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Journal articles on the topic 'Natural seepages'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Remelli, Sara, Pietro Rizzo, Fulvio Celico, and Cristina Menta. "Natural Surface Hydrocarbons and Soil Faunal Biodiversity: A Bioremediation Perspective." Water 12, no. 9 (2020): 2358. http://dx.doi.org/10.3390/w12092358.

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Hydrocarbon pollution threatens aquatic and terrestrial ecosystems globally, but soil fauna in oil-polluted soils has been insufficiently studied. In this research, soil hydrocarbon toxicity was investigated in two natural oil seepage soils in Val D’Agri (Italy) using two different approaches: (i) toxicological tests with Folsomia candida (Collembola) and Eisenia fetida (Oligochaeta) and (ii) analysis of abundance and composition of micro- and meso-fauna. Soil sampling was done along 20 m-transepts starting from the natural oil seepages. Toxicological testing revealed that no exemplars of F. c

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2

Hovland, Martin, and James H. Sommerville. "Characteristics of two natural gas seepages in the North Sea." Marine and Petroleum Geology 2, no. 4 (1985): 319–26. http://dx.doi.org/10.1016/0264-8172(85)90027-3.

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3

Truche, Laurent, and Elena F. Bazarkina. "Natural hydrogen the fuel of the 21st century." E3S Web of Conferences 98 (2019): 03006. http://dx.doi.org/10.1051/e3sconf/20199803006.

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Much has been learned about natural hydrogen (H2) seepages and accumulation, but present knowledge of hydrogen behavior in the crust is so limited that it is not yet possible to consider exploitation of this resources. Hydrogen targeting requires a shift in the long-standing paradigms that drive oil and gas exploration. This paper describes the foundation of an integrated source-to-sink view of the hydrogen cycle, and propose preliminary practical guidelines for hydrogen exploration.

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4

Dimitrov, Lyoubomir. "Contribution to atmospheric methane by natural seepages on the Bulgarian continental shelf." Continental Shelf Research 22, no. 16 (2002): 2429–42. http://dx.doi.org/10.1016/s0278-4343(02)00055-9.

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5

Judd, Alan, Gareth Davies, Jason Wilson, Richard Holmes, Gordon Baron, and Ian Bryden. "Contributions to atmospheric methane by natural seepages on the UK continental shelf." Marine Geology 137, no. 1-2 (1997): 165–89. http://dx.doi.org/10.1016/s0025-3227(96)00087-4.

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6

Judd, Alan, Gareth Davies, Jason Wilson, Richard Holmes, Gordon Baron, and Ian Bryden. "Contributions to atmospheric methane by natural seepages on the U.K. continental shelf." Marine Geology 140, no. 3-4 (1997): 427–55. http://dx.doi.org/10.1016/s0025-3227(97)00067-4.

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7

Conti, Stefano, Claudio Argentino, Chiara Fioroni, Aura Cecilia Salocchi, and Daniela Fontana. "Miocene Seep-Carbonates of the Northern Apennines (Emilia to Umbria, Italy): An Overview." Geosciences 11, no. 2 (2021): 53. http://dx.doi.org/10.3390/geosciences11020053.

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The natural emission of methane-rich fluids from the seafloor, known as cold seepage, is a widespread process at modern continental margins. The studies on present-day cold seepages provide high-resolution datasets regarding the fluid plumbing system, biogeochemical processes in the sediment, seafloor seepage distribution and ecosystems. However, the long-term (hundreds of thousands to millions of years) evolution of cold seepage remains elusive. The identification and study of outcrop analogous now exposed on land represent a valuable method for better understanding the effects of geological

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8

Enoh, Mfoniso Asuquo, Francis Ifeanyi Okeke, and Uzoma Chinenye Okeke. "AUTOMATIC LINEAMENTS MAPPING AND EXTRACTION IN RELATIONSHIP TO NATURAL HYDROCARBON SEEPAGE IN UGWUEME, SOUTH-EASTERN NIGERIA." Geodesy and cartography 47, no. 1 (2021): 34–44. http://dx.doi.org/10.3846/gac.2021.12099.

