This study involved the application of geospatial techniques to delineate groundwater potential zones in a hard rock terrain of Oban Massif and environs. This goal was achieved using satellite remote sensing imagery and geographic information system techniques. The method mapped groundwater-controlling factors such as geology, geomorphology, lineament density, slope, land use and land cover and drainage

Hydrological process is very complex, so it is difficult for one copula to describe dependence patterns between two hydrological variables comprehensively (dependence pattern refers to the correlation and tail dependence between two random variables). This paper applied a linear weighted function of Gumbel copula, Clayton copula and Frank copula (coupled copula) to study dependence patterns between

The present study was designed to explore the possibility of roadside pollution screening using magnetic properties of topsoil samples in Daejeon, South Korea. Low-field magnetic susceptibility, frequency dependence of magnetic susceptibility, susceptibility of anhysteretic remanent magnetization, isothermal remanent magnetization (IRM) acquisition and demagnetization, back-field IRM treatment, and

Macroscale fracture of rocks is a progressive process consisting of the initiation, propagation and coalescence of numerous microcracks, but the micro- and meso-crack propagation process and the accuracy parameters of multiscale crack evolution timely have not been studied systematically. This study investigates the micro- and meso-damage evolution characteristics based on in-situ scanning electron

Oxygen isotopes, major and minor chemical compositions of 23 groundwater and 5 river water samples from the southern part of Nanto City were analyzed. From these results, the possibility of groundwater heat utilization was discussed. The water temperatures fluctuated between summer and winter. The groundwater in this area nearby Sho River is strongly influenced by river water infiltration and most

Bottom sediments play a fundamental role in the eutrophication process because they are one of the most active compartments in the biogeochemical cycle of nutrients. In Ushuaia city, Tierra del Fuego, Argentina, sewage effluents have been discharged into natural watercourses without treatment for many years. Organic matter has been introduced until 2016 when improvements in sewage infrastructure were

This study investigates changes in channel morphology of the Cetina River over the last 130 years affected by climate changes and various human impacts. A detailed digitalisation and analysis of the channel features was performed by using historical maps from the 1880s, archival aerial images from the 1950/60s, and contemporary orthophoto maps from the 2010s. According to these sources, we defined

The current research plan was designed to investigate occurrence, source origin and association of heavy metals (HMs) in multi-matrix (road dust, soil and vegetation) samples along elevation gradients of Himalayan foothill, Pakistan. Therefore for this purpose, road dust (n = 28), soil (n = 42) and vegetation (n = 125) samples along different elevation gradients were collected and analyzed for HMs

Thiencarbazone-methyl, a triazole herbicide was assessed for its environmental fate by carefully imitating and analyzing the natural pedosphere through diverse experiments involving adsorption, desorption, hydrolysis, photo-degradation and degradation in ten distinct soils. Sorption experiments were performed through batch equilibrium method. Soils’ physicochemical properties highly influenced the

In this study, possibility of geological storage of CO2 into an Iranian hydrocarbon reservoir is investigated as a method of enhanced oil recovery (EOR). For this purpose, a stainless steel sand packed model, containing rock and brine, was used to simulate the reservoir condition and CO2 injection. Subsequently, CO2–rock–brine interactions (dissolution and deposition of minerals) due to CO2 injection

Protection of groundwater quality from various natural and anthropogenic forces is a prime concern in Bangladesh. In this study, we utilized groundwater geochemistry of shallow and deeper aquifers to investigate the hydrogeochemical processes controlling water quality, and the sources and mechanism of Arsenic (As) release to water and associated human health risks in the Faridpur district, Bangladesh

The landslide is a downward movement of soil and rock, and one of the most destructive geo-hazards that causes losses in lives, environment, and economy all over the world. Landslide susceptibility mapping is a scientific method to evaluate the landslide probability zones and causative factors. The main objective of the present study was to introduce ensemble landslide susceptibility models which are

