Search results: 36,906 results (approx.)

1. Contaminant migration and the retention behavior of a laterite-bentonite mixture engineered barrier in a landfill.

Groundwater pollution has become increasingly severe in recent years, particularly owing to leachate leakage in landfills. In this study, the migration of Cu2+ in a landfill and the retention behavior of a compacted laterite-bentonite engineered barrier system toward the contaminant were analyzed...

Author(s) : He Yong; Hu GuAng; Wu DongYu; Zhu KaoFei; Zhang KeNeng

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Journal of Environmental Management 2022 Vol.304 ref.61

2. Impact of river fluvial processes on arsenic enrichment in Mid Gangetic Plains: the coining of arsenic confirming pollution markers.

The present study traces the geochemical occurrence of arsenic and heavy metals along the active oxbow formations of river Ganga in MGP. A total of 31 groundwater samples were collected, specifically in close proximity to the river profile section, to understand the high spatial enrichment pattern...

Author(s) : Ashwin Singh; Patel, A. K.; Manish Kumar

Publisher : Elsevier Inc, Orlando, USA

Journal article : Environmental Research 2022 Vol.203 ref.45

3. Petrochemical characteristics and geological significance of the tephra buried under peat deposits: constrains on the Changbaishan Millennium eruption.

Changbaishan Tianchi volcano is one of the most famous active volcanoes in Northeast Asia. Its Millennium eruption (ME, 946-947 CE) is considered to be one of the largest explosive eruptions over the past 2000 years, which had produced widely distributed tephra layer across Northeast Asia. However, ...

Author(s) : Zhang MingMing; Bu ZhaoJun; Wang XingAn; He Pan; Chen Jie; Cui YaXin

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Catena 2022 Vol.209 No.Part 2 ref.63

4. GIS-based mapping of water-level fluctuations (WLF) and its impact on groundwater in an agrarian district in Tamil Nadu, India.

This study describes the results of groundwater table variation in Thanjavur District before and after the monsoon seasons. Groundwater-level data acquired by the field measurement and the elevation data have been obtained from the topographic survey. Groundwater is the major source for different...

Author(s) : Kumar, P. J. S.

Publisher : Springer, Dordrecht, Netherlands

Journal article : Environment, Development and Sustainability 2022 Vol.24 No.1 pp.994-1009 ref.49

5. Trace elements migrating from tailings to rock varnish laminated sediments in an old mining region from Nelson, Nevada, Usa.

The dispersion and influence of soluble and particulate trace elements (TEs) present in the materials from abandoned mines is an imminent problem on terrestrial and aquatic environments. The goal of this research is to provide a broader view of such transport, assessing particle size distribution...

Author(s) : Sims, D. B.; Hudson, A. C.; Keller, J. E.; Strange, M.; Buch, A. C.; Ferrari, D.; Fernandez, G. M.; Garcia-Hernandez, J.; Kesl, B. D.; Torres, S.

Publisher : International Research and Training Centre on Erosion and Sedimentation, Beijing, China

Journal article : International Journal of Sediment Research 2022 Vol.37 No.2 pp.202-213 ref.76

6. Role of climate and geography in arsenic mobility and risk at an artisanal mining site in an urbanized semi-arid environment.

Ultra-enriched arsenic (As) concentrations >30% occur at an abandoned artisanal mine in an urban park in San Diego, California, presenting a complex risk to the public. This study uses geochemistry in consideration with climate and geography to evaluate As transport away from the mine. Sediment...

Author(s) : Wright, J.; Cathcart, E.; Walther, S.; O'Shea, B.

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Journal of Environmental Management 2022 Vol.304 ref.42

7. Detection of slab-derived fluid in coastal area of Seto Inland Sea, Japan, based on 129I/127I ratios and halogen composition.

We collected 14 saline groundwater samples from coastal land areas of Hiroshima and Hyogo Prefectures. and Shodoshima of Kagawa Prefecture. Data on δD, δ0, Li/C1, Br/CI, and 1/CI, and 129I/127I for the samples reveal that the groundwater collected from Hiroshima Pref. are mainly derived from...

Author(s) : Togo, Y. S.; Kazahaya, K.; Tosaki, Y.; Takahashi, M.; Morikawa, N.; Takahashi, H. A.; Nakamura, Y.; Inamura, A.; Shimizu, H.; Matsuzaki, H.

Publisher : The Geochemical Society of Japan, Tokyo, Japan

Journal article : Chikyukagaku (Geochemistry) 2021 Vol.54 No.4 pp.189-200 ref.many

8. Evaluation of heavy metal pollution in coastal sediments of Bandar Abbas, the Persian Gulf, Iran: mercury pollution and environmental geochemical indices.

Mercury has been measured by using Cold Vapor-Atomic Absorption Spectrophotometry in coastal sediments of the Persian Gulf (Bandar Abbas region). The mean concentration of the six stations followed a decreasing order of S6 (3.95) > S1 (3.75) > S4 (3.55) > S5 (3.33) > S2 (2.72) > S3...

