hydrogeological basement was obtained. The study also included an uncertainty analysis and a geological interpretation of the results.
TECNOLOGIA Y CIENCIAS DEL AGUA
(2022)
Article
Geochemistry & Geophysics
C. Geoffrey Wheat, Michael J. J. Mottl, Andrew T. T. Fisher, Samuel Hulme
Summary: The chemical composition of formation waters in the upper basaltic crust varies across different regions due to variations in water-rock reactions, residence times, exchange rates, and microbial processes. Evidence of large-scale lateral flow and sites of seawater recharge and formation water discharge were also found.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Environmental Sciences
A. M. Anderson, D. M. Allen, J. G. Venditti
Summary: The amount of fresh water in coastal deltas is controlled by subsurface structures. This study explores the range of subsurface permeability and hydraulic gradient in three types of deltas (fluvial, wave, and tidal) using morphodynamic models. The results show that deltaic landforms have a median permeability of 4.0 x 10-12 m2, an average hydraulic gradient of 3.9 x 10-4, and a mean specific discharge of 1.3 x 10-8 m/s. The study also finds that high permeability bodies are associated with channelization and that morphodynamic influences and geomorphic characteristics have a significant impact on the subsurface permeability and connectivity.
WATER RESOURCES RESEARCH
(2023)
Article
Hospitality, Leisure, Sport & Tourism
A. George Assaf, Mike Tsionas, Florian Kock
Summary: This paper introduces more advanced panel data specifications that exploit heterogeneity and allow for arbitrary forms of autocorrelation and heteroskedasticity in the error terms. It builds on the Mundlak device to propose panel data models that allow for random slope coefficients, as well as time slope coefficients. The paper develops and estimates the model in a Bayesian framework, and the methods can be generalized to many nonlinear models.
INTERNATIONAL JOURNAL OF CONTEMPORARY HOSPITALITY MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Llorenc Planaguma, Xavier Bolos, Joan Marti
Summary: Phreatomagmatism, caused by the interaction of erupting magma and groundwater, is a common phenomenon in monogenetic volcanism. This study found that pressure variations inside the eruptive conduit play a major role in controlling phreatomagmatism, rather than the lithological and hydraulic properties of aquifers.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Article
Water Resources
Christopher V. Henri, Thomas Harter
Summary: Nitrate contamination of aquifers poses a threat to sustainable water resource production globally. Understanding the temporal and spatial dynamics of nitrate reduction in groundwater systems is challenging. The results of this study show that the spatial variability of denitrification rate coefficients has a significant impact on concentration statistics observed at extraction wells.
ADVANCES IN WATER RESOURCES
(2022)
Article
Geosciences, Multidisciplinary
Victoria A. Phan, Kate E. Zeigler, David S. Vinson
Summary: The study analyzed environmental tracers in northeastern New Mexico, USA to investigate the relationship between recharge, residence time, and hydrogeologic setting. The results showed different water sources and recharge characteristics based on isotopic composition, aiding in the understanding of the local hydrological cycle processes.
HYDROGEOLOGY JOURNAL
(2021)
Article
Computer Science, Artificial Intelligence
Manish Aggarwal
Summary: A general entropy framework is proposed, which redefines existing fuzzy entropy functions and extends them to the probabilistic-fuzzy domain, demonstrating their usefulness in a real world case study.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Ecology
Diane De Steven, Charles A. Harrison
Summary: Wetland depressions in the U.S. Atlantic Coastal Plain are important habitats that support diverse plant communities. Due to the vulnerability of these wetlands to degradation on private lands, protected and managed public lands are crucial for their conservation. The use of a hydrogeologic-landscapes approach can help analyze the relationships between wetland vegetation and depression attributes, leading to the development of effective management and restoration strategies.
Article
Environmental Sciences
Tanjila Akhter, Maheen Naz, Mashfiqus Salehin, Sharif Tanjim Arif, Sonia Ferdous Hoque, Robert Hope, Mohammad Rezaur Rahman
Summary: Transitioning from MDG to SDG poses a significant challenge for SDG 6.1, particularly in terms of delivering clean drinking water efficiently due to stricter indicators and water quality constraints. This study focuses on drinking water security in coastal areas of southwest Bangladesh and reveals that the exponential growth of groundwater-based technologies does not necessarily translate to safe drinking water coverage due to the high variability of groundwater salinity risks. The spatial variability of hydrogeologic constraints and groundwater salinity risks also affects the accessibility, reliability, and affordability of different water supply technologies, emphasizing the need for accurate knowledge of hydrogeologic heterogeneity and water quality monitoring to achieve SDG 6.1 targets.
