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Journal articles on the topic 'Vadose zone geochemistry'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

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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2

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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3

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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4

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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6

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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7

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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8

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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9

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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10

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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11

Al, T. A., D. W. Blowes, J. L. Jambor, and J. D. Scott. "The geochemistry of mine-waste pore water affected by the combined disposal of natrojarosite and base-metal sulphide tailings at Kidd Creek, Timmins, Ontario." Canadian Geotechnical Journal 31, no. 4 (1994): 502–12. http://dx.doi.org/10.1139/t94-059.

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Since 1985 natrojarosite residue (NaFe3(SO4)2(OH)6) from the zinc refinery at Kidd Creek near Timmins, Ontario, has been disposed of with mine tailings containing up to 25 wt.% pyrite. Pore-water geochemical data have been collected from depth profiles through the vadose and saturated zones in the tailings. Three zones are defined by the concentrations of metals, SO4, and HCO3. In the deepest zone the concentrations of most metals and anions are below detection and the concentrations of Fe, Mg, Na, K, Zn, Mn, HCO3, and SO4 are low, similar to those in the mill discharge water. Higher concentra

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12

Čenčur Curk, B. "Experimental Study of Solute Transport in the Vadose Zone of Fractured Rock." Mineralogical Magazine 62A, no. 1 (1998): 292–93. http://dx.doi.org/10.1180/minmag.1998.62a.1.154.

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13

CHÁVEZ, WILLIAM X. "Supergene Oxidation of Copper Deposits: Zoning and Distribution of Copper Oxide Minerals." SEG Discovery, no. 41 (April 1, 2000): 1–21. http://dx.doi.org/10.5382/segnews.2000-41.fea.

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ABSTRACT Copper oxides represent an attractive exploration target because even low-grade prospects have the potential to produce low-cost copper in an environmentally friendly fashion. Derived from liypogene and/or supergene sulfides, copper oxides comprise a series of distinct assemblages that characterize a variable pH. oxidizing geochemical environment known as “the oxide zone.” Development of oxide copper minerals is a function of source-rock and host-rock mineralogy, pyrite and other (copper) sulfide abundance and distribution, fracture density and distribution, phreatic and/or vadose zon

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14

Zachara, John M., Calvin C. Ainsworth, Gordon E. Brown, et al. "Chromium speciation and mobility in a high level nuclear waste vadose zone plume." Geochimica et Cosmochimica Acta 68, no. 1 (2004): 13–30. http://dx.doi.org/10.1016/s0016-7037(03)00417-4.

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15

Langston, Abigail L., Gregory E. Tucker, Robert S. Anderson, and Suzanne P. Anderson. "Exploring links between vadose zone hydrology and chemical weathering in the Boulder Creek critical zone observatory." Applied Geochemistry 26 (June 2011): S70—S71. http://dx.doi.org/10.1016/j.apgeochem.2011.03.033.

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16

al Hagrey, S. A., and Johannes Michaelsen. "Resistivity and percolation study of preferential flow in vadose zone at Bokhorst, Germany." GEOPHYSICS 64, no. 3 (1999): 746–53. http://dx.doi.org/10.1190/1.1444584.

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Traditional nondestructive resistivity techniques have been applied in combination with tracer displacement and conventional soil moisture recording methods [i.e., buried tensiometer and time domain reflectometry (TDR)] for studying flow processes at an arable site in Bokhorst, Germany. Three water infiltration experiments were carried out using tap water spiked with a nonreactive tracer at different concentrations. The study aimed at exploring the capabilities of these combined techniques for tracing the preferential movement of water in the uppermost 1.5 m of the highly heterogeneous vadose

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17

Druhan, Jennifer L., Nicole Fernandez, Jia Wang, William E. Dietrich, and Daniella Rempe. "Seasonal shifts in the solute ion ratios of vadose zone rock moisture from the Eel River Critical Zone Observatory." Acta Geochimica 36, no. 3 (2017): 385–88. http://dx.doi.org/10.1007/s11631-017-0169-z.

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18

Petit, A., A. Cerepi, O. Le Roux, et al. "Study of Water Transfer Dynamics in a Carbonate Vadose Zone from Geophysical Properties." Pure and Applied Geophysics 178, no. 6 (2021): 2257–85. http://dx.doi.org/10.1007/s00024-021-02746-7.

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19

Goodfellow, B. W., G. E. Hilley, and M. S. Schulz. "Vadose zone controls on weathering intensity and depth: Observations from grussic saprolites." Applied Geochemistry 26 (June 2011): S36—S39. http://dx.doi.org/10.1016/j.apgeochem.2011.03.023.

