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Hydrogeology - Science topic

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Publications related to Hydrogeology (10,000)
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Article
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Mass movements constitute major natural hazards in the Alpine realm. When triggered on slopes adjacent to lakes, these mass movements can generate tsunami-like waves that may cause additional damage along the shore. For hazard assessment, knowledge about the occurrence, the trigger and the geomechanical and hydrogeological mechanisms of these mass...
Article
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Sustainable heat extraction is of utmost importance for the economic life of geothermal production systems. Especially in hydrothermal sedimentary basins, a temperature decrease at the production well prompts a financial loss. A premature thermal breakthrough occurred in one of the geothermal projects in the Greater Munich Area, a well-known region...
Article
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The oases in the arid the Nefzaoua region in central-western Tunisia are associated with spring mounds. Spring mounds result from an exceptional succession of geomorphological, hydrogeological and climatic conditions and processes that follow each other in a specific order. They look like small volcanoes that range from 200 m to more than 2000 m in...
Article
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Geothermal energy is taken as an important and future oriented energy source because of its renewable and clean features. The growth of geothermal exploitation and utilization, especially electricity generation, is still quite slow globally. The reason behind this situation can be attributed to high exploitation risk and cost, high water demand, an...
Article
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Zusammenfassung Eine nachhaltige Wasserversorgung in urbanen Gebieten stellt aufgrund des Nutzungsdrucks sowie vielfältiger anthropogener Einträge eine große Herausforderung dar. Künstliche Grundwasseranreicherung hat das Potenzial, den Wasserbedarf zu decken und ggf. vorhandene Schadstoffkonzentrationen zu verdünnen. Durch hohe Infiltrationsraten...
Article
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Groundwater is an important source for domestic and irrigation purposes in Asyut area. Water quality varied widely due to complex geochemi cal processes and pollution sources. Understanding the processes controlling groundwater chemistry is necessary to overcome related problems. Multivari ate statistics revealed that groundwater is afected by anth...
Article
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The nonlinear groundwater level fluctuations depend on the interaction of many factors such as evapotranspiration, precipitation, groundwater abstraction, and hydrogeological characteristics, making groundwater level prediction a complex task. Groundwater level changes are among the most critical issues in water resource management, which can be pr...
Article
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Quantitative assessment of drainage basin through morphometric analysis is one of the important methods in hydrological and hydrogeological investigations. In the last couple of decades, Geographical Information System (GIS) techniques are being used in such analysis and has become an important tool, for assessing various terrain and morphometric p...
Article
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In this study, we prepare guidelines for hydrothermal-activity stage classification and evaluate the power-generation potential of geothermal wells based on a natural analog study on the hydrogeological and thermal structures and hydrothermal-alteration minerals in a low-sulfidation epithermal deposit. As such, many high-temperature geothermal well...
Article
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Reservoir immersion will lead to some environmental geological problems, such as soil swamping or salinization, reduction of building foundation strength, or even overall instability. Reservoir scope of immersion is closely related to changes in groundwater levels. According to the geological and hydrogeological conditions pertaining in the Jiangxi...
Article
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This study was carried out to acquire hydro-geophysical data and provide detailed interpretation of the data in parts of Malete, Moro local government, Kwara State, Nigeria. The geographical coordinates of the study area are longitude 8˚ 42' 0" East and Latitude 4˚ 28' 0" North. A total of 16 Vertical Electrical Soundings were carried/ estimated ou...
Article
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Groundwater budgets and fluxes are affected by human activities and climate change. Numerical models are cost-effective tools to investigate the different components of the hydrologic cycle. In this study, a groundwater flow model of the unconfined aquifers of the Campania region (Italy) has been developed and calibrated in Processing Modflow 11, r...
Conference Paper
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The western part of the island Mljet is established as the National Park since 11 th of November 1960, because of its characteristic attractiveness and harmony between nature and structure. Local people preserved that area of alterations that would be dangerous and would disrupt harmony and historical and authentic quality. The island of Mljet is b...