Our co-seismic GRACE gravity data (Level 2 ‘RL_05’ data product “GX-OG-_2-GSM) for Sumatra earthquake 2004 is obtained by differencing monthly gravity field average for November 2004 from that of January 2005 and band-pass filtering (17–30, degrees and orders) in spectral domain. Here we propose an 11-layered 3-D thrust fault gravity model based on several co-seismic rupture models in literature. Previously

Mine waste dumps are lasting landscape elements of mining impact areas, and several aspects of their negative influence on the environment are currently being considered. The presence of coal substances in the dump mass often leads to fire hazards. Therefore, monitoring plays an important role in preventing fires in spoil tips. This study presents a modern method for monitoring fire hazards in coal

The steppe located in the middle Inner Mongolia Plateau (IMP) has scarce water resources and fragile ecosystems and has an arid-semiarid monsoon characterized by low and uneven seasonal precipitation and high evaporation. Until now, problems relating to the hydrologic processes in the area remain poorly understood, and thus strategies for the exploitation and utilization of the area’s local water resource

The behavior of nitrate in shallow aquifers depends on several factors, such as geomorphology, soil type, thickness of the vadose zone, and its lithology, sampling period, among others. In the free aquifer of the basin of the La Ballenera creek in southeastern of Buenos Aires province, Argentina, nitrate varies in a range between 4 and 250 mg/L in samples taken in spring and winter. This basin has

The Aral Sea was the fourth largest lake in the world before 1960. Reduction of water resources and the growth of water intake and reservoirs in the source rivers have severely desiccated the Aral Sea. This study aimed to model the spatiotemporal and surface temperature changes of the Aral Sea in the period 1986–2017 using the Landsat multi-temporal satellite data and remote sensing techniques. Since

Response time of the water table (WT) to rainfall is a relevant parameter for optimal management of water resources in plains. This study explores the response time of WT to climatological variability. WT dynamics were analyzed for a period of 10 years in 7 stations located in the Argentinean Pampean Region: Laboulaye (LAB), Arias, General Pico (GP), Azul, Dolores (DOL), Junín and Barrow. Statistical

Climate change may affect soil fertility because it can alter various soil physicochemical characteristics through different mechanisms. Currently, a better understanding of its effect on soil physicochemical characteristics is required for sustainable soil management. Therefore, the main purposes of this study were to assess the effect of climate change on key soil physicochemical characteristics

The aim of the present study was to produce an earthflow susceptibility map for the city center and environs of the province of Rize located at the Northeastern part of Turkey. The study area is the rainiest region of Turkey, and due to the triggering effect of precipitation earthflows are frequently observed in and around the study area. Besides this point, weathered rock units and steep topography

The Portoviejo city, located in the central part of the Ecuadorian Pacific Coast (province of Manabí), was severely affected during the Pedernales Mw 7.8 earthquake of April 16, 2016, accompanied by coseismic liquefaction phenomena that induced processes of ground subsidence, lateral spreading, sinkhole, and sand boils. The present study proposes the detection and delimitation of the areas affected

The ever-increasing land reclamations along the Tarim River caused by human activities have resulted in a series of potential eco-environmental risks. This paper reveals the spatial and temporal dynamics of reclamation and the associated potential eco-environmental risks. The results indicated that 70.30% of grasslands, 9.80% of woodlands and 16.04% of bare land were reclaimed during 1990–2015. Majority

Jialing River is one of the largest tributaries of the Yangtze River and the tributary with the most extensive drainage area among all the tributaries. In recent years, it has suffered severe heavy metal pollution. To study the spatial distribution, sediment fractions, sources and risks posed by Cd, Hg, Cu, Pb and Zn downstream of the Jialing River, 10 sampling sites were selected along the river,

A creep model based on the damage mechanics is proposed in this study to describe the three-stage creep deformation of rocks under conventional triaxial loading conditions. The proposed model has a simple form as it is based on the mechanism which assumes that the time-dependent creep behavior of rocks is solely described by the damage evolution. Verification of the proposed model against the creep

