Academic literature on the topic 'Vadose zone geochemistry'

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Journal articles on the topic "Vadose zone geochemistry"

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Arora, Bhavna, Dipankar Dwivedi, Boris Faybishenko, Raghavendra B. Jana, and Haruko M. Wainwright. "Understanding and Predicting Vadose Zone Processes." Reviews in Mineralogy and Geochemistry 85, no. 1 (2019): 303–28. http://dx.doi.org/10.2138/rmg.2019.85.10.

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Batukaev, Abdul-Malik A., Anatoly P. Endovitsky, Andrey G. Andreev, et al. "Ion association in water solution of soil and vadose zone of chestnut saline solonetz as a driver of terrestrial carbon sink." Solid Earth 7, no. 2 (2016): 415–23. http://dx.doi.org/10.5194/se-7-415-2016.

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Abstract. The assessment of soil and vadose zone as the drains for carbon sink and proper modeling of the effects and extremes of biogeochemical cycles in the terrestrial biosphere are the key components to understanding the carbon cycle, global climate system, and aquatic and terrestrial system uncertainties. Calcium carbonate equilibrium causes saturation of solution with CaCO3, and it determines its material composition, migration and accumulation of salts. In a solution electrically neutral ion pairs are formed: CaCO30, CaSO40, MgCO30, and MgSO40, as well as charged ion pairs CaHCO3+, MgHC
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Pawar, N. J., and J. D. Nikumbh. "Trace Element Geochemistry of Groundwater from Behedi Basin, Nasik District, Maharashtra." Journal Geological Society of India 54, no. 5 (1999): 501–14. http://dx.doi.org/10.17491/jgsi/1999/540507.

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Abstract Studies carried out on trace element geochemistry of groundwater from Behedi basin have shown spatial as well as temporal variations. While the spatial variations have been attributed to land use practices in the basin, the temporal changes indicated input of trace elements from soil zone due to rain-fed recharge. On the basis of spatio-temporal variations, weathering of rocks and human activity have been identified as the potential sources of trace elements in the groundwater. The budgeting of trace elements in the groundwater suggests that the rate of flushing of Cu is highest from
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Suzuki, Koichi, and Sadanari Higashi. "Groundwater flow after heavy rain in landslide‐slope area from 2-D inversion of resistivity monitoring data." GEOPHYSICS 66, no. 3 (2001): 733–43. http://dx.doi.org/10.1190/1.1444963.

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In the interest of monitoring the flow of groundwater from heavy rains, we conducted surface resistivity tomography through the vadose zone over several days. The measured data were modeled by 2-D inversion. A laboratory experiment was carried out to estimate the difference in geological characteristics. We measured the effects of groundwater fluctuation using two tank models: one using sand and one using bricks, which represent unconsolidated sediments and jointed rocks, respectively. In the sand model, we succeeded in monitoring water‐level fluctuation as the change in resistivity over time.
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Baldridge, W. Scott, Gregory L. Cole, Bruce A. Robinson, and George R. Jiracek. "Application of time-domain airborne electromagnetic induction to hydrogeologic investigations on the Pajarito Plateau, New Mexico, USA." GEOPHYSICS 72, no. 2 (2007): B31—B45. http://dx.doi.org/10.1190/1.2437701.

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We conducted a time-domain airborne electromagnetic (AEM) survey of part of the semiarid Pajarito Plateau of northern New Mexico to determine depths and lateral extent of perched aquifers in the vadose zone and depths and pathways of infiltration to the regional aquifer. The electrical resistivity of the plateau ranged over three orders of magnitude ([Formula: see text] to [Formula: see text]) to a depth of at least [Formula: see text]. Borehole and surface-derived data allow the correlation of resistivity images with the hydrogeology of the plateau. As expected, water exerts a significant con
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Osorio-Leon, Ivan, Daniella Rempe, Julien Bouchez, and Jennifer Druhan. "Biogeochemical reactivity in the unsaturated zone revealed by in-situ measurements." ARPHA Conference Abstracts 8 (May 28, 2025): e155241. https://doi.org/10.3897/aca.8.e155241.