Poster
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https://rigeo.cprm.gov.br/jspui/handle/doc/22817 - Localizados no centro sul do estado de São Paulo (Figura 1), os municípios de Botucatu (149.718 habitantes), São Manuel (41.287 habitantes) e Pratânia (5.371habitantes) totalizam 191.005 habitantes estimados para 2021 segundo o IBGE. Apenas o município de Pratânia possui o seu território inteiro na...
Article
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Groundwater drought response to meteorological forcing depends on initial hydrological conditions. This makes it difficult to characterise groundwater droughts and identify the drought vulnerability of aquifers. The objective is to increase the understanding of groundwater memory and response to meteorological forcing in lowland post-glacial enviro...
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We investigate transport of an inert solute in multidimensional porous media characterized by spatially variable hydraulic conductivity. Through the use of a GPU-accelerated solute transport simulator based on the Random Walk Particle Tracking technique, we show how different factors such as the degree of heterogeneity, flow dimensionality and sour...
Article
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Haiti’s groundwater resources are poorly understood and scarcely researched, despite their importance as the principal source for water supply. The knowledge gap and its role of inhibiting informed relief, recovery and investments in development are described, along with an update on progress towards the UN Sustainable Development Goals. This essay...
Article
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Totko river basin is a semi-arid watershed, which undergoes severe water crisis during the dry season. Presently, due to increase in population, demand of food has increased leading to a rise in growth of high yield crop variety and usage of chemical fertilizers and pesticides. So, surface water as well as groundwater is getting polluted. In this s...
Conference Paper
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https://rigeo.cprm.gov.br/jspui/handle/doc/22817 - Palavras-Chave: Domínios Hidrogeológicos, Águas Subterrâneas, Aquífero Guarani. INTRODUÇÃO E OBJETIVO Localizados no centro sul do estado de São Paulo (Figura 1), os municípios de Botucatu (149.718 habitantes), São Manuel (41.287 habitantes) e Pratânia (5.371habitantes) totalizam 191.005 habitantes...
Article
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Central Italy is characterized by complex orography. The territorial response to heavy precipitation may activate different processes in terms of hydrogeological hazards. Floods, flash floods, and wet mass movements are the main ground effects triggered by heavy or persistent rainfall. The main aim of this work is to present a unique tool that is b...
Poster
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https://rigeo.cprm.gov.br/jspui/handle/doc/22816 - Pardinho River Basin: hydrogeological domains, aquifer productivity, annual volumes exploited, soils, soil infiltration capacity and spatialization of average annual rainfall Cuenca del río Pardinho: dominios hidrogeológicos, productividad de los acuíferos, volúmenes anuales explotados, suelos, cap...
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Adolf and Günther Thiem, father and son, left behind a methodological legacy that many current hydrogeologists are probably unaware of. It goes far beyond the Dupuit–Thiem analytical model for pump test analysis, which is connected to their name. Methods, which we use on a day-to-day basis today, such as isopotential maps, tracer tests, and vertica...
Article
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Critical Zone (CZ) science has developed in recent years, involving different disciplines that vary depending on the specific research focus. This multidisciplinary approach highlights the relevance of the Underground component of the Critical Zone (UCZ) in regulating the water cycle, which can influence the complex equilibrium of the whole CZ. In...
Conference Paper
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https://rigeo.cprm.gov.br/jspui/handle/doc/22816 - Palavras-Chave: Domínios Hidrogeológicos, Águas Subterrâneas, Aquífero. INTRODUÇÃO, OBJETIVO E METODOLOGIA Localizada na sub-bacia 85, no centro leste do estado do rio Grande do Sul (Figura 1), a bacia hidrográfica do rio Pardinho possui grande importância na região central do estado, pois é a prin...