Fuel spills are a very common occurrence globally and the traditional methods of identification and remediation can be expensive, hazardous, and time consuming. Hyperspectral remote sensing is a technology that utilizes images from a variety of air vehicles or satellites where each pixel in the image contains a quantitative reflected light spectrum that is a function of the materials in view. Laboratory

Coal is the most important primary energy in China. Although the proportion of coal in China's total energy consumption continues to decline it will still be the main energy in China for a long time in the future. As the largest contributor to China's greenhouse gas emissions, the energy conservation and emission reduction of coal industry will be the most critical step for China to cope with global

Vine copulas provide a great deal of flexibility in modeling complex dependence structures between the variables. In spite of its importance, very limited attention has been paid in hydrology field. In the present study, multivariate modelling of flood characteristics was performed using traditional Archimedean and Elliptical and Vine copulas. In the first phase, flood characteristics [peak (Q), volume

The relationship between radon gas and earthquake behavior is widely researched by investigating 222Rn (Radon-222) in air, soil, and water. This study is aimed at proving that 222Rn concentration in rain water and in the movement of rain systems will give an indication of impending earthquakes. The study was conducted in predetermined areas in the west of Anatolia. It is found that 222Rn in rain water

Semarang City, Indonesia is plagued by a combination of widespread flooding during the wet season and a lack of fresh (potable) water during the dry season, the latter related to saltwater intrusion. The East Flood Canal (Banjir Kanal Timur = BKT) was built to address these problems by improving runoff (drainage) and increasing groundwater recharge. This research was conducted to reconstruct the history

Management plans, actions and strategies for preventing and mitigating natural disasters require detailed information on natural and human-induced geohazards for the area under evaluation. Karst areas are particularly prone to instability due to the natural fragility of their environment but are also vulnerable due to human activity. In-depth studies of the factors controlling mass movement processes

Sinkholes are a common geological hazard around the world. However, it is difficult to carry out the associated indoor simulation experiments because of the complicated factors involved. Our previous research showed that sinkholes in the aerated zone caused by soil disintegration exhibit accurate critical conditions. Therefore, the kind of sinkhole formation is simulated in the paper. Before the simulate

Brunei Bay, Borneo is a unique water ecosystem which has been conserved a wide range of wildlife. Hitherto, the rapidly increase of human activities has been denoted surround and within the bay ecosystem. Four sediment cores has been collected within Brunei Bay with the purpose of assessing metal’s pollution level and geochemical characteristics of the cores. Metals total concentration, sediment physico-chemical

The presence of pharmaceutical compounds, particularly, paracetamol in water is of significant environmental concern due to their undesirable effects on aquatic organisms and poor biodegradability. The present work investigated the efficient degradation of paracetamol in water using sonophotocatalytic process in the presence of iron (Fe)-doped titanium dioxide (TiO2) nanoparticles. The effects of Fe

The increasing trend on water use for hydraulic fracturing (HF) in multiple plays across the U.S. has raised the need to improve the HF water management model. Such approaches require good-quality datasets, particularly in water-stressed regions. In this work, we presented a QA/QC framework for HF data using an outlier detection methodology based on five univariate techniques: two interquartile ranges

The objective of this paper was to determine background values (BV) and anomalous values (AV) of U and Th in groundwater and to establish hydrogeochemical conditions which lead to the elevated concentrations of these elements in groundwater. The methodology included planning and collecting of water samples, laboratory work, and assessment of BV and AV concentrations in accordance with the dataset distribution

In this study, the groundwater parameters including electrical conductivity (EC), salinity, total dissolved solids (TDS) and groundwater level (GWL) for a 15-year time series (from 2002 to 2017) of the Mighan Plain, located in Markazi Province, Iran, were simulated using a hybrid meta heuristic artificial intelligence (AI) model called “wavelet self-adaptive extreme learning machine” (WSAELM) for the