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20

Cerepi, Adrian. "High-characterization of Vadose Zone Dynamics in Limestone Underground Quarries by Time Domain Reflectometry." Pure and Applied Geophysics 161, no. 2 (2004): 365–84. http://dx.doi.org/10.1007/s00024-003-2442-9.

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21

McClain, Cynthia N., Scott Fendorf, Shane T. Johnson, Alana Menendez, and Kate Maher. "Lithologic and redox controls on hexavalent chromium in vadose zone sediments of California’s Central Valley." Geochimica et Cosmochimica Acta 265 (November 2019): 478–94. http://dx.doi.org/10.1016/j.gca.2019.07.044.

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22

Mazzilli, Naomi, Marie Boucher, Konstantinos Chalikakis, Anatoly Legchenko, Hervé Jourde, and Cédric Champollion. "Contribution of magnetic resonance soundings for characterizing water storage in the unsaturated zone of karst aquifers." GEOPHYSICS 81, no. 4 (2016): WB49—WB61. http://dx.doi.org/10.1190/geo2015-0411.1.

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Understanding the role of the unsaturated zone in aquifer recharge and contaminant attenuation processes is a major challenge for the protection and management of karstic water resources. We present the potential of the magnetic resonance soundings (MRS) geophysical method for characterizing the vadose zone of karst aquifers composed of epikarst and infiltration layers. To investigate the hydraulic functioning of the Durzon karst system located on the Larzac plateau (southern France), we used the MRS method at 16 sites. The MRS results have been compared with available geologic information and

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23

Zyserman, F. I., L. B. Monachesi, and L. Jouniaux. "Dependence of shear wave seismoelectrics on soil textures: a numerical study in the vadose zone." Geophysical Journal International 208, no. 2 (2016): 918–35. http://dx.doi.org/10.1093/gji/ggw431.

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24

Carlsson, Erik, Björn Öhlander, and Henning Holmström. "Geochemistry of the infiltrating water in the vadose zone of a remediated tailings impoundment, Kristineberg mine,northern Sweden." Applied Geochemistry 18, no. 5 (2003): 659–74. http://dx.doi.org/10.1016/s0883-2927(02)00156-7.

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25

Blowes, David W., and John L. Jambor. "The pore-water geochemistry and the mineralogy of the vadose zone of sulfide tailings, Waite Amulet, Quebec, Canada." Applied Geochemistry 5, no. 3 (1990): 327–46. http://dx.doi.org/10.1016/0883-2927(90)90008-s.

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26

Costabel, Stephan, and Ugur Yaramanci. "Relative hydraulic conductivity in the vadose zone from magnetic resonance sounding — Brooks-Corey parameterization of the capillary fringe." GEOPHYSICS 76, no. 3 (2011): G61—G71. http://dx.doi.org/10.1190/1.3552688.

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The magnetic resonance sounding (MRS) method is used for noninvasive one-dimensional assessment of aquifer structures, i.e., for estimating the vertical water content and hydraulic conductivity distributions in the saturated zone. So far, MRS interpretation schemes for estimating the hydraulic conductivity as a function of the saturation degree in the vadose zone have not been developed. In this study we developed a new inversion scheme for MRS to estimate the relative hydraulic conductivity [Formula: see text], which is the ratio of the unsaturated and saturated conductivities. The new approa

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27

Che-Alota, Vukenkeng, Estella A. Atekwana, Eliot A. Atekwana, William A. Sauck, and D. Dale Werkema. "Temporal geophysical signatures from contaminant-mass remediation." GEOPHYSICS 74, no. 4 (2009): B113—B123. http://dx.doi.org/10.1190/1.3139769.

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We have previously documented changes in bulk electrical conductivity, self-potential (SP), and ground-penetrating-radar (GPR) reflections in a field setting caused by biogeochemical transformations of hydrocarbon-contaminated media. These transformations are associated with hydrocarbon biodegradation. The results of surface geophysical surveys acquired in 1996, 2003, and 2007 document changes in geophysical signatures associated with removing hydrocarbon mass in the contaminated zone. Initial investigations in 1996 showed that relative to background, the contaminated area was characterized by

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28

Oppong-Anane, Akua B., Katherine Y. Deliz Quiñones, Willie Harris, Timothy Townsend, and Jean-Claude J. Bonzongo. "Iron reductive dissolution in vadose zone soils: Implication for groundwater pollution in landfill impacted sites." Applied Geochemistry 94 (July 2018): 21–27. http://dx.doi.org/10.1016/j.apgeochem.2018.05.001.