Article
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Seawater ingress is a widespread environmental issue posing threat to the fresh groundwater reserves of the coastal aquifers of Andaman and Nicobar Islands (ANI) particularly after the great Indian Ocean Tsunami 2004, and the comprehensive investigations of seawater ingress in this region are relatively uncommon. In this context, the spatial distri...
Article
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Assessing the variations in space and time of groundwater circulation in volcanic islands is of paramount importance to the description of the hydro-geo-thermal system and implementation of hydrogeological, geochemical, and volcanic monitoring systems. In fact, the reliable reconstruction of the groundwater potentiometric surface in such composite...
Article
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Based on MODIS EVI data of August collected from 2010 to 2021, and taking the Yingpanhao coal mine as an example, the spatiotemporal variation features of vegetation are analyzed using time series analysis, trend analysis and correlation analysis methods in the eco-geo-environment of the phreatic water desert shallows oasis. A significant increase...
Article
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Groundwater is an important resource for domestic use and irrigation in the Yinchuan region of northwest China. However, the quality of groundwater in this region is declining due to human activities, with adverse effects on human health. In order to study the effects of chemical elements in groundwater on human health, the human health risk of dri...
Article
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In mountain headwater streams, the quality and resilience of summer cold-water habitat is generally regulated by stream discharge, longitudinal stream channel connectivity and groundwater exchange. These critical hydrologic processes are thought to be influenced by the stream corridor bedrock contact depth (sediment thickness), a parameter often in...
Article
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Anthropogenic influences and the excessive input of reactive nitrogen compounds into the environment have already severely destabilized the natural nitrogen cycle. Especially in northwestern Germany, many water bodies are polluted by nitrate, inducing negative effects on the ecosystem and drinking water as well as possible risks to human health. In...
Article
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Accurate estimation of hydrogeological parameters such as hydraulic conductivity is an important part of hydrogeology studies that is essential for careful management and protection of groundwater resources. Various field and laboratory methods have been proposed for estimating hydraulic conductivity Which is generally done using hydrogeological da...
Article
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Today Ground water is the main source of drinking, agriculture and other uses for humans. The demand for this critical and strategic natural resource increased with population growth and development of society. This increasing has been declining water resources and damage aquifers environment. Therefore, we need to manage aquifers and understanding...
Article
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Ensuring water availability for agriculture and drinking water supply in semi-arid mountainous regions requires control of factors influencing groundwater availability. In most cases, the population draws its water needs from the alluvial aquifers close to villages that are already limited and influenced by current climatic change. In addition, the...
Article
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Submarine groundwater discharge (SGD) can deliver substantial nutrient and contaminant loads to nearshore coral reefs. Correctly scaling SGD rates from a point source to a reef is generally a linear process involving simplified assumptions on the hydrogeology, bathymetry, and nearshore hydrodynamics that are essential to properly assess SGD scale a...
Article
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Nawalparasi-West/Parasi is one of the severely affected districts in the Terai lowlands of Nepal by arsenic (As) contamination in groundwater, exceeding standards of 10 ppb (WHO) and 50 ppb (Nepal Drinking Water Standard). This study presents the spatial and temporal distribution of As across 6 km × 10 km region in Parasi via meteorological, hydrog...
Article
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Groundwater flow and transport are crucial for performance and safety assessment in the radioactive waste geological disposal. This study presents the groundwater flow and advective transport simulations for assessing the performance of a reference repository placed in fractured rocks. The study involves the concept of radionuclides migrating into...
Article
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Mining activities depend significantly on water resources availability as it consists a major tool of the extraction, processing and the post closure mining operations. Especially, groundwater is the major water source in most mining areas. However, overexploitation, competition from the communities and climate change effects have caused significan...
Article
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The present investigation provides measurements of radon (²²²Rn) concentration levels in 20 thermal waters at the Campi Flegrei volcanic caldera, an important geothermal system with hydrothermal manifestations in the Neapolitan area (Southern Italy). We used a RAD7® Radon-in-air detector equipped with Big Bottle RAD H2O and DRYSTIK accessories (Dur...