Urban flooding is increasingly pervasive, with the decreasing water area in cities and the dreadful impact on people. Therefore, it is necessary to carry out a quantitative evaluation of the area of urban water and analyze the threshold of the reasonable water ratio under different drainage scenarios. In this research, simulations were performed by using the Personal Computer Storm Water Management

The chemical compositions of waters from the upper basin of the Ctalamochita River draining the Córdoba Pampean Ranges were analyzed to determine the chemical signature related to different forcings, geochemical processes, and solutes sources. The catchment has four sub-basins: Santa Rosa River, Grande River, Quillinzo River and De Los Sauces River. Most of the riverine chemical compositions are dominated

Freshwater quality is deteriorating worldwide. In populated areas, urban pollution is the main pressure on surface continental waters, but intensive wastewater treatment is costly. Setting standards for treatment of wastewater before discharge is a major policy instrument for water authorities, balancing environmental gains and operational costs. Discharge permits usually define concentration limits

3D combined models in geosciences matched a good framework for solving salinity mapping uncertainty. However, geoelectrical sounding were used for groundwater salinity exploration, geological and geophysical log analysis at large scale of the Hammam Bouhadjar aquifer situated in the Northern West of Algeria. Our work was apprehended to restructure in 3D environment the salinity mapping under the implicit

The parameter b of the unified strength theory was set to depict the contribution of the intermediate principal stress on the failure of materials. A large number of true triaxial tests were carried out to determine the values and variation in the parameter b for loess, with which the effect of b on the estimation of the stability for a typical loess slope was then studied. The unified strength theory

Land use and land cover (LULC) change is one of the key driving elements responsible for altering the hydrology of a watershed. In this study, we investigated the spatio-temporal LULC changes between 2001 and 2018 and their impacts on the water balance of the Jhelum River Basin. The Soil and Water Assessment Tool (SWAT) was used to analyze the impacts on water yield (WY) and evapotranspiration (ET)

Soil liquefaction is one of recognized nonlinear devastating types of ground failures associated with earthquakes. The analyses frameworks for this phenomenon have been addressed using different methods and correlated triggering factors in case histories. In the current paper, a hybrid model using imperialistic competitive metaheuristic algorithm (ICA) incorporated with multi-objective generalized

The study aims to develop a hybrid model approach for the assessment of the landslide (LS) risk qualitatively. It involves multiple consecutive stages of statistical prediction, machine learning, and mapping in the GIS environment. At the first stage, a landslide susceptibility map has been developed using the analytic hierarchy process (AHP) algorithm, coupled with the binary logistic regression (BLR)

Water is a strategic resource for both socio-economic development and human life. The current study has been carried out for spatio-temporal change detection of surface water bodies during winter period using hybrid modelling approach. The study area has fallen in the northern part of Bangladesh and is locally called Chalan Beel with 5 million of in habitants, a prominent intensive crop production

Phytosanitary treatments using Bordeaux mixture or zinc (Zn) fungicides are often used in vineyards, which increase soil copper (Cu) and Zn contents. In this study, the accumulation and distribution of Cu and Zn fractions (water soluble, exchangeable, oxidic, organic and residual fractions) was evaluated along a Regosol profile cultivated with vine since 1890 and treated with Bordeaux mixture. Copper

In this study, we combine the use of Metal/Metal ratios of 134 sediment samples with multivariate analysis to provide the first geochemical mapping of a large subtropical estuary influenced by one of the largest grain-shipping terminals of South America. Together with grain-size data, the results allowed us to efficiently map the different sectors of the estuarine complex, defining its geochemical

Changes in velocity and temperature of ice are the internal driving factors accelerating glacial regression under the condition of climatic warming. To evaluate glacial response to climate from the perspective of the internal driving forces of glaciers, we used a two-dimensional force balance and energy balance model to simulate the ice velocity and temperature of the No. 8 glacier (H8) in Tianshan