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The study focus on the integration of Remote Sensing and Geographic Information System for identification and delineation of lineaments in relation to natural hydrocarbon seepage, which occur in Ugwueme, South-Eastern Nigeria. To achieve this objective, remotely sensed data (ASTER Digital Elevation Model and Landsat 8 OLI/TIRS) were used to depict the surface expression of faults, folds and fractures which are expressed in the form of lineaments. The global positioning system (GPS) was also used for ground verification. The geology map of the study area, which is elucidated in the geology of N

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9

Bhagobaty, Ranjan Kumar. "Hydrocarbon-utilizing bacteria of natural crude oil seepages, Digboi oilfield, Northeastern region of India." Journal of Sedimentary Environments 5, no. 2 (2020): 177–85. http://dx.doi.org/10.1007/s43217-020-00013-8.

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10

Deville, Eric, and Alain Prinzhofer. "The origin of N2-H2-CH4-rich natural gas seepages in ophiolitic context: A major and noble gases study of fluid seepages in New Caledonia." Chemical Geology 440 (November 2016): 139–47. http://dx.doi.org/10.1016/j.chemgeo.2016.06.011.

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11

Tveit, Mari R., Mahmoud Khalifeh, Tor Nordam, and Arild Saasen. "The fate of hydrocarbon leaks from plugged and abandoned wells by means of natural seepages." Journal of Petroleum Science and Engineering 196 (January 2021): 108004. http://dx.doi.org/10.1016/j.petrol.2020.108004.

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12

Lorenson, Thomas D., Florence L. Wong, Peter Dartnell, and Ray W. Sliter. "Greenhouse gases generated from the anaerobic biodegradation of natural offshore asphalt seepages in southern California." Geo-Marine Letters 34, no. 2-3 (2014): 281–95. http://dx.doi.org/10.1007/s00367-014-0359-1.

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13

van der Werff, H. M. A., W. H. Bakker, F. D. van der Meer, and W. Siderius. "Combining spectral signals and spatial patterns using multiple Hough transforms: An application for detection of natural gas seepages." Computers & Geosciences 32, no. 9 (2006): 1334–43. http://dx.doi.org/10.1016/j.cageo.2005.12.003.

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14

Márquez, G., F. Galarraga, R. Fernández, et al. "GEOCHEMICAL COMPOSITION OF BEACH TAR FROM THE SE COAST OF THE PARIA PENINSULA, NE VENEZUELA: DERIVATION FROM NATURAL SEEPAGES." Journal of Petroleum Geology 36, no. 2 (2013): 179–93. http://dx.doi.org/10.1111/jpg.12550.

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15

Ramoutar, Sheldon, Azad Mohammed, and Adesh Ramsubhag. "Laboratory-scale bioremediation potential of single and consortia fungal isolates from two natural hydrocarbon seepages in Trinidad, West Indies." Bioremediation Journal 23, no. 3 (2019): 131–41. http://dx.doi.org/10.1080/10889868.2019.1640181.

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16

Donzé, Frédéric-Victor, Laurent Truche, Parisa Shekari Namin, Nicolas Lefeuvre, and Elena F. Bazarkina. "Migration of Natural Hydrogen from Deep-Seated Sources in the São Francisco Basin, Brazil." Geosciences 10, no. 9 (2020): 346. http://dx.doi.org/10.3390/geosciences10090346.

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Hydrogen gas is seeping from the sedimentary basin of São Franciso, Brazil. The seepages of H2 are accompanied by helium, whose isotopes reveal a strong crustal signature. Geophysical data indicates that this intra-cratonic basin is characterized by (i) a relatively high geothermal gradient, (ii) deep faults delineating a horst and graben structure and affecting the entire sedimentary sequence, (iii) archean to paleoproterozoïc basements enriched in radiogenic elements and displaying mafic and ultramafic units, and (iv) a possible karstic reservoir located 400 m below the surface. The high geo

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17

Huang, Baojia, Xianming Xiao, Xushen Li, and Dongshen Cai. "Spatial distribution and geochemistry of the nearshore gas seepages and their implications to natural gas migration in the Yinggehai Basin, offshore South China Sea." Marine and Petroleum Geology 26, no. 6 (2009): 928–35. http://dx.doi.org/10.1016/j.marpetgeo.2008.04.009.

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18

Pathak, Dinesh, and Surendra Raj Shrestha. "Delineation of groundwater potential zones in rocky aquifers in the mountainous area of Central Nepal." Journal of Nepal Geological Society 50, no. 1 (2016): 161–69. http://dx.doi.org/10.3126/jngs.v50i1.22878.

