Groundwater serves as one of the crucial natural resources in the safety and sustainable development of Beijing economy. Due to the fact that Beijing is one of the megacities with groundwater as the main water source, it abstracts two-thirds of the city’s water supply from groundwater. Meanwhile, the groundwater aquifer storage depletion has been larger than 1.04 × 1010 m3 during the past decades,

We applied a hybrid-dimensional flow model to pressure transients recorded during pumping experiments conducted at the Reiche Zeche underground research laboratory to study the opening behavior of fractures due to fluid injection. Two distinct types of pressure responses to flow-rate steps were identified that represent radial-symmetric and plane-axisymmetric flow regimes from a conventional pressure-diffusion

The present study was carried out to evaluate performance of Agricultural Policy Environmental eXtender (APEX) integrated with GIS as ArcAPEX model in simulating surface runoff, sediment and nutrients loss from a watershed located in lesser Himalayan region in Uttarakhand state, India. Daily surface runoff, sediment and nutrient loss data measured at watershed level for the year 2010–2011. Measurement

The study examined the reliability of injection wells (IWs) as a control measure of flood and flood-related activities considering the relevance and the role of groundwater to human and industrial activities. Seventeen Boreholes (BHs) including one as control, and three IWs in Government Reservation Area (GRA), Benin Metropolitan City (BMC) were used for the study. Groundwater flow and geospatial maps

Coastal regions are quite populous, causing coastal aquifers to be overexploited, due to which contamination of these aquifers is observed. The municipality of Belém, located on the eastern edge of the Amazon Forest, is severely deficient with respect to sanitation services, resulting in contamination by domestic wastewater becoming a widespread problem. Furthermore, groundwater overexploitation induces

The invasion created by drilling fluids around borehole walls creates considerable variations on mechanical and physical properties of both rock materials and discontinuities. However, up to date there is no comprehensive study has been performed on the variation of fracture toughness values of rocks under drilling fluid saturation with different compositions. By considering this deficiency, the variation

The low-lying coastal basins of Ravenna (Italy) are at or below mean sea level and currently undergoing land subsidence, which exposes the basins to frequent inundation and groundwater and soil salinization. The surface water drainage becomes necessary to lower the water table head and further prevent flooding and waterlogging. The study examines the evolution of drainage apropos to climate change

The dynamic variations of groundwater have been extensively studied, but there are few studies on the long-term time–frequency features of groundwater dynamic variations. Here we report the dynamic characteristics of the groundwater level and dissolved radon concentration based on the long-term (January 1988–March 2018) daily observation records and regional precipitation data in the Tengchong area

This study aims to investigate the combined effects of temperature and precipitation on the hydrological processes in a watershed with intensive agricultural land uses during the spring snowmelt period. Temperature, precipitation, soil moisture, frozen soil depth, and discharge were monitored during the freezing and thawing periods in 2014, 2015, and 2016 within the 75 km2 agricultural Heidingzi watershed

The sudden outburst of coal and gas is a complex and dynamic incident in the underground coal mines, resulting in the release of thousands of tons of coal and large amounts of gas into the working face within a short time. Due to a rise in the number of exploitations and the depth of extractions, the intensity, and frequency of explosions have increased in recent years. Consequently, these explosions

This study focuses on interpreting Bouguer gravity anomalies by two-sided fault structures. Faults have prime concerns for hazardous zones, mineralized areas, and hydrocarbon systems. The proposed scheme is done through the following steps: first, it utilizes the residual moving average anomalies estimated from the Bouguer gravity anomalies using several window lengths. Second, each residual anomaly

Potential toxic element accumulation in soils and plants is one of the leading environmental problems in recent years. In many countries, mining enterprises are generally abandoned for reasons such as increasing costs, depleted reserves, and changes in ore quality. The negative effects on the environment during or as a result of these activities are known. The focus is on investigating the Hg concentration