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Bedrock mineral breakdown in mountainous landscapes sustains long-term atmospheric CO₂ drawdown and releases solutes that sustain ecosystems and set the chemistry of upland stream water. In the unsaturated Bedrock Vadose Zone (BVZ) of hillslopes, minerals, water, reactive gases, and deep roots interact to produce a hotspot of these weathering reactions. New evidence suggests that, in the BVZ, rock moisture sustains evapotranspiration, while deep roots drive deep CO₂ production. However, the contribution of the BVZ to catchment-scale chemical weathering fluxes, and particularly the role of deep
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Wynn, P. M., S. Ambler, I. Grefe, et al. "Contemporary systematics of vadose zone nitrate capture by speleothem carbonate." Chemical Geology 571 (June 2021): 120172. http://dx.doi.org/10.1016/j.chemgeo.2021.120172.

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Dupuis, J. Christian, Karl E. Butler, and Anton W. Kepic. "Seismoelectric imaging of the vadose zone of a sand aquifer." GEOPHYSICS 72, no. 6 (2007): A81—A85. http://dx.doi.org/10.1190/1.2773780.

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We have acquired a [Formula: see text] seismoelectric section over an unconfined aquifer to demonstrate the effectiveness of interfacial signals at imaging interfaces in shallow sedimentary environments. The seismoelectric data were acquired by using a [Formula: see text] accelerated weight-drop source and a 24-channel seismoelectric recording system composed of grounded dipoles, preamplifiers, and seismographs. In the shot records, interfacial signals were remarkably clear; they arrived simultaneously at offsets as far as [Formula: see text] from the seismic source. The most prominent signal
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Park, Stephen. "Fluid migration in the vadose zone from 3-D inversion of resistivity monitoring data." GEOPHYSICS 63, no. 1 (1998): 41–51. http://dx.doi.org/10.1190/1.1444326.

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The movement of a small plume of fresh water through the vadose zone was monitored using surface resistivity tomography and pole‐pole potential measurements. Sets of potential measurements on a square grid at several times throughout the experiment show gradual, progressive, and systematic development of low‐resistivity zones that are inferred to be loci of fluid concentration. A procedure for inverting percentage changes in potentials is developed here and used to map maximum potential changes of 13% into resistivity decreases of up to 40% through 3-D resistivity inversion. The resulting patt
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Mangriotis, Maria-Daphne, James W. Rector, E. Frederic Herkenhoff, and John C. Neu. "Scattering versus intrinsic attenuation in the vadose zone: A VSP experiment." GEOPHYSICS 78, no. 2 (2013): B49—B63. http://dx.doi.org/10.1190/geo2012-0174.1.

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We studied scattering versus intrinsic attenuation estimates in the vadose zone from a shallow VSP experiment conducted in the Lawrence Livermore National Laboratory (LLNL) facility. Using permanent downhole geophones and a vertical impact source, we estimated effective attenuation of the downgoing transmitted P-wave. We compared theoretical scattering attenuation estimates and finite-difference synthetics to the measured field [Formula: see text] values ([Formula: see text] being a measure of attenuation). Using a selected range of impedance profiles of variance typical for a sedimentary basi
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Dissertations / Theses on the topic "Vadose zone geochemistry"

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Perdrial, Nicolas. "Nature et rôle des matières solides en suspension dans la dynamique du transfert des éléments polluants." Phd thesis, Université Louis Pasteur - Strasbourg I, 2007. http://tel.archives-ouvertes.fr/tel-00760435.