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Groundwater is the lifeline for the people residing in the mountainous regions of Nepal as they are dependent in this natural resource for drinking and other domestic purposes. The springs and seepages are reported to be drying in many places in Nepalese mountains in the recent time. Such problem is expected to be much more severe in view of climate change condition in the future. In this regard, it is important to establish a methodology to explore groundwater in the mountainous terrain for better planning. In order to delineate groundwater potential zones of rocky aquifers in the mountainous

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19

Poirier, Miriam C., Letizia Marsili, Maria Cristina Fossi, et al. "Polycyclic Aromatic Hydrocarbon-DNA Adducts in Gulf of Mexico Sperm Whale Skin Biopsies Collected in 2012." Toxicological Sciences 181, no. 1 (2021): 115–24. http://dx.doi.org/10.1093/toxsci/kfab016.

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Abstract The northern Gulf of Mexico has a long history of polycyclic aromatic hydrocarbon (PAH) contamination from anthropogenic activities, natural oil seepages, and the 2010 Deepwater Horizon explosion and oil spill. The continental shelf of the same area is a known breeding ground for sperm whales (Physeter macrocephalus). To evaluate PAH-DNA damage, a biomarker for potential cancer risk, we compared skin biopsies collected from Gulf of Mexico sperm whales in 2012 with skin biopsies collected from sperm whales in areas of the Pacific Ocean in 1999–2001. All samples were obtained by crossbo

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20

Katz, H. R. "A Historical Review of Petroleum Exploration in New Zealand." Energy Exploration & Exploitation 6, no. 2 (1988): 89–103. http://dx.doi.org/10.1177/014459878800600203.

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Active exploration for petroleum in New Zealand is over 120 years old. While some sporadic, commercial production was obtained already in the earliest part of this century, exploration until 1920 was entirely guided by the occurrence of natural seepages. 1925–1944 was the first period of scientifically-oriented exploration, spurred particularly by the requirements of the second World War. In 1955 began the present period of more intensified prospecting, which in 1965 extended to New Zealand's very large ofshore area. The onshore Kapuni gas/condensate field was discovered in 1959, and the giant

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21

Whiticar, Michael, and Hinrich Schaefer. "Constraining past global tropospheric methane budgets with carbon and hydrogen isotope ratios in ice." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 365, no. 1856 (2007): 1793–828. http://dx.doi.org/10.1098/rsta.2007.2048.

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Upon closer inspection, the classical view of the synchronous relationship between tropospheric methane mixing ratio and Greenland temperature observed in ice samples reveals clearly discernable variations in the magnitude of this response during the Late Pleistocene (<50 kyr BP). During the Holocene this relationship appears to decouple, indicating that other factors have modulated the methane budget in the past 10 kyr BP. The δ 13 CH 4 and δD-CH 4 of tropospheric methane recorded in ice samples provide a useful constraint on the palaeomethane budget estimations. Anticipated changes in pal

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22

Li, Yongye, Xiaoteng Song, Yaqi Pang, et al. "Laboratory investigation of permeability property of natural gravels with different particle sizes under different laying conditions." Science Progress 104, no. 1 (2021): 003685042110023. http://dx.doi.org/10.1177/00368504211002357.

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The seepage properties of natural gravel are one of the problems to be considered in seepage project designs. In this paper, the seepage properties of the natural gravel with particle sizes of 5, 20 and 60 mm were investigated under different laying conditions. The effect of the particle size, laying depth, bulk density and pressurized head on the seepage properties of the natural gravel was analyzed by using the combined methods of theoretical analysis with physical model test. The results showed that the seepage flow in the natural gravel was non-laminar flow in the test conditions described

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23

Thonat, Thibaud, Marielle Saunois, Philippe Bousquet, et al. "Detectability of Arctic methane sources at six sites performing continuous atmospheric measurements." Atmospheric Chemistry and Physics 17, no. 13 (2017): 8371–94. http://dx.doi.org/10.5194/acp-17-8371-2017.