The accurate modeling of landslide risk is essential pre-requisite for the development of reliable landslide control and mitigation strategies. However, landslide risk depends on the poorly known environmental and socio-economic factors for regional patterns of landslide occurrence probability and vulnerability, which constitute still a matter of research. Here, a hybrid model is described that couples

This geochemical study explored the distribution of potentially toxic elements (PTEs), such as As, Cd, Co, Cr, Cu, Ni, Pb, Sb, Tl, U, and Zn, along soil profiles of a metallurgical and industrial area in Kosovo, with the aim of assessing geochemical background and contamination threshold of PTEs in soil, and defining surface and vertical level and extent of soil contamination by PTEs. The geochemical

Despite the widespread application of landslide susceptibility analyses, there is hardly any information about whether or not the occurrence of recent landslide events was correctly predicted by the relevant susceptibility maps. Hence, the objective of this study is to evaluate four landslide susceptibility maps retrospectively in a landslide-prone area of the Swabian Alb (Germany). The predictive

The three-dimensional swelling pressure tests on the compacted Gaomiaozi (GMZ) bentonite–sand mixtures are carried out under different dry densities, sand contents and temperatures. The results show that anisotropy of swelling pressure is observed in the mixtures and the vertical swelling pressure is greater than the horizontal swelling pressure in the range of test conditions (dry densities of 1.6

The joint roughness coefficient (JRC) is the key factor in predicting the peak shear strength of a rock joint. In this paper, we present a new approach for quantitatively calculating the JRC of two-dimensional rock joints. First, the two dimensionless indexes of cumulative relative relief amplitude (CRRA) and weighted average gradient (WAG) are defined to represent the morphology characteristics of

Knowledge of porous media structure is an essential part of the hydrodynamic investigation of fluid flow in porous media. To study soil behavior (as a granular porous media) and water and contaminant movement in the vadose zone, appropriate estimation of soil water retention curve (SWRC) and soil hydraulic conductivity curve (SHCC) has a pivotal role and is one of the most challenging topics for researchers

In order to assess the relationship between the groundwater mineralization of Roc-Blanc watershed (Morocco), lithology, fracturation and abandoned mine tailings in the area, a multidisciplinary work was conducted by using the geochemical assessment approaches. Geological and hydrochemical results showed the following: (i) the main direction of fractures and the groundwater flow investigations reveal

The aim of this work is to present the hydrochemical mechanisms describing the system of the Euphrates River before and after mixing with groundwater from the springs of Hijlan (western Iraq). Continuously, the data generated from these springs water have been adapted to provide an updated assessment for future water therapeutic purposes. Physicochemical characteristics of water in the mixing plume

Bed sills are a kind of grade control structure built at the same level as the river bed to protect it against erosion and to reduce the longitudinal slope of the channel. The aim of the present research was to determine the optimal dimensions of the structure by devising a new methodology to minimize cost and maximize stability, based on the optimization model of the multi-objective non-dominated

A large landslide occurred on May 2, 2014, on the south bank of the Yellow River in Huaipa village, Mianchi County, Henan Province, China. The total volume of the slide was about 4 million m3. The landslide caused serious damage to the water-conveying pipeline at the foot of the slope, which was for water supply from the Yellow River to Manchi County and Yima City. After the event, the engineering

Upper Cretaceous sedimentary rocks are widely exposed around Trabzon, Giresun and Gümüşhane in the eastern Pontides. The sedimentary rocks are mainly composed of sandstones and marls, and the thicknesses of these rocks range from 170 to 400 m. This paper focused on Late Cretaceous sandstones of Trabzon, Giresun and Gümüşhane regions to identify the concentrations, sources, deposition environment and

Shale formations suffer dynamic loading and unloading stresses during hydraulic fracturing processes that cause cracks to open and shear-slip to develop, while simultaneously producing microseismicity. Incremental cyclic loading tests were conducted on shale specimens using various stress levels and measured via real-time acoustic emission (AE) monitoring at the laboratory scale because AE parameters

This study is focused on the metals’ pollution level in sediment core collected from Manora Picnic Point of Karachi coastal area Pakistan. The sediment was categorized in terms of pH, particle size, total organic carbon (TOC), calcium carbonate, and heavy metals, besides the determining the mineralogy composition of sediment. Metals were determined using proton-induced X-ray emission spectroscopy (PIXE)

Knowing the water retention properties of soil can help with predicting water infiltration into the soil, the potential for runoff generation and sediment yield, and ultimately, better management of natural areas. The purpose of this study was to investigate the characteristics of the soil water retention curve (SWRC) and its effects on infiltration rate and runoff generation. For this purpose, an

Cheongwon is well-known in South Korea for the abnormally high aqueous concentrations of U and Rn in the underlying Jurassic granite aquifer. This study reports on the chemistry and texture of a new U-host mineral to indicate the effective source of U in the granite aquifer, and discusses the implications of the occurrence of U near groundwater monitoring wells. To investigate the internal fabric and

Application of the image processing techniques (IPT) to identify rock mass geometry provides more fast information about discontinuity properties used in geo-engineering characteristics. In this regard, the field survey can be improved using IPT. This study has utilised the IPT to identify the discontinuity and block volume characteristics in a discontinuous rock mass. For this purpose, a visual evaluation

Many buried karst areas in Iran, and in other parts of the world have not yet been mapped using detailed geological or geophysical studies to delineate susceptibility to sinkhole development. The purpose of this paper is to investigate the possibility of using the results of hydrogeochemical analysis with routine measurements of physicochemical parameters to evaluate and detect areas prone to sinkhole

The global warming induced by the emission of greenhouse gases, especially the carbon dioxide, has become the global climate and environmental issues. China has been working in the CO2 emission reduction and carbon sinks with the purpose of becoming the carbon-neutral country by 2060. The CO2 capture, utilization and storage (CCUS) technologies and the reforestation technology represented by the Conversion

Destructive mining operations are affecting large areas of natural ecosystems, especially in arid lands. The present study aims at investigating the impact of iron mine exploitation on vegetation and soil in Nodoushan (Yazd province, central Iran). Based on the dominant wind, topography, slope, vegetation and soil of the area, soil and vegetation parameters close to the mine were recorded and analyzed

As a special soil widely existing in world, loess engineering properties are often disturbed by water and salt. Hence, the influence of water content and salt content on the conductivity properties of loess was analyzed using the electrical resistivity of loess obtained by LCR digital bridge tester in this study. Loess electrical resistivity with different water content (8–20%) and NaCl content (0–6%)

Estimation of aquifer properties allows quantitative prediction of the hydraulic response of the aquifer to recharge and discharge. However, conventional methods such as pumping tests, among other limitations, are costly and time-consuming. Thus, this study aims to estimate hydraulic properties of basement aquifers of the Idi-Ishin area of Ibadan, southwest Nigeria using an indirect electrical resistivity

The main objective of this paper was to find a relation between the velocity propagation of seismic wave and the density of the historical masonry. To obtain this information, a testing program was performed to measure the velocity of the waves in samples of a laboratory of different types of masonry and in situ from structural elements of a scale model church. According to the velocities measured

Studying the spatial distribution characteristics of groundwater quality in the coastal plain and its relationship with land use and seawater intrusion is of great significance for maintaining the stability of the coastal groundwater environment, rationally using land and preventing seawater intrusion in international community. Taking Longkou, Shandong Province as an example, through field surveys

The Datong region of China suffers from severe ground fissure (GF) disasters. The Jichechang ground fissure (JGF) is typical among the GFs in Datong and is the most active. To provide scientific guidance for disaster mitigation, understanding the mechanisms governing GF activity in Datong needs to be improved. Here, long-term monitoring data (> 10 years) for the JGF are used to study the characteristics

In northeastern Alberta, oil sands deposits are mined and processed to extract bitumen, which is then converted to synthetic crude oil, a waste stream of this extraction process is fluid fine tailings. Seepage and leaching from these tailings have the potential to negatively impact surface and groundwater quality. This research focuses on improving and understanding dissolved ions that may seep from

The application of thin-section petrography, field emission scanning electron microscopy and energy dispersive X-ray analysis (FESEM–EDX), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermo-analysis, and laser Raman spectral analysis methods can be combined to characterize iron-ores and distinguish clay minerals in alluvial soils. The integrated methodology developed for

The geotechnical characteristics of hydrocarbon-contaminated soils have been an issue of major concern for its inevitable impacts on our surroundings from engineering as well as environmental viewpoints. The impact of hydrocarbon on various geotechnical properties of diversified soils have been reported in the literature. Nevertheless, shear wave velocity (Vs) of hydrocarbon-contaminated soils has

Kathmandu Valley in Nepal is built on the soft soil deposits of lacustrine origin. The structural damage record in the valley during the past earthquakes indicates that resonance effect between the ground and structures plays an important role in intensifying the damage to the structures. Especially, in soft soil deposits, even a small-scale earthquake generates long-period shaking of the ground for

Every year many earthquakes occurs around the world and some of them are highly destructive. Therefore, the study of the vulnerable areas to the earthquakes seems crucial. Current paper presents a novel method for the assessment of areas, which are prone to the earthquakes, using relative tectonic activity index (IAT). IAT is calculated via six morphometric indices, including Asymmetry factor, Mountain

The paper aims to determine the most significant physicochemical indicators of the effects that a lined landfill in southern Poland has had on groundwater quality. The results of the tests of groundwater and leachate water from the landfill for the period 2009 to 2016 were subjected to a detailed statistical analysis based on the 10 physicochemical parameters. A factor analysis was conducted considering

The island of Lefkada, Greece periodically suffered environmental and structural damages induced by earthquakes. During the twenty-first century, two moderate events of magnitude M > 6 occurred in 2003 and 2015 (M6.2 and M6.5, respectively). The dominant type of the earthquake-induced environmental failures was rock falls and slides that were widespread at the western part of the island. The goal of

In the development and utilization process of geothermal energy, the thermal conductivity of the rock plays a key role in engineering design. Potentials for further improvement of the geothermal engineering design lie in the improvement of the accuracy of thermal conductivity model. For the prediction of the thermal conductivity of rocks, emerging extreme learning machine (ELM) methods could prove

Brahma Bahtar area in Lesser Himalayas was assessed using an integrated approach of geophysical and hydrogeological investigations. The vertical electrical sounding (VES) and hydrologer were employed for the aquifer delineation and vulnerability. The VES results and borehole lithologies reveal alluvial and rock aquifer system. The alluvial aquifer was unconfined to semi-confined and comprised of inter-layered

This study evaluated the spatial distribution of groundwater potential zones in Kabul Province, Afghanistan using the geospatial multi-influencing factor approach. The influencing parameters employed for the assessment of groundwater potential zones were land slope, geology, soil type, land use/land cover, lineament density, rainfall, and drainage density. The subclasses within each influencing parameter

Ingesting crop grains contaminated with heavy metals is the most urgent problem related to food security and human health. Additionally, an overall analysis of heavy metal concentrations in different crop organs has guiding significance for ensuring food safety production. In this study, the concentrations of Cr, Ni, Cu, Zn, As, Cd, Hg, and Pb in soil, corn and soybean were determined in an agricultural

A precise, climate-resilient rationing/budgeting of groundwater resources is essential for planning its judicious utilization and development. This study undertakes a pioneering scientific assessment for incorporating the ArcGIS integrated with GEC-2015 guidelines into groundwater budgeting computations for the mining environ. The dynamic groundwater resource has been computed for a 10 km buffer study

The main objective of this research was to evaluate the possible impact of climate change on groundwater levels in the Tasuj Plain, Iran. To accomplish this, the values of precipitation for a near future period was projected through four general circulation models (GCM). Then, the groundwater level variations through the genetic expression programming (GEP) model were evaluated. The projection results

Nowadays, the solid backfilling mining technology has been valued as an important technical mean of green mining. However, due to the complicated geological conditions, effective and efficient methods to monitor the deformation of the solid backfilling baby, are lacking in solid backfilling mining. Among various methods proposed by different scholars, an electrical resistivity (ER) method is one of

Manual and high-frequency measurements (n = 535) of chloride (Cl−) along a low-order stream in an urban–agricultural watershed (8% urban, 87% agriculture) were conducted to investigate the importance of stormflow to Cl− transport. Sampling was conducted from February 2018 to February 2019; manual sampling occurred weekly, while stormflows were sampled at high frequency. Total Cl− export was nearly

Landslides are a serious concern in the Western and Eastern Ghats of India. They impede the social and economic development of the region. Landslides can manifest in various forms like translational slides, rock falls, debris flow, etc. Each type of landslide has a set of characteristic conditioning factors and are required to be modelled separately. This study attempts to develop an integrated model

The retreating behavior of glaciers observed in most of the Hindu Kush–Karakoram–Himalaya (HKH) region has given rise to the formation and expansion of numerous glacial lakes in the region. The lakes expansion under changing climate usually poses high risk of glacial lake outburst flood (GLOF) hazard for the downstream communities. In the present study, the risk of glacial lake outburst flood was investigated

In recent years, several soft computing models have been proposed to estimate the elastic modulus of magmatic rocks. However, there are lacks in models that consider the different weathering degrees in determining the elastic modulus of rocks. In the literature, mechanical properties are widely used as inputs in predictive models for weathered rocks; however, there are only a few models that use index

Snowmelt infiltration is one of the key factors that trigger landslides. This study focused on characterization of snowmelt infiltration in the Shimekake landslide block in northeastern Japan via long-term monitoring of major ion concentrations and stable isotope ratios of groundwater and precipitation. Results revealed seasonal variations of the d-excess values of precipitation, which were significantly

The present study aims at deciphering the morphometric neotectonic features in the badland affected part of the Mandakini River watershed of Chitrakoot, India. The study attempts to decipher the relative time sequencing of the morphotectonic events based on certain assumptions. Badlands are essentially erosive systems that result due to some critical combination of multiple factors such as a change

This study was developed with the aim of determining the activity concentration of 226Ra, 228Ra, 210Pb and 40K in samples of technosols (soils formed by the deposition of tailings from the dam rupture on the banks of rivers and in riverside regions) and in natural soils from the Mariana region in Minas Gerais, after the Mariana tragedy, which is considered the biggest accident in terms of volume of

In the last few decades, the economic activities have been growing fast in slope land of Taiwan. To investigate the effect of slope disturbance by slope utilization on the landslide potential, this study employed the concepts of regional carrying capacity, natural environment, and slope utilization to establish a hazard potential index based on slope land disturbance (IHSD) to define the extent of

Landslide is one of the most common geological hazards, which causes a large number of property damage and loss of life in China every year. This case study was a 330-kV transmission line project located in Longnan City, Gansu Province, China, which is known as an area prone to landslides. A hybrid model of fractal theory-information value-random forests algorithm (FT-IV-RF) was proposed to evaluate

Located in an arid and semi-arid region, the northern Ordos Basin is one of the key coal mining areas of China. The Zhiluo (J2z) sandstone aquifers, which overlay the Yan’an (J2y) coal seam layer, are a major source of drinking water. However, the hydrochemical evolution and possible impacts of coal mining on pollution of J2z groundwater over recent decades, and the water inrush hazard it presents