Author(s) : Elsagh, A.; Jalilian, H.; Ghaderi Aslshabestari, M.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Marine Pollution Bulletin 2021 Vol.167

9. Sustainability assessment of combined animal fodder and fuel production from microalgal biomass.

We present a comparative environmental and social life cycle assessment (ELCA and SLCA) of algal fuel and fodder co-production (AF + fodder) versus algal fuel and energy co-production (AF + energy). Our ELCA results indicate that fodder co-production offers an advantage in the following categories: ...

Author(s) : Portner, B. W.; Valente, A.; Guenther, S.

Publisher : MDPI AG, Basel, Switzerland

Journal article : International Journal of Environmental Research and Public Health 2021 Vol.18 No.21 ref.42

10. Polycyclic aromatic hydrocarbons in permafrost peatlands.

The concentrations of 15 individual PAHs in 93 peat cores have been determined by using high-performance liquid chromatography methods. In the profile the qualitative and quantitative composition of PAHs was non-uniform estimated in a wide range: from 112 to 3673 ng/g with mean 1214 ± 794 ng/g....

Author(s) : Pastukhov, A.; Loiko, S.; Kaverin, D.

Publisher : Nature Publishing Group, London, UK

Journal article : Scientific Reports 2021 Vol.11 No.9 ref.74

11. Hydrate formation from clay bound water for CO2 storage.

Geological storage of CO2 in form of hydrate in marine sediments is an alternative option to mitigate global warming. Clay is one of the most dominant lithology in marine sediments, which has higher water adsorption capacity than sand. In this work, the formation of CO2 hydrate from clay bound...

Author(s) : Sun YouHong; Jiang ShuHui; Li ShengLi; Wang XiaoChu; Peng SaiYu

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Chemical Engineering Journal 2021 Vol.406 ref.49

12. Numerical modeling of two-dimensional hydrodynamics in a highly curving and actively evolving neck cutoff under different hydrologic conditions.

Neck cutoffs are a common morphologic feature of meandering rivers though their occurrence on natural rivers is intermittent. Morphologic adjustments following cutoff initiation are typically rapid making detailed field investigations of the interactions between flow and form challenging. However,...

Author(s) : Turnipseed, C.; Konsoer, K.; Richards, D.; Willson, C.

Publisher : Wiley, Hoboken, USA

Journal article : Water Resources Research 2021 Vol.57 No.2

13. Geomorphic controls on the diversity and patterns of fluvial forms along longitudinal profiles.

A mix of catchment-scale controls operate to determine geomorphic river diversity in a catchment. These are contextualised here as imposed and flux controls. Imposed controls do not adjust over geomorphic timeframes and produce the environmental setting in which a river functions. Flux controls are ...

Author(s) : Khan, S.; Fryirs, K. A.; Ralph, T. J.

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Catena 2021 Vol.203

14. Effect of slippery boundary on solute transport in rough-walled rock fractures under different flow regimes.

Fundamental understanding of solute transport behaviors in rock fractures is of great importance to many hydrogeological processes. The fate of fluid-borne solutes is inherently linked to fluid flow process in rock fractures, which is usually theoretically and numerically analyzed under the...

Author(s) : Zhou JiaQing; Li ChangDong; Wang LiChun; Tang HuiMing; Zhang Min

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Journal of Hydrology (Amsterdam) 2021 Vol.598

15. Radiocarbon dating for the reconstruction of the 1717 CE triolet rock avalanche in the Mont Blanc massif, Italy.

The Arp Nouva peat bog located in the upper Ferret Valley in the Mont Blanc massif was critically evaluated since published radiocarbon dates have led to controversial conclusions on the formation of this swamp. Radiocarbon dating of woody fragments from three pits of up to 1 m depth was used to...

Author(s) : Hajdas, I.; Sojc, U.; Ivy-Ochs, S.; Akçar, N.; Deline, P.

Publisher : Frontiers Media S.A., Lausanne, Switzerland

Journal article : Frontiers in Earth Science 2021 Vol.9 No.January ref.24

16. Changes in the morphology of the terrain due to the terracing of slopes for the creation of new vine plantations in the doc priorat (Catalonia).

The present work shows an example of the changes on terrain morphology and soil volume involved in the terracing of hillslopes for new vineyard plantation. At present, this practice is carried out by heavy machinery (bulldozers and excavators), which produce a huge displacement of material and a...

Foreign Title :Cambios en la morfología del terreno por el aterrazamiento de laderas para la creación de nuevas plantaciones de viña en la doc priorat (Cataluña).

Author(s) : Cots-Folch, R.; Martínez-Casasnovas, J. A.; Ramos, M. C.

Publisher : Sociedad Española de Ciencia de Suelo (SECS), Madrid, Spain

Conference paper : II Simposio Nacional sobre Control de la Degradación de Suelos, Madrid, España, 6-8 julio 2005. Libro de actas 2021 pp.69-72 ref.7

17. Relationship between earthquake-induced hydrologic changes and faults.

Hydraulic properties of fault zones are important to understanding the pore pressure development and fault stability. In this work, we examined the relationship between water level changes caused by the 2008 Wenchuan Mw 7.9 earthquake and faults using four wells with the same lithology around the...