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Abstract. Understanding the recent evolution of methane emissions in the Arctic is necessary to interpret the global methane cycle. Emissions are affected by significant uncertainties and are sensitive to climate change, leading to potential feedbacks. A polar version of the CHIMERE chemistry-transport model is used to simulate the evolution of tropospheric methane in the Arctic during 2012, including all known regional anthropogenic and natural sources, in particular freshwater emissions which are often overlooked in methane modelling. CHIMERE simulations are compared to atmospheric continuou

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24

Zhu, Guo Sheng, Jia Fa Zhang, Hao Dong Cui, and Shao Long Li. "Experimental Research on Fine Sand and Filter Material of Xing-Long Hydroproject Dam Foundation." Applied Mechanics and Materials 584-586 (July 2014): 1956–62. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1956.

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The Xing-long hydro project is situated on fine sand foundation, whose seepage stability is a vital factor to the safety of the buildings. By means of field sampling, seepage deformation test and filter test to fine sand and filter material, the seepage deformation character of fine sand and filter material are studied. The seepage failure gradient of fine sand is very low under natural condition, its seepage stability should be satisfied under the protection of filter materials, but the protective capability of natural filter material is limited, it is suggested that the filter material be op

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25

Zongxiao, Ren, Du Kun, Shi Junfeng, et al. "Semianalytical Coupled Model of Transient Pressure Behavior for Horizontal Well with Complex Fracture Networks in Tight Oil Reservoirs." Mathematical Problems in Engineering 2019 (June 9, 2019): 1–12. http://dx.doi.org/10.1155/2019/6524105.

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Due to a large number of natural fractures in tight oil reservoir, many complex fracture networks are generated during fracturing operation. There are five kinds of flow media in the reservoir: “matrix, natural fracture, hydraulic fracture network, perforation hole, and horizontal wellbore”. How to establish the seepage model of liquid in multiscale medium is a challenging problem. Firstly, this paper establishes the dual medium seepage model based on source function theory, principle of superposition, and Laplace transformation and then uses the “star-triangle” transform method to establish t

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26

Leifer, Ira, Bruce P. Luyendyk, Jim Boles, and Jordan F. Clark. "Natural marine seepage blowout: Contribution to atmospheric methane." Global Biogeochemical Cycles 20, no. 3 (2006): n/a. http://dx.doi.org/10.1029/2005gb002668.

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27

Gerali, Francesco, and Jenny Gregory. "Understanding and finding oil over the centuries: The case of the Wallachian Petroleum Company in Romania." Earth Sciences History 36, no. 1 (2017): 41–62. http://dx.doi.org/10.17704/1944-6178-36.1.41.

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About four centuries passed between the first appearance of pamphlets in which the medical uses of petroleum were discussed (for example, the Tegernsee (southern Bavaria, 1430), Geneva (Swiss Confederacy, 1480), Nurnberg (northern Bavaria, 1500), and the Antwerp (Duchy of Brabant, today Flanders, 1540–1550) pamphlets), and Michael Faraday's discovery in 1825 of the chemical composition of benzene derived from bituminous oil as a compound of carbon and hydrogen. During this long time span, studies of oil, carried out between alchemy and chemistry, benefited from rapid advances and brilliant ins

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28

Wang, Xiaoming, Junbin Chen, Jianhong Zhu, and Diguang Gong. "Effect of the Angle between Hydraulic Fracture and Natural Fracture on Shale Gas Seepage." Mathematical Problems in Engineering 2020 (December 23, 2020): 1–13. http://dx.doi.org/10.1155/2020/5136948.

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Fracturing technology is an effective measure to exploit shale gas and the fractures improve the seepage ability of shale reservoir after fracturing. In this paper, taking Chang 7 of Yanchang Formation as the study area, a double porosity seepage model considering natural fracture was established and it was solved by finite element method of COMSOL5.5; then, shale gas seepage was analyzed under different angles between hydraulic fracture and natural fracture finally. Meanwhile, angles between hydraulic fracture and natural fracture were optimized by analyzing both the reservoir pressure distri

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29

Wang, Chunhong, Jihong Chen, Jin Wang, and Jianping Chen. "Flume testing of seepage velocity monitoring using optic fiber distributed temperature sensing for embankments." Sensor Review 36, no. 2 (2016): 120–29. http://dx.doi.org/10.1108/sr-04-2015-0065.