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Afin de caractériser la nature et le rôle des particules fines et colloïdales (PFC) dans les milieux de subsurface, le suivi dans le temps des PFC contenues à la fois dans les retombées atmosphériques et dans les eaux d'infiltration et la détermination des facteurs contrôlant la distribution et l'évolution des PFC dans l'environnement a été réalisée. La démarche utilisée est basée essentiellement sur des observations in situ et consiste à prélever mensuellement, sur le terrain, les PFC contenues dans les retombées atmosphériques et dans les eaux d'infiltration d'un sol. L'étude en MET/EDX des
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Hansen, David Joseph. "An Investigation of Linked Physical And Biogeochemical Processes In Heterogeneous Soils In The Vadose Zone." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9784.

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Chemical dynamics in the vadose zone are poorly understood due to the transient nature of chemical and hydrologic conditions, but are nonetheless critical to understanding contaminant fate and transport. This work explored the effects of soil structure (i.e. layers, lenses) on linked geochemical, hydrological, and microbiological processes under changing hydrologic conditions (e.g. rainfall, introduction of groundwater, and fluctuating water table heights). A homogenized medium-grained sand, homogenized organic-rich loam and a sand-over-loam layered column were constructed for the first serie
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Books on the topic "Vadose zone geochemistry"

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Selker, John S. Vadose zone processes. Lewis Publishers, 1999.

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Bundschuh, Jochen. Geochemical modeling of groundwater, vadose, and geothermal systems. CRC Press/Balkema, 2012.

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Blowes, David W. The pre-water geochemistry and the mineralogy of the vadose zone of sulfide tailings, Waite Amulet, Quebec, Canada. s.n, 1990.

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4

Fisher, R. Stephen. Integration of ground-water and vadose-zone geochemistry to investigate hydrochemical evolution: A case study in arid lands of the northern Chihuahuan Desert, Trans-Pecos Texas. Bureau of Economic Geology, University of Texas at Austin, 1990.

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5

Selker, John S., James T. McCord, and C. Kent Keller. Vadose Zone Processes. CRC, 1999.

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6

Bundschuh, Jochen, and Michael Zilberbrand. Geochemical Modeling of Groundwater, Vadose and Geothermal Systems. Taylor & Francis Group, 2011.

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Bundschuh, Jochen, and Michael Zilberbrand. Geochemical Modeling of Groundwater, Vadose and Geothermal Systems. Taylor & Francis Group, 2017.

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Book chapters on the topic "Vadose zone geochemistry"

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"Soil and Ground Water Geochemistry and Microbiology." In Practical Handbook of Soil, Vadose Zone, and Ground-Water Contamination. CRC Press, 2003. http://dx.doi.org/10.1201/9781420032147.ch3.

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Townsend, Margaret A., and Richard O. Sleezer. "Chapter 18 Factors affecting spatial patterns of vadose-zone nitrate in south-central Kansas." In Concepts and Applications in Environmental Geochemistry. Elsevier, 2007. http://dx.doi.org/10.1016/s1474-8177(07)05018-8.

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LaBrecque, Douglas, David L. Alumbaugh, Xianjin Yang, Lee Paprocki, and Jim Brainard. "Chapter 15 Three-dimensional monitoring of vadose zone infiltration using electrical resistivity tomography and cross-borehole ground-penetrating radar." In Methods in Geochemistry and Geophysics. Elsevier, 2002. http://dx.doi.org/10.1016/s0076-6895(02)80097-x.

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Conference papers on the topic "Vadose zone geochemistry"

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Bandai, Toshiyuki, and Carl Steefel. "Inverse modeling in vadose zone geochemistry using differentiable modeling in JAX." In Goldschmidt 2024. Geochemical Society, 2024. https://doi.org/10.46427/gold2024.24392.

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Reports on the topic "Vadose zone geochemistry"

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Ainsworth, Calvin C. Project Work Plan Chromium Vadose Zone Characterization and Geochemistry. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/944519.

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Zachara, John M., Jim A. Davis, Chongxuan Liu, et al. Uranium Geochemistry in Vadose Zone and Aquifer Sediments from the 300 Area Uranium Plume. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/15020114.

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