The valley of Mexicali is one of the most important agricultural areas in the northwest of Mexico. Rapid urbanization has meant that parts of the agricultural channels and drains now lie within the urban area. To evaluate the concentrations of heavy metals in urban drain sediments, thirty-one samples were collected in the Mexicali urban area. Mean concentrations of Cd, Cu, Cr, Fe, Ni, Pb and Zn were

To investigate the vertical changes of toxic elements in Jurassic sediments, sampling was performed in four sites. Samples were collected from sandstones and mudstones/marls and analyzed for some toxic elements (Cu, Pb, Zn, As, Ni and V). Results exhibited that the sediment grain size played a significant role in controlling the concentrations of the toxic elements in the sediments. The mean toxic

The waste glass is one of the huge volume construction and demolition (C&D) debris and using it in the construction, significantly reduces the area required for the storage and contributes to the conservation of natural resources while reducing the carbon footprint. In the light of these data, the answer to the question of whether glass powder could be considered as a stabilizing additive with sea

The pump-and-treat (P&T) method is a common remediation approach that is used to mitigate occurrences of hydrocarbon contamination. In a well-studied site that had been contaminated by a large volume of jet fuel, continuous monitoring of the water table and floating phase thickness revealed the most significant process governing the effectiveness of the site’s active remediation system. The floating

One of the major issues in the safety of a deep geological repository (DGR) for radioactive waste is the migration of hydrogen (H2) resulting mainly from anaerobic metal corrosion and from water and waste radiolysis. The migration of hydrogen may have adverse effects on the mechanics of the host rock and of the engineered barrier systems within a DGR. Some studies pointed out involvement of hydrogen

Ha Long Bay is an attractive landscape and a center of dynamic economic activity; however, it is subject to negative impacts from tourism, activity in its harbor, mining, industry, and urbanization, which is evidenced by the presence of pollutants, including heavy metals, in surface sediment at the bay. To ascertain the extent of the anthropogenic impact, 48 surface sediment samples were collected

Groundwater contamination is a significant problem in Mexico and around the world. It can be influenced by both natural and anthropogenic factors. In Linares, Mexico, we identified several wells used to cover the water demand for different human activities with nearby potential sources of contamination, including urban, agricultural, and livestock activities, electrical and electronic waste disposal

Methane contamination of drinking water resources is one of the major concerns associated with unconventional gas development. This study assesses the potential contamination of shallow groundwater via methane migration from a leaky natural gas well through overburden rocks, following hydraulic fracturing. A two-dimensional, two-phase, two-component numerical model is employed to simulate methane and

The water quality of the rainwater is obviously different from that of the groundwater after it reaches the surface and passes through the vadose zone. This study aims to further evaluate and analyze how soil CO2 changes under natural conditions, to provide a theoretical background for the establishment of CO2 geological storage, and to provide a basis for the detection of CO2 leakage in order to provide

In the framework of a Spanish project focused on carbon capture and storage technologies, the Gañuelas-Mazarrón Tertiary Basin (SE Spain) was studied as a natural analogue of a CO2 reservoir affected by anthropogenic leakages. It has been accepted that the main objective of natural analogue studies is to predict the long-term performance of a natural CO2 reservoir to be extrapolated to the operation

This study was conducted to assess the suitability of groundwater resources for drinking and irrigating purposes in Hamedan–Bahar Plain, west of Iran as a major agricultural district, in the spring and summer of 2018. In so doing, a total of 60 water specimens were collected from the semi-deep water wells of the study area with an average depth of 50–75 m and then the hydrogeochemical characteristics

Solid backfill coal mining technology can be safely and efficiently used to exploit coal resources under aquifers, without causing harm to the water resources and the environment. Nevertheless, the mechanism of fracture development and seepage channel or pathway control in the key aquiclude strata (KAS) in backfill coal mining under fluid–solid coupling have not been studied. Based on the similarity