Article
Geosciences, Multidisciplinary
Lei Ma, Hui Deng, Yongshuai Yan, Yaping Deng, Weidong Zhao, Xiaohui Tan, Jiazhong Qian
Summary: This paper presents a method that combines geophysical data and borehole data to improve the characterization of hydrofacies distribution and reduce uncertainty in porous media simulations. Through a sandbox experimental investigation, the method assimilates borehole data and electrical resistivity tomography (ERT) data using a histogram probability matching method. The hydrofacies distribution is then simulated using the transition probability geostatistics (TPG) method based on the Markov chain. The results show that ERT data can provide more lithological information for TPG simulation and the combined use of ERT data and borehole data can construct a relatively high-accuracy hydrofacies model.
HYDROGEOLOGY JOURNAL
(2022)
Article
Geography, Physical
Mark Abolins, Albert Ogden
Summary: In the aftermath of a storm on February 6, 2020, central Tennessee, USA experienced flooding and sinkholes, primarily concentrated in areas where two Late Ordovician aquitards are close to or within 10 meters of the surface. The study area of approximately 278 square kilometers is located about 35 kilometers southeast of central Nashville. Analysis reveals that bedrock aquitards near or within 10 meters of the surface significantly contribute to flooding and sinkhole formation. This highlights the importance of shallow bedrock aquitards in understanding and predicting these phenomena.
Article
Environmental Sciences
Nicolas Akil, Guillaume Artigue, Michael Savary, Anne Johannet, Marc Vinches
Summary: Neural networks are used to forecast hydrogeological risks, such as droughts and floods, with uncertainties arising from input data, model architecture, and parameters. This study focuses on predicting groundwater levels in Vailly, France, and estimating uncertainties related to rainfall distribution and parameter initialization. Ensemble models of various initializations are shown to be effective in estimating parameter uncertainty, while Logistic, Gumbel, and Raised Cosine laws fit well with the distribution of groundwater levels. The establishment of models of correctness allows for a confidence interval associated with forecasts, with flexibility in choosing the confidence level.
Review
Geosciences, Multidisciplinary
Pascal Castellazzi, Richard Martel, Devin L. Galloway, Laurent Longuevergne, Alfonso Rivera
Editorial Material
Geosciences, Multidisciplinary
Devin L. Galloway, Gilles Erkens, Eve L. Kuniansky, Joel C. Rowland
HYDROGEOLOGY JOURNAL
(2016)
Review
Geosciences, Multidisciplinary
Pascal Castellazzi, Richard Martel, Devin L. Galloway, Laurent Longuevergne, Alfonso Rivera
Article
Environmental Sciences
S. E. Ingebritsen, D. L. Galloway
ENVIRONMENTAL RESEARCH LETTERS
(2014)
Review
Geosciences, Multidisciplinary
Devin L. Galloway, Thomas J. Burbey
HYDROGEOLOGY JOURNAL
(2011)
Article
Multidisciplinary Sciences
Cheinway Hwang, Yuande Yang, Ricky Kao, Jiancheng Han, C. K. Shum, Devin L. Galloway, Michelle Sneed, Wei-Chia Hung, Yung-Sheng Cheng, Fei Li
SCIENTIFIC REPORTS
(2016)
Article
Geology
Devin L. Galloway, Michelle Sneed
BOLETIN DE LA SOCIEDAD GEOLOGICA MEXICANA
(2013)
Article
Environmental Sciences
Matteo Frigo, Massimiliano Ferronato, Jun Yu, Shujun Ye, Devin Galloway, Dora Carreon-Freyre, Pietro Teatini
WATER RESOURCES RESEARCH
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Devin L. Galloway
2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
(2014)
Article
Geochemistry & Geophysics
N. E. King, D. Argus, J. Langbein, D. C. Agnew, G. Bawden, R. S. Dollar, Z. Liu, D. Galloway, E. Reichard, A. Yong, F. H. Webb, Y. Bock, K. Stark, D. Barseghian
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2007)
Article
Geosciences, Multidisciplinary
Devin L. Galloway, Joern Hoffmann
HYDROGEOLOGY JOURNAL
(2007)
Article
Geosciences, Multidisciplinary
P Vincent, S Larsen, D Galloway, RJ Laczniak, WR Walter, W Foxall, JJ Zucca
GEOPHYSICAL RESEARCH LETTERS
(2003)
Article
Geosciences, Multidisciplinary
E Roeloffs, M Sneed, DL Galloway, ML Sorey, CD Farrar, JF Howle, J Hughes
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2003)
Article
Environmental Sciences
J Hoffmann, DL Galloway, HA Zebker
WATER RESOURCES RESEARCH
(2003)
