Time-lapse magnetic resonance sounding measurements for numerical modeling of water flow in variably saturated media

Legchenko, Anatoly; Baltassat, Jean-Michel; Duwig, Céline; Boucher, Marie; Girard, Jean-François; Soruco, Alvaro; Beauce, A.; Mathieu, Francis; Legoût, Cédric; Descloîtres, Marc; Patricia, Flores Avilès Gabriela

doi:10.1016/j.jappgeo.2020.103984

Cited by 18 publications

(17 citation statements)

References 79 publications

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“…The θ s values of the rock samples were in good agreement with those obtained by Legchenko et al. (2020) in a study conducted near the experimental site.…”

Section: Resultssupporting

confidence: 90%

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Relationship between hydraulic properties and material features in a heterogeneous vadose zone of a vulnerable limestone aquifer

Aldana

Isch

Bruand

et al. 2021

Vadose Zone Journal

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Limestone aquifers constitute important drinking water resources but are vulnerable to groundwater contaminations. They are also known to be often heterogeneous. However, the hydraulic properties of their entire vadose zone and the relationship of these hydraulic properties with their mineralogical and geochemical characteristics remain rarely studied. The hydraulic properties of soft (soil, powdery limestone, and calcareous sand) and hard (limestone rock) materials sampled throughout the entire vadose zone profile of the Beauce limestone aquifer (France) were determined with

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“…The θ s values of the rock samples were in good agreement with those obtained by Legchenko et al. (2020) in a study conducted near the experimental site.…”

Section: Resultssupporting

confidence: 90%

“…Table 3). The θ s values of the rock samples were in good agreement with those obtained by Legchenko et al (2020) in a study conducted near the experimental site. An artifact related to the measurement of K s was observed with respect to the values of K(h).…”

Section: Saturated Hydraulic Properties Of the Vz Materialssupporting

confidence: 86%

Relationship between hydraulic properties and material features in a heterogeneous vadose zone of a vulnerable limestone aquifer

Aldana

Isch

Bruand

et al. 2021

Vadose Zone Journal

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“…Vadose Zone Journal continuous technical and methodical developments, the spatial distribution of groundwater up to a few tens of meters depth can be observed also in two or three dimensions (Dlugosch et al, 2014;Jiang et al, 2015aJiang et al, , 2015b. Whereas most of the SNMR case studies in the literature are related to the saturated zone, few studies focus on specific vadose zone characteristics and the corresponding water dynamics (Costabel & Günther, 2014;Legchenko et al, 2020;Walsh et al, 2014). Because of its main benefit of being directly sensitive to pore water, SNMR is expected to be qualified also for detecting soil moisture and its lateral distribution.…”

Section: Introductionmentioning

confidence: 99%

Feasibility study on prepolarized surface nuclear magnetic resonance for soil moisture measurements

Hiller

Costabel

Radić³

et al. 2021

Vadose Zone Journal

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In the past few years, small-scale (2 m) prepolarized surface nuclear magnetic resonance (SNMR) has gained increasing interest in the research community. As recent studies demonstrated, the application of a strong prepolarization field enhances the SNMR signal of coils with a footprint <1 m 2 up to a level that even enables investigations in urban areas. In particular, it is expected that this noninvasive method provides the soil moisture distribution in the upper 2 m of the subsurface in the near future. However, until now all field experiments have been carried out on water reservoirs only, in an approach to test and implement this rather new technique into the field of SNMR applications. We present the first prepolarized SNMR measurement on a real soil and demonstrate the general feasibility of this technique to qualitatively and quantitatively detect soil moisture in the upper first 0.5 m. Our soil moisture measurements are validated by independent time domain reflectometry data. To complement the field experiments with numerical simulations, we adapted the underlying SNMR spin dynamics simulations and account for prepolarization switch-off effects in the forward modeling of the SNMR excitation.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…The amplitude of the spin magnetization linearly depends on the number of excited proton spins and thus on the amount of water in the sensitive area of the loop configuration on the surface (Behroozmand et al., 2014; Legchenko & Valla, 2002; Müller‐Petke & Yaramanci, 2015). Whereas most of the SNMR case studies in the literature are related to the saturated zone, few studies focus on specific vadose zone characteristics and their corresponding water dynamics (Costabel & Günther, 2014; Legchenko et al., 2020; Walsh et al., 2014). This is mainly because the conventionally measured signal strength scales with the dimension of the surface loop layout.…”

Section: Introductionmentioning

confidence: 99%

First Measurements of Surface Nuclear Magnetic Resonance Signals Without an Oscillating Excitation Pulse – Exploiting Non‐Adiabatic Prepolarization Switch‐Off

Hiller

Costabel

Dlugosch

et al. 2021

Geophysical Research Letters

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Time-lapse magnetic resonance sounding measurements for numerical modeling of water flow in