Groundwater - Science topic

To run an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behaviour around the underground excavations made in the mine. The stability of an underground drivage is influenced by many factors, primarily the in-situ stress, depth of drivage, orientation of discontinuities, intensity of jointin...

Abstract The coexistence of spiders in the Central European floodplains of the Danube River was assessed at 18 study sites (more than 43,000 individuals identified). Environmental conditions, i.e. groundwater level, flood regime, vegetation and tree shading, were defined as the main factors. The presence or absence of flooding and the depth of the...

Effective hydraulic conductivity is typically used to evaluate groundwater flow in faulted/fractured media. Estimating effective hydraulic conductivity relies on modelling the transmissivity and hydraulic connectivity of faults/fractures using a large dataset. As an alternative to evaluating hydraulic connectivity, flow dimension is an easily avail...

We are delighted to invite you to contribute your innovative findings on "Deep Learning-Based Methods for Groundwater Contamination Identification" to make a contribution to this theme. These papers can include, but are not limited to, the following topics: (1) Identification of groundwater pollution sources based on deep learning； (2) Deep learnin...

In Portuguese, abstract in English.

Groundwater systems play a pivotal role in ensuring food and water security while maintaining vital ecosystem functions. The depletion of numerous global aquifers, however, raises concerns regarding the sustainability of groundwater withdrawals and environmental flows. Despite efforts to mitigate this decline, there remains a striking gap in provin...

El presente estudio se centra en la aplicación de soluciones de ingeniería para abordar la preservar los recursos hídricos, una cuestión crítica en el contexto actual de creciente escasez de agua y variabilidad climática. La investigación tiene como objetivo identificar estrategias y tecnologías que optimicen la disponibilidad y el uso de agua, inc...

The pollution from landfills due to the leakage of leachate is an important source of groundwater contamination. The service life of geomembrane and high-permeability leachate collection system, which play a crucial role in the long-term effectiveness of landfill liner systems, can be greatly shortened due to the complex environmental conditions of...

A continuación, presento algunas ideas para abordar el fomento de la industria del hidrógeno verde en la región de Tacna, Perú, considerando los desafíos hídricos y la necesidad de encontrar fuentes alternativas de agua dulce. Se aborda de manera integral el fomento de la industria del hidrógeno verde en esta región, considerando los desafíos y sol...

El presente estudio se centra en la aplicación de soluciones de ingeniería para abordar la preservar los recursos hídricos, una cuestión crítica en el contexto actual de creciente escasez de agua y variabilidad climática. La investigación tiene como objetivo identificar estrategias y tecnologías que optimicen la disponibilidad y el uso de agua, inc...

Onshore oil spills are directly related to soil contamination and significantly impact groundwater, vegetation, and human life. Immediate cleanup work is carried out when an oil spill occurs, but the currently used preventive measures are insufficient. Therefore, this study independently developed a smart liner that allows general groundwater flow...

Este estudo aborda a importância da escolha adequada do tipo de fundação no projeto e construção de estruturas. Variações regionais em clima, geologia e topografia influenciam diretamente o comportamento do solo, afetando a escolha da fundação mais apropriada para uma obra. Os estudos de solo fornecem informações cruciais sobre a capacidade de supo...

A sobrexploração e a contaminação dos mananciais hídricos estão constantemente em evidência devido à intensa ação antrópica, justificando estudos que indiquem as áreas mais suscetíveis à contaminação. Assim, o presente estudo tem como objetivo o mapeamento do risco de contaminação das águas subterrâneas na região de Pires do Rio, estado de Goiás. P...

La contaminación de los cuerpos de agua superficiales está en aumento, afectando negativamente a la población. La falta del sistema de potabilización en las Pozas de Arunta generan un problema al infiltrarse en aguas subterráneas del distrito de Gregorio Albarracín Lanchipa en Tacna – Perú, conllevan a implementar soluciones como evaluar la aplicac...

This study i ncluded two sites represented in four soils pedons d iffer by their degree of development because of landform, organic matter, fluction of water table, salts accumulation and other environmental conditions. Results of XRD showed a presence of chloritization phenomenon which caused conversion of montmorillonite clay to the chlorite mine...