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Purpose Distributed temperature sensing (DTS) can identify locations and factors of seepage in embankments. Inspired by the classical transient hot-wire method (THW), the focus of this paper is to investigate the feasibility and propose a calibrated method of seepage velocity monitoring using the optical fiber DTS. Design/methodology/approach According to the definition and the measurement of thermal conductivity, the nominal thermal conductivity, which comprehensively reflects the influence of heat transfer and seepage factors, is proposed and the corresponding solution is also derived. Then,

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30

Jones, A. T., G. A. Logan, J. M. Kennard, and N. Rollet. "REASSESSING POTENTIAL ORIGINS OF SYNTHETIC APERTURE RADAR (SAR) SLICKS FROM THE TIMOR SEA REGION OF THE NORTH WEST SHELF ON THE BASIS OF FIELD AND ANCILLARY DATA." APPEA Journal 45, no. 1 (2005): 311. http://dx.doi.org/10.1071/aj04026.

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The Timor Sea region of the North West Shelf is one of natural hydrocarbon accumulation and seepage, which has been investigated by integrated remote sensing studies in the past 10 years. One of the primary tools incorporated in these studies has been Synthetic Aperture Radar (SAR). During a recent Geoscience Australia marine survey to the Yampi Shelf area, active hydrocarbon seepage was directly observed in the form of gas plumes rising from the sea-floor. Active seepage was not observed in areas associated with dense clusters of elongated to irregularshaped features in the SAR data, which ha

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31

Körber, Jan-Hendrik, Heiko Sahling, Thomas Pape, Christian dos Santos Ferreira, Ian MacDonald, and Gerhard Bohrmann. "Natural oil seepage at Kobuleti Ridge, eastern Black Sea." Marine and Petroleum Geology 50 (February 2014): 68–82. http://dx.doi.org/10.1016/j.marpetgeo.2013.11.007.

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32

Logan, Graham, Andrew Jones, Nadege Rollet, et al. "Assessment of natural hydrocarbon seepage studies in Australian waters." APPEA Journal 48, no. 2 (2008): 454. http://dx.doi.org/10.1071/aj07044.

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33

Kvenvolden, K. A., and C. K. Cooper. "Natural seepage of crude oil into the marine environment." Geo-Marine Letters 23, no. 3-4 (2003): 140–46. http://dx.doi.org/10.1007/s00367-003-0135-0.

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34

Etiope, Giuseppe. "Natural emissions of methane from geological seepage in Europe." Atmospheric Environment 43, no. 7 (2009): 1430–43. http://dx.doi.org/10.1016/j.atmosenv.2008.03.014.

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35

Weed, Brynne M., Gisselle D. Brambila, and Lambert A. Doezema. "Natural Seepage of Methane and Light Alkanes at Three Locations in Southern California." Atmosphere 11, no. 9 (2020): 979. http://dx.doi.org/10.3390/atmos11090979.

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Methane and light (C2–C5) alkane fluxes were measured from three geologic seepage sites in Southern California during May and June of 2019. Samples were collected from visible macroseeps in Carpinteria, McKittrick, and Ojai using an aluminum flux chamber with attached stainless-steel canisters and were analyzed for C1 to C5 alkanes via gas chromatography. Carpinteria fluxes were characterized by a lower percentage of volatile organic compounds relative to methane but greatly enhanced (~20:1) ratios of i-butane to n-butane. McKittrick and Ojai exhibited less methane-rich emissions and i-butane

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36

Menshikova, Elena, Viacheslav Fetisov, Tatyana Karavaeva, Sergey Blinov, Pavel Belkin, and Sergey Vaganov. "Reducing the Negative Technogenic Impact of the Mining Enterprise on the Environment through Management of the Water Balance." Minerals 10, no. 12 (2020): 1145. http://dx.doi.org/10.3390/min10121145.

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In terms of anthropogenic impact of mining and processing enterprises, the adjacent territories are contaminated by upstream tailings dams. The contamination is developed by active seepage of liquid waste through the body of the dams. The authors have analyzed water balance at the Kachkanar Mining and Processing Plant tailings dump (Russia, Ural Region). The company develops vanadium-containing titanium-magnetite iron ores with low ore (15%). This, along with high productivity, has determined the formation of a large number of tailings and significant amount of wastewater. The purpose of the s

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37

Hu, Hong Tao. "The Efficiency of Natural and Electrokinetic Enhanced Migration of Pb in Aquifer." Applied Mechanics and Materials 253-255 (December 2012): 1098–101. http://dx.doi.org/10.4028/www.scientific.net/amm.253-255.1098.