Article
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Water resources in India's Indo-Gangetic plains are over-exploited and vulnerable to impacts of climate change. The unequal spatial and temporal variation of meteorological, hydrological and hydrogeological parameters has created additional challenges for field engineers and policy planners. The groundwater and surface water are extensively utilize...
Article
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classes of VI in the study area, namely low (31.5-60), moderate (60-75), and high (75-13). The validation of the vulnerability model revealed a good correlation with NO 3 − and provided a high discretization of the groundwater vulnerability from anthropogenic pollution. This approach implies that more efforts should be taken to preserve the groundw...
Article
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Aquifer storage and recovery (ASR) involves the injection of freshwater into an aquifer for temporary water storage and later use. Previous studies have shown that density‐driven convection may render part of the injectant unrecoverable when ASR is implemented in a saline aquifer. Where heterogeneity creates a significant proportion of immobile gro...
Article
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The vertical–horizontal curtain system (VH curtain) is sometimes utilized in foundation pit dewatering under complex hydrogeological conditions. However, the working mechanism of this system when the horizontal curtain is semi-permeable and cannot completely cut off the bottom aquifer remains unknown. A transparent soil physical model test was perf...
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Millions of people depend on ecosystem services provided by Tropical Dry Forests (TDFs), yet their proximity to population centers, seasonally dry climate, and the ease at which they are converted to agriculture has left only 10 % of their original extent globally. As more TDFs become protected, basic information relating TDF age to subsurface wate...
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Nairobi, Kenya’s capital city, is one of the fastest-growing cities on the continent. The rapid expansion of human activities has resulted in the overexploitation of natural resources, such as water. In the past, Nairobi had been identified as a vulnerable area to environmental hazards, such as land subsidence. Due to the lack of a functioning defo...
Article
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During tunnel construction in strongly developed karst terrain, water inrush hazards often occur due to the complex hydrogeological conditions, which require accurate prediction of water inflow. In this study, a dynamic modeling approach for water inflow prediction of karst tunnels using the conduit flow process (CFP) is developed that considers bo...
Article
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Le présent travail a pour objectif la modélisation hydrodynamique de la nappe Quaternaire de Figuig ; généralement la nappe circule dans des alluvions limoneuses et des calcaires travertineux du Quaternaire avec un substratum imperméable constitué des marnes du Jurassique. La zone d’étude est caractérisée par un climat désertique. La modélisation h...
Article
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Due to the complex and invisible of hydrogeology in karst area, underground construction often encountered gushing water disaster in engineering process, which has a significant negative impact on engineering construction. In this paper, based on the theoretical analysis, slurry performance control, indoors model experiment, engineer application, a...
Book
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This book covers the important and recent aspects of describing groundwater contamination and its fundamentals. The book also assembles various recent techniques to assess groundwater contamination and its relation to different fields such as science, engineering, planning, and management practices. The recent applications of groundwater assessment...
Conference Paper
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Background/Objectives. Assessing remedial success solely based on measuring contaminant concentrations in groundwater prior, during and after remediation do often not account for complex hydrogeological settings. In particular in fractured bedrock traditional groundwater sampling may lead to either under or overestimating remedial success. Using co...
Article
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Aquifers are ubiquitous, and their water is easy to obtain with low extraction costs. On many occasions, these characteristics lead to overexploitation due to important water level declines, reduction of river base flows, enhanced seawater intrusion, and wetland affection. The forecasted increase in water demands and global warming will impact the...
Article
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The organized hydrogeological investigations in Albania started in 1959, while general hydrogeological prospecting started there in 1963 and finished in 1974. One of the hydrogeological prospecting main goals was the compilation of the hydrogeological map of Albania at a scale of 1:200,000. Hydrogeological maps may differ in content, representation...