Many municipalities around the world place their production wells in shallow alluvial aquifers that are adjacent to streams. Pumping these wells then induces the infiltration of surface water into the aquifer, allowing the greater extraction of water without significantly depleting the aquifer. However, induced infiltration poses a risk of introduc...

Using changes in ground temperature to reflect the flow status of groundwater is one of the methods for predicting mine water inrush. In this study, in order to make this method suitable for different geological conditions, an improved method for predicting mine water inrush is established based on the theories of heat transfer and nonlinear water...

Tunnels in the Western Plateau region of China often face numerous problems of high ground stress, as well as highly fractured and weak rock masses in deep sections of the tunnel, which results in an increased risk of large soft rock deformation in tunnels, posing substantial challenges to safe and efficient construction. Hence, risk assessment and...

La gestión sostenible de los recursos hídricos en islas volcánicas es un desafío debido a la variabilidad climática y la limitación de fuentes de agua dulce. Los acuíferos de estas islas, que almacenan agua subterránea en formaciones geológicas, son cruciales para el abastecimiento de agua de la población e industria. Este artículo analiza la regul...

The species Haplophthalmus movilae, long considered as restricted to the sulfidic groundwater ecosystem of Movile Cave was collected from an endogeous location outside the cave. This outlines the endogeous origin of the four species of Oniscidea inhabiting Movile Cave and possible movement of certain species between this cave and other ecosystems.

A survey on the need to incorporate rainwater harvesting systems as an alternative domestic water source in Ghana Abstract-This research survey seeks to gather responses in rainwater gathering and storage using harvesting systems as a key alternative. About 502 responses were gathered. Averaging 8 persons per household and 6 rooms per household. 73...

validated finite element analysis was used to study the seismic response of the Mechanically Stabilized Earth (MSE). A series of parametric studies were conducted to investigate the behavior of MSE walls under seismic conditions using finite element analysis. From the numerical analysis, it can be concluded that during the earthquake, in the static...

Groundwater is an essential resource, particularly in arid and semi-arid regions where surface water is scarce. The increasing global demand for water, coupled with climate change and pollution, has posed significant challenges to the sustainable management of groundwater. The water distribution pattern is not unconnected with the territorial an...

Rewetting peatlands is required to limit carbon dioxide (CO 2 ) emissions, however, raising the groundwater level (GWL) will strongly increase the chance of methane (CH 4 ) emissions which has a higher radiative forcing than CO 2 . Data sets of CH 4 from different rewetting strategies and natural systems are scarce, and quantification and an unders...

Natural ventilation is essential for air renewal, building cooling, and promoting thermal comfort for users. However, its analysis requires complex software. Water tables present an accessible and easy-to-handle alternative to overcome this limitation. The objective is to qualitatively assess whether the results generated by the water table accurat...

In the context of global warming, rising sea levels are intensifying seawater intrusion in coastal areas. Due to the complex hydrodynamic conditions and increasing groundwater over-extraction in these regions, understanding the patterns of seawater intrusion is crucial for effective prevention and control. This study employed a sandbox model to inv...

Groundwater and river-reservoir systems are central to the Central Valley's long-term water supply strategy. The depletion of groundwater levels due to over-pumping is a significant threat to communities relying on these resources. Understanding the complex connection between water use and groundwater levels is crucial to addressing this depletion...

A long and continuous palaeo-course of Assi River, in between Prayagraj and Varanasi, in the Ganga River plains with indications of good groundwater potential had been traced from remote sensing data. Electrical Resistivity Tomography (ERT) has been conducted along eight lines for confirmation of the same palaeo-course in general and to specificall...

The objective of this study is to map the litho-structural and hydrodynamic parameters of the aquifer system in the Boundiali and Kouto departments. The maps were created based on hydrogeological data from 307 boreholes. The altered thickness map shows that alteredthicknesses between 40 and 60 meters are rare, while the saturated thicknesses of the...

Entre los contaminantes que en los últimos años han sido objeto de interés en numerosos estudios científicos están los microplásticos en el ambiente. Estos se han encontrado en el suelo, agua subterránea, marina y continental, sedimentos, aire ambiente, alimentos y bebidas en botellas plásticas. Incluso se localizan al interior de organismos vivos...