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The natural and electrokinetic enhanced migration method was studied by the experiments in groundwater contaminated by heavy metal Pb in this work. The experimental results showed that the variation rule of Pb reflected that its migration was weak and the removal efficiency was only 9.30% near the anode in the natural seepage condition, but under the enhanced migration and remediation function, the pollutants could be enriched and removed faster, thus the removal efficiency of Pb was 46.72% near the anode at the end of experiment when the experimental voltage gradient was 0.28V/cm, which made

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Jiang, Xiangang, Zhu Zhanyuan, Huayong Chen, et al. "Natural dam failure in slope failure mode triggered by seepage." Geomatics, Natural Hazards and Risk 11, no. 1 (2020): 698–723. http://dx.doi.org/10.1080/19475705.2020.1746697.

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Roling, W. F. M., S. Ortega-Lucach, S. R. Larter, and I. M. Head. "Acidophilic microbial communities associated with a natural, biodegraded hydrocarbon seepage." Journal of Applied Microbiology 101, no. 2 (2006): 290–99. http://dx.doi.org/10.1111/j.1365-2672.2006.02926.x.

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40

Men, Xiao Xi, C. A. Tang, and Zhi Hui Han. "Numerical Simulation on Propagation Mechanism of Hydraulic Fracture in Fractured Rockmass." Applied Mechanics and Materials 488-489 (January 2014): 417–20. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.417.

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Hydraulic fracturing process in fractured rockmass which with an existing single natural fracture at its various conditions: its different angles and different lengths was simulated by using RFPA2D(2.0)-Flow version which adopts the finite element method and considers the heterogeneous characteristics of rock in meso-scale, creates seepage-stress-failure coupling model. The effect tendency of natural fractures angle and length on the seepage characteristics of fractured rockmass was given through the description of tensile fracture initiation and propagation in the rock specimens. The simulati

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41

Sha, Ziheng, Hai Pu, Ming Li, et al. "Experimental Study on the Creep Characteristics of Coal Measures Sandstone under Seepage Action." Processes 6, no. 8 (2018): 110. http://dx.doi.org/10.3390/pr6080110.

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The seepage action of underground water accelerates the deformation of roadway surrounding rock in deep mines. Therefore, the study of creep characteristics of surrounding rock under seepage action is the basis for the stability control of roadway surrounding rock in deep water-rich areas. In this paper, a seepage-creep coupling test system for complete rock samples was established. Combined with a scanning electron microscopy (SEM) test system, the seepage-creep law of coal measures sandstone and the damage mechanism were revealed. The study results showed that the maximum creep deformation o

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42

Wang, Zhaosheng, Lianbo Zeng, Zhouliang Luo, Kewei Zu, Haigang Lao, and Ningning Meng. "Natural fractures in the Triassic tight sandstones of the Dongpu Depression, Bohai Bay Basin, eastern China: The key to production." Interpretation 8, no. 4 (2020): SP71—SP80. http://dx.doi.org/10.1190/int-2019-0252.1.

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Natural fractures are identified as high-quality storage space and seepage channels for the Triassic tight sandstone reservoirs in the Dongpu Depression, playing an important role in tight sandstone oil production. We have evaluated natural fracture growth at different scales using outcrops, cores, thin sections, and imaging logs and analyzed the correlation between fractures and crude oil production capacity with production data. Results show that natural fractures primarily are distributed in fine sandstones and siltstones, which mostly are shear fractures of near east–west and northeast–sou

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43

Hu, Hong Tao. "Research on the Transference of Cd with Properties of Environmental Materials and Activated Reagent in Underground." Advanced Materials Research 675 (March 2013): 184–87. http://dx.doi.org/10.4028/www.scientific.net/amr.675.184.

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The natural transfusion and activated reagent (environmental material) enhanced migration efficiency was studied by the experiments in Cd contaminated groundwater in this work. The experimental results showed that the variation rule of Cd reflected that its migration was weak and the removal efficiency was only 11.36% near the anode zone in the natural seepage condition, but under the enhanced migration function, the pollutants could be enriched and removed faster. The main migrating direction of pollutant was mainly from upstream anode zone to downstream cathode zone, which indicated that the

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44

Niazi, Fawad S., Aranzazu Pinan-Llamas, and Kamran Akhtar. "Lessons from the Case History of a Massive Landslide Dam." Geofluids 2020 (November 29, 2020): 1–32. http://dx.doi.org/10.1155/2020/8840629.