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29

Alesse, Beatrice, Luciana Orlando, and Lucia Palladini. "Non‐invasive lab test in the monitoring of vadose zone contaminated by light non‐aqueous phase liquid." Geophysical Prospecting 67, no. 8 (2019): 2161–75. http://dx.doi.org/10.1111/1365-2478.12809.

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30

Newman, Brent D., Andrew R. Campbell, David I. Norman, and David B. Ringelberg. "A model for microbially induced precipitation of vadose-zone calcites in fractures at Los Alamos, New Mexico, USA." Geochimica et Cosmochimica Acta 61, no. 9 (1997): 1783–92. http://dx.doi.org/10.1016/s0016-7037(97)00025-2.

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31

Hamon, Youri, Yannick Santerre, Didier Granjeon, Gilles Conesa, and Jean Borgomano. "Early diagenesis in meteoric versus brackish environments: Example of the Late Oligocene-Early Miocene, littoral, mixed sedimentary succession of Carry-Le-Rouet (southeastern France)." Bulletin de la Société Géologique de France 184, no. 6 (2013): 601–20. http://dx.doi.org/10.2113/gssgfbull.184.6.601.

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AbstractIn the Carry-Le-Rouet region (southeastern France), the well exposed Late Oligocene-Early Miocene succession allows studying the early diagenesis in meteoric and brackish environments. This area provides unique and continuous outcrops of a mixed sedimentary succession (carbonate-siliciclastic shallow facies) with five particular sedimentary discontinuities resulting from various processes such as subaerial exposure, submarine erosion or bioturbation.Results from the diagenetic characterization (petrography and isotope geochemistry) show that the succession may be divided into three par

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32

Tobin, Benjamin W., Benjamin V. Miller, Matthew L. Niemiller, and Andrea M. Erhardt. "Expanding Karst Groundwater Tracing Techniques: Incorporating Population Genetic and Isotopic Data to Enhance Flow-Path Characterization." Hydrology 11, no. 2 (2024): 23. http://dx.doi.org/10.3390/hydrology11020023.

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Karst aquifers are unique among groundwater systems because of variable permeability and flow-path organization changes resulting from dissolution processes. Over time, changes in flow-path connectivity complicate interpretations of conduit network evolution in karst hydrogeology. Natural and artificial tracer techniques have long provided critical information for protecting karst aquifers and understanding the potential impacts on ecosystems and human populations. Conventional tracer methods are useful in karst hydrogeologic studies for delineating flow paths and defining recharge, storage, a

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33

Powell, Brian A., Daniel I. Kaplan, and Todd M. Miller. "Neptunium(V) sorption to vadose zone sediments: Reversible, not readily reducible, and predictable based on Fe-oxide content." Chemical Geology 481 (March 2018): 53–64. http://dx.doi.org/10.1016/j.chemgeo.2018.01.026.

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34

Kadİr, S., M. Eren, T. Külah, N. Önalgİl, M. Cesur, and A. Gürel. "Genesis of Late Miocene-Pliocene lacustrine palygorskite and calcretes from Kırşehir, central Anatolia, Turkey." Clay Minerals 49, no. 3 (2014): 473–94. http://dx.doi.org/10.1180/claymin.2014.049.3.09.

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AbstractThis paper addresses the mineralogy, geochemistry, and genesis of palygorskite and associated calcretes in the Kırşehir region. In this area, the Quaternary calcretes are present within and/or on lacustrine mudstones of the Kızılırmak Formation (Late Miocene-Pliocene). The calcretes occur in the form of nodules, tubes, fracture-infills, and hard laminated crusts (hardpans). Calcrete samples are predominantly composed of calcite associated with smectite, quartz, feldspar, and minor palygorskite. The lacustrine mudstone samples consist mainly of smectite and palygorskite with minor calci

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35

Ku, T. L., S. Luo, S. J. Goldstein, M. T. Murrell, W. L. Chu, and P. F. Dobson. "Modeling non-steady state radioisotope transport in the vadose zone – A case study using uranium isotopes at Peña Blanca, Mexico." Geochimica et Cosmochimica Acta 73, no. 20 (2009): 6052–64. http://dx.doi.org/10.1016/j.gca.2009.07.011.

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36

Öhlander, Björn, Magnus Land, Johan Ingri, and Anders Widerlund. "Mobility and Transport of Nd Isotopes in the Vadose Zone During Weathering of Granitic Till in a Boreal Forest." Aquatic Geochemistry 20, no. 1 (2013): 1–17. http://dx.doi.org/10.1007/s10498-013-9203-x.