A pesquisa determinou a dinâmica da contaminação antropogênica da água subterrânea, especialmente após a histórica enchente do Rio Madeira em 2014 e comparou com 4 anos após o evento de enchente. O estudo envolveu a análise de amostras de água de 580 poços durante diferentes períodos climáticos em 2012, 2013 e 2014 e comparou com analises do ano de...

In this paper, a comparative analysis of the effects of groundwater, seepage and hydraulic heave on the optimal design of embedded retaining walls is carried out. The optimization model for an optimal retaining wall (ORW) minimizes the total length of the retaining wall considering design constraints. The model is extended to include the probabilit...

se diseño una solución tecnológica basada en la determinación de la posición de la interfaz teórica entre las aguas dulces y saladas, elemento crucial para estimar la productividad de los pozos y a prevenir, en este caso, la afluencia de aguas subterráneas dulces.

Se diseño una solución tecnológica basada en la determinación de la posición de la interfaz teórica entre las aguas dulces y saladas, elemento crucial para estimar la productividad de los pozos y a prevenir, en este caso, la afluencia de aguas subterráneas dulces.

The Groundwater Module within the Sustainability Nexus Analytics, Informatics, and Data (AID) Programme of the United Nations University (UNU) addresses critical challenges in sustainable groundwater management. Groundwater resources around the world are under increasing stress from overextraction and pollution, threatening water and food security...

The seismoelectric (SE) wave at the vadose zone‐aquifer interface, which results from the electrokinetic effect, is a valuable tool for groundwater exploration. We propose a method for imaging aquifer interfaces using SE waves. The common‐receiver SE gather, generated by multiple sources, is analogous to the exploding‐reflector seismic gather, form...

An analysis study was conducted to evaluate the effect of the transient groundwater table with and without impacts of seismic loads on stability of excavation nailed slope using Bishop and Janbu simplified methods. The results showed that the factor of safety values increased with increasing of the groundwater table depth and reached a relatively m...

Many coastal regions around the world are experiencing significant groundwater over-exploitation, necessitating scientific studies to prevent seawater intrusion into coastal aquifers. Accurate assessment of groundwater variation is essential for improved water resources management in these regions. Trend analysis of groundwater levels along the coa...

Groundwater contributes to the development of socioeconomic activities in the Aga-Foua-Djilas watershed. Knowledge of the spatiotemporal variation in groundwater storage can contribute to better resource planning, especially in the context of climate change, which is having an impact on groundwater recharge. This study is based on the analysis of G...

Accurate groundwater level (GWL) simulations facilitate reconstructions and projections for analysing historical and future groundwater trends and variability at the decadal scale. In this thesis, we investigate the use of deep learning (DL) approaches for GWL simulations, reconstructions, and projections, with a focus on capturing low-frequency va...

Brazil is the ninth largest user of groundwater worldwide. More than 70% of the cities in São Paulo state are partially or entirely supplied by groundwater, making it the largest user in the country, but generating problems associated with intense exploitation in some regions. Managed aquifer recharge (MAR) can improve water security by purposeful...

In order to investigate the failure mechanism of the reinforced muddy soft rock under the influence of the hydration reaction when ground water is present, a series of confined compressive tests and Acoustic Emission (AE) recordings were conducted subject to various moisture content levels and lateral confining stresses. It was found that the failu...

Project: Intelligent governance of groundwater resources in Algeria through geophysics, gis and geoinformatics.

With the development and utilization of large-scale urban underground space, the interaction between groundwater and underground structures has become a research hotspot. To analyze the pore pressure transfer mechanism of granite weathered soil under high water head conditions, this article uses the consolidation differential equation of saturated...

A numerical inverse method called FlowPaths is presented to solve for the hydraulic conductivity field of an isotropic heterogeneous porous medium from a known specific discharge field (and constant-head boundary conditions). This method makes possible a new approach to reactive transport experiments, aimed at understanding the dynamic spatial and...