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A massive landslide created a natural dam on two tributaries of Jhelum River near the town of Hattian Bala in Kashmir in October 2005. The landslide was triggered by a 7.6 Mw earthquake. The resulting unconsolidated dam and water impoundment upstream carried hazard potential of downstream damage to both infrastructure and population due to potential flooding caused by its breach. Comprehensive investigations and monitoring were implemented to analyse dam stability. Fresh topographic profiles were generated. Samples of the matrix materials were utilized in the laboratory investigations includin

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Liu, Sihong, Siyuan Xu, and Bin Zhou. "In situ seepage testing method for fractured zones of rock mass." Quarterly Journal of Engineering Geology and Hydrogeology 54, no. 1 (2020): qjegh2020–050. http://dx.doi.org/10.1144/qjegh2020-050.

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The permeability characteristics of rock mass discontinuities are important in the stability of hydropower station projects. We propose a large-scale in situ seepage testing method and use this method to test gently dipping bedding faults (C3 zone) and steep faults (F14) in a hydropower station construction field in China. The in situ test results are compared with those of both undisturbed and reconstituted specimens. The comparison indicates that the largest critical hydraulic gradient and the smallest seepage permeability coefficient are obtained via in situ tests because they are performed

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Smith, M., and J. M. Konrad. "Analysis of the annual thermal response of an earth dam for the assessment of the hydraulic conductivity of its compacted till core." Canadian Geotechnical Journal 45, no. 2 (2008): 185–95. http://dx.doi.org/10.1139/t07-095.

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Heat carried by the seepage water along hydraulic flow lines can serve as a natural tracer to help detect contrasting hydraulic conductivities in embankment dams. Thermal monitoring was realized on the 94.5 m high QA-01 embankment dam in northern Quebec to characterize the temperature distribution across its entire section. The analysis of the annual thermal response of the dam clearly showed a zone of higher seepage velocities in the compacted till core. Approximations concerning the increased hydraulic conductivity were made using a simple thermal model. Complementary numerical modelling pro

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Beltaos, S. "Numerical computation of river ice jams." Canadian Journal of Civil Engineering 20, no. 1 (1993): 88–99. http://dx.doi.org/10.1139/l93-010.

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A numerical model called RIVJAM has been developed to compute the configuration of and water levels caused by ice jams of the "wide" kind, under natural stream conditions and regardless of whether the jam has attained its full potential, known as equilibrium. Account of seepage flow through the voids of the jam enables predictions of grounding conditions to be made, in accord with observations. The model is applied to three case studies of ice jam events and found to perform satisfactorily. The various model coefficients fall within the expected ranges, with the exception of a parameter charac

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Logan, Graham A., Andrew T. Jones, John M. Kennard, Georgina J. Ryan, and Nadege Rollet. "Australian offshore natural hydrocarbon seepage studies, a review and re-evaluation." Marine and Petroleum Geology 27, no. 1 (2010): 26–45. http://dx.doi.org/10.1016/j.marpetgeo.2009.07.002.

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Dobson, Patrick F., Teamrat A. Ghezzehei, Paul J. Cook, J. Alfredo Rodríguez-Pineda, Lourdes Villalba, and Rodrigo De la Garza. "Heterogeneous seepage at the Nopal I natural analogue site, Chihuahua, Mexico." Hydrogeology Journal 20, no. 1 (2011): 155–66. http://dx.doi.org/10.1007/s10040-011-0783-5.

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Shimbashi, Misato, Shingo Yokoyama, Yasutaka Watanabe, et al. "Formation of Natural Silicate Hydrates by the Interaction of Alkaline Seepage and Sediments Derived from Serpentinized Ultramafic Rocks at Narra, Palawan, the Philippines." Minerals 10, no. 8 (2020): 719. http://dx.doi.org/10.3390/min10080719.

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In radioactive waste disposal facilities, low-permeability engineered barrier materials are important for inhibiting radionuclide migration. However, dissolution–precipitation reactions under alkaline conditions change the permeability of engineered barriers. To understand long-term dissolution–precipitation reactions under alkaline conditions in chemically complex systems, trenches and drill holes were excavated at Narra in Palawan, where alkaline fluids (pH > 11) have been naturally produced, seeping into clastic sediments derived from serpentinized ultramafic rocks and gabbro of Palawan

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