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37

Hedenquist, Jeffrey W., and Antonio Arribas. "Exploration Implications of Multiple Formation Environments of Advanced Argillic Minerals." Economic Geology 117, no. 3 (2022): 609–43. http://dx.doi.org/10.5382/econgeo.4880.

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Abstract Advanced argillic minerals, as defined, include alunite and anhydrite, aluminosilicates (kaolinite, halloysite, dickite, pyrophyllite, andalusite, zunyite, and topaz), and diaspore. One or more of these minerals form in five distinctly different geologic environments of hydrolytic alteration, with pH 4–5 to &lt;1, most at depths &lt;500 m. (1) Where an intrusion-related hydrothermal system, typical of that associated with porphyry Cu ± Au deposits, evolves to white-mica stability, continued ascent and cooling of the white-mica–stable liquid results in pyrophyllite (± diaspore)

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Zhang, Fan, and Chi Zhang. "Probing water partitioning in unsaturated weathered rock using nuclear magnetic resonance." GEOPHYSICS 86, no. 5 (2021): WB189—WB205. http://dx.doi.org/10.1190/geo2020-0591.1.

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”Rock moisture” (exchangeable water stored in weathered bedrock beneath the soil) is a key and yet overlooked component in hydrologic cycles. It can be partitioned to free water and capillary-bound water. Determining dynamic partitioning of rock moisture is crucial for conceptualizing critical zone functions and climate and hydrologic modeling. However, the quantification of rock moisture partitioning is challenging, especially in rocks with complex pore structures and weathering patterns. Laboratory nuclear magnetic resonance (NMR) measurements are performed on heterogeneous bedrock samples f

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Sopliniak, Alexander, Roy Elkayam, and Ovadia Lev. "Quantification of dissolved organic matter in pore water of the vadose zone using a new ex-situ positive displacement extraction." Chemical Geology 466 (September 2017): 263–73. http://dx.doi.org/10.1016/j.chemgeo.2017.06.017.

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40

Gettings, Paul, David S. Chapman, and Rick Allis. "Techniques, analysis, and noise in a Salt Lake Valley 4D gravity experiment." GEOPHYSICS 73, no. 6 (2008): WA71—WA82. http://dx.doi.org/10.1190/1.2996303.

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Repeated high-precision gravity measurements using an automated gravimeter and analysis of time series of [Formula: see text] samples allowed gravity measurements to be made with an accuracy of [Formula: see text] or better. Nonlinear instrument drift was removed using a new empirical staircase function built from multiple station loops. The new technique was developed between March 1999 and September 2000 in a pilot study conducted in the southern Salt Lake Valley along an east-west profile of eight stations from the Wasatch Mountains to the Jordan River. Gravity changes at eight profile stat

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41

Bastani, Mehrdad, Juliane Hübert, Thomas Kalscheuer, Laust B. Pedersen, Alberto Godio, and Jean Bernard. "2D joint inversion of RMT and ERT data versus individual 3D inversion of full tensor RMT data: An example from Trecate site in Italy." GEOPHYSICS 77, no. 4 (2012): WB233—WB243. http://dx.doi.org/10.1190/geo2011-0525.1.

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Tensor radiomagnetotelluric (RMT) and electrical resistivity tomography (ERT) data were acquired along 10 parallel lines to image electrical resistivity of the vadose and the saturated zone in an area near Trecate, 45 km west of Milan in Italy. In 1994, the area was exposed to an oil contamination caused by a tank explosion and has since been subject to monitoring and remediation programs. For the first time, we have examined a 3D inversion of full tensor RMT data and have compared the results with 2D joint inversion of RMT and ERT data. First, a synthetic 3D resistivity model with similar var

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Falzone, Samuel, and Kristina Keating. "Algorithms for removing surface water signals from surface nuclear magnetic resonance infiltration surveys." GEOPHYSICS 81, no. 4 (2016): WB97—WB107. http://dx.doi.org/10.1190/geo2015-0386.1.

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Surface nuclear magnetic resonance (surface NMR) is a geophysical method that directly detects water and can be used to determine the depth profile of water content within the subsurface. Although surface NMR has proven useful for investigating groundwater in the saturated zone, its use to study the vadose zone is still in development. A recent study for the South Avra Valley Storage and Recovery Project (SAVSARP) demonstrated that surface NMR can be used to monitor infiltrating water associated with aquifer storage and recovery, a water resource management method in which surface water is sto

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Goss, Michael J., Wilfried Ehlers, and Adrian Unc. "The role of lysimeters in the development of our understanding of processes in the vadose zone relevant to contamination of groundwater aquifers." Physics and Chemistry of the Earth, Parts A/B/C 35, no. 15-18 (2010): 913–26. http://dx.doi.org/10.1016/j.pce.2010.06.004.

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44

Li, Rongfu, Xiaohong Ruan, Tianhai Ma, Ying Bai, and Congqiang Liu. "In-situ nitrogen fate in the vadose zone of different soil types and its implications for groundwater quality in the Huaihe River Basin, China." Acta Geochimica 39, no. 3 (2020): 281–90. http://dx.doi.org/10.1007/s11631-020-00412-8.

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45

Calligaris, Chiara, Lisa Ghezzi, Riccardo Petrini, Davide Lenaz, and Luca Zini. "Evaporite Dissolution Rate through an on-site Experiment into Piezometric Tubes Applied to the Real Case-Study of Quinis (NE Italy)." Geosciences 9, no. 7 (2019): 298. http://dx.doi.org/10.3390/geosciences9070298.

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The present paper deals with a field experiments on evaporite rock samples and groundwater investigations in the Quinis test site, a hamlet of the Enemonzo municipality in NE Italy, were sinkholes occurred in the past and are still occurring causing severe damage to the existing infrastructures. The area is characterised by a Carnian evaporitic bedrock made of gypsum and anhydrite mantled by alluvial and colluvial deposits. In order to evaluate the loss of weight and volume of the subcropping evaporites as responsible for sinkholes, a field-experiment was carried out. Inside seven piezometers,

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Ulrich, Craig, and Lee Slater. "Induced polarization measurements on unsaturated, unconsolidated sands." GEOPHYSICS 69, no. 3 (2004): 762–71. http://dx.doi.org/10.1190/1.1759462.

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Induced polarization (IP) measurements were obtained on unsaturated, unconsolidated sediments during (1) evaporative drying and (2) pressure drainage followed by subsequent imbibition (water reentry). Porous ceramic discs were used with existing laboratory IP instrumentation to permit accurate IP measurements on unsaturated samples. Polarization magnitude during evaporative drying approximates a power law dependence on saturation. Saturation exponents for the polarization term were consistently less than Archie conduction exponents, although no clear relationship between the exponents was obse

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Zhang, Jian, Dominique Genty, Colette Sirieix, et al. "Data-model comparisons of isotopic and hydrological variabilities of the karstic vadose zone above Villars Cave, SW-France based on 20 years' monitoring record." Chemical Geology 642 (December 2023): 121802. http://dx.doi.org/10.1016/j.chemgeo.2023.121802.

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Lucas, L., A. Joubert, F. Garrido, C. Joulian, D. Breeze, and M. Jauzein. "Behavior of toxic elements in agricultural and industrial vadose zone soils of three Ebro and Meuse river basin areas in the context of global climate change." Geochimica et Cosmochimica Acta 70, no. 18 (2006): A373. http://dx.doi.org/10.1016/j.gca.2006.06.752.

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Rucker, Dale F., Meng H. Loke, Marc T. Levitt, and Gillian E. Noonan. "Electrical-resistivity characterization of an industrial site using long electrodes." GEOPHYSICS 75, no. 4 (2010): WA95—WA104. http://dx.doi.org/10.1190/1.3464806.

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An electrical-resistivity survey was completed at the T tank farm at the Hanford nuclear site in Washington State, U.S.A. The purpose of the survey was to define the lateral extent of waste plumes in the vadose zone in and around the tank farm. The T tank farm consists of single-shell tanks that historically have leaked and many liquid-waste-disposal facilities that provide a good target for resistivity mapping. Given that the site is highly industrialized with near-surface metallic infrastructure that potentially could mask any interpretable waste plume, it was necessary to use the many wells

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Miller, Richard D., and Jianghai Xia. "Large near‐surface velocity gradients on shallow seismic reflection data." GEOPHYSICS 63, no. 4 (1998): 1348–56. http://dx.doi.org/10.1190/1.1444436.

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Extreme velocity gradients occasionally present within near‐surface materials can inhibit optimal common midpoint (CMP) stacking of near‐surface reflection arrivals. For example, abrupt increases in velocity are observed routinely at the bedrock surface and at the boundary between the vadose and the saturated zone. When a rapid increase in near‐surface velocity is found, NMO correction artifacts manifested on CMP gathers as sample reversion, sample compression, or duplication of reflection wavelets can reduce S/N ratio on stacked data or can stack coherently. Elimination of these nonstretch‐re

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