Karst environments are vulnerable to water and mud inrushes for tunnel engineering, and prolonged drainage in tunnels leads to environmental geological issues such as karst collapse and soil erosion in the surrounding area. This article examines these environmental geological issues that arose during the construction and operation of the Chaoyang T...

Gravelly pavement herbfields are a groundwater-dependant vegetation type; water composition and supply are hypothesised to be a crucial factor affecting the distribution of plant species in the community. We described the relationship between plant species distribution in pavements and the spatial and temporal availability and composition of water....

Climate change has impacted hydrological processes worldwide, and understanding such impacts is fundamental to assessing water availability and supporting water resource management. The present study aimed to assess groundwater storage temporal trends in four headwater basins (Aiuruoca River – southern Minas Gerais River; Bonito River – southern Ba...

Spring snowmelt has a significant impact on the hydrological cycle in seasonally frozen soil areas. However, scholars hold differing, and even opposing, views on the role of snowmelt during the thawing period in groundwater recharge. To explore the potential recharge effects of spring snowmelt on groundwater in seasonal frozen soil areas, this stud...

Representing and preserving complex (non‐Gaussian) spatial patterns in aquifer flow properties during model calibration are challenging. Conventional parameterization methods that rely on linear/Gaussian assumptions are not suitable for representation of property maps with more complex spatial patterns. Deep learning techniques, such as Variational...

Se analizan los cambios en el acuífero costero de Chipiona durante el último medio siglo, motivados por las transformaciones agrarias y la gestión de los recursos hídricos en la comarca. El acuífero pasó de sufrir procesos de sobreexplotación e intrusión marina en los años 90, a un incremento en el almacenamiento por la reducción de bombeos y la ma...

River-aquifer interactions play a crucial role in water availability, influencing environmental flows and impacting climate dynamics. Where groundwater tables lie below river water levels, stream water can infiltrate into the underlying aquifer, reducing streamflow. However, the prevalence of these “losing” rivers remains poorly understood due to l...

Weathering processes of rocks lead to the formation of residual soil layers, which are typically characterized by a deep groundwater table and a thick unsaturated zone. Hence, the calculation of a slope's safety factor under the influences of climatic circumstances is a function of unsaturated characteristics, such as the soil-water characteristic...

Geogenic arsenic (As) contamination in groundwater poses a significant public health risk in many regions worldwide. Previous studies have reported hydrogen peroxide (H2O2) concentrations ranging from 5.8 to 96 μmol L−1 in rainwater, which may contribute to the oxidation and removal of As. However, the influence of natural organic matter, such as h...

Pavement inundation disrupts natural drainage, causing its structural damage and potential failure. This study investigates the impact of moisture fluctuations on pavement failure through four distinct approaches. Firstly, the critical strain at the top of the subgrade layer in unsaturated conditions was predicted using non-linear visco-elastic lay...

The large deformation and strong rheological characteristics of the underground rock body under complex geological conditions have led to the failure of the support system and even the instability of tunnels from time to time. Based on the theory of groundwater seepage, the elastic solution of the mechanical model of the tunnel anchorage support sy...

This study examined the distributions of radon and its parent radionuclides ²²⁶ Ra and ²³⁸ U in groundwater samples from the Singhbhum region, Jharkhand, India. Radon showed a heterogeneous spatial distribution pattern, with a lognormal distribution. A good correlation between radon bubbler-Lucas cells and liquid scintillation counting techniques w...

The decline in the quality and quantity of groundwater resources is one of the biggest challenges in natural resource management in many areas. Mapping the potential of groundwater requires technology that can identify and detect the presence of water sources with high accuracy. The purpose of this study is to develop a groundwater detection applic...

One of the most principal issues in regional hydrogeochemistry is the study of hydrogeochemical zonality of groundwater. This phenomenon is manifested in regular and systematic changes in the chemical composition and mineralization of groundwater, varying by geographic area and depth. Understanding these regularities is not just academically signif...

The trend analysis of the study was acquired by selecting multiyear seasonal groundwater table data and monitors the wells in each sub-area under the study area. To calculate and assess the spatial differences in the inanition of groundwater table, geostatistical methods was applied based on data from 14 groundwater wells during the period from Jan...