Author(s) : Ma YuChuan; Wang GuangCai; Yan Rui; Wang Bo; Yu HuaiZhong; Yu Chen; Yue Chong; Wang YaLi

Publisher : MDPI AG, Basel, Switzerland

Journal article : Water 2021 Vol.13 No.19 ref.42

18. Rock slope stability charts based on limit equilibrium method incorporating generalized Hoek-Brown strength criterion for static and seismic conditions.

Stability charts present a graphical approach for the estimation of factor of safety (FOS) of a finite slope with uniform soil properties which are routinely used by geotechnical engineers. They provide a way for quick and efficient determination of stability of slopes sidestepping the need for...

Author(s) : Vinay Kumar; Avijit Burman; Navneet Himanshu; Gordan, B.

Publisher : Springer Berlin, Heidelberg, Germany

Journal article : Environmental Earth Sciences 2021 Vol.80 No.6 ref.many

19. A multi-source data fusion modeling method for debris flow prevention engineering.

The Digital Elevation Model (DEM) data of debris flow prevention engineering are the boundary of a debris flow prevention simulation, which provides accurate and reliable DEM data and is a key consideration in debris flow prevention simulations. Thus, this paper proposes a multi-source data fusion...

Author(s) : Xu QingYang; Ye Jian; Lyu YiJie

Publisher : Science Press and Springer, Beijing, China

Journal article : Journal of Mountain Science 2021 Vol.18 No.4 pp.1049-1061 ref.many

20. Characterizing the scaling coefficient ω between viscous and inertial permeability of fractures.

Quantitative analysis of flow in fractures is an important issue for hydrogeological and geological engineering. In this study, Forchheimer models involving viscous permeability (kv) and inertial permeability (ki) were developed for groundwater flow in different single fractures or fractured media. ...

Author(s) : Xing Kun; Qian JiaZhong; Ma Lei; Ma HaiChun; Zhao WeiDong

Publisher : Elsevier Ltd, Oxford, UK

Journal article : Journal of Hydrology (Amsterdam) 2021 Vol.593

21. Creep behaviour of saturated purple mudstone under triaxial compression.

Many landslides have occurred in the purple mudstone of the Middle Triassic Badong Formation (T2b), which is widely distributed in Chongqing City and western Hubei Province, especially in the Three Gorges Reservoir Area (TGRA), China. To investigate the long-term stability of engineering supporting ...

Author(s) : Wang YanChao; Cong Lu; Yin XiaoMeng; Yang XuanYu; Zhang BiChang; Xiong Wei

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Engineering Geology 2021 Vol.288

22. Unloading depth of rock masses and its relations with river downcutting in deep valleys in southwest China.

Intense and deep unloading is a common manifestation of rock masses in deep valley in Southwest China. In this work, we investigated the evolution of four main rivers and the characteristics of the unloading cracks in rock masses in the river valleys, and we studied the relations of the tensile...

Author(s) : Tu GuoXiang; Deng Hui

Publisher : Elsevier, Amsterdam, Netherlands

Journal article : Engineering Geology 2021 Vol.288

23. Repeated high flows drive morphological change in rivers in recently deglaciated catchments.

Climate change is decreasing glacier cover and increasing the frequency and magnitude of precipitation-driven high flows and floods in many regions of the world. Precipitation may become the dominant water source for river systems in recently deglaciated catchments, with major rainfall events...

Author(s) : Eagle, L. J. B.; Carrivick, J. L.; Milner, A. M.; Brown, L. E.; Klaar, M. J.

Publisher : Wiley, Chichester, UK

Journal article : Earth Surface Processes and Landforms 2021 Vol.46 No.7 pp.1294-1310 ref.many

24. Impact of coal mining subsidence on sandy geomorphology and vegetation habitat in sandy area.

Objectives: To explore the problem of "secondary desertification" caused by coal mining subsidence in sandy area and its control countermeasures. Methods: The collapse fissure changes, vegetation displacement and tilt, dry sand layer and wind erosion/aeolian deposit rate of the edge, middle and...

Author(s) : Zhao GuoPing; Wu PuXia; Shen WeiBo

Publisher : Journal Board of Asian Agricultural Research, Cranston, USA

Journal article : Asian Agricultural Research 2021 Vol.13 No.5 pp.19-23 ref.12

25. Estimates on thermal impact of gas-line and alleviating effect of countermeasures in patchy permafrost of northwestern China.

Linear engineering across cold regions has a negative effect on the stability of underlying permafrost. The permafrost degradation affected by engineering activities would induce ground thaw settlement; hence, the feedback from ground alternation would damage the engineering structure conversely,...

Author(s) : Shi Rui; Wang Xu; Wen Zhi; Li DeSheng

Publisher : Springer, Dordrecht, Netherlands

Journal article : Bulletin of Engineering Geology and the Environment 2021 Vol.80 No.3 pp.2601-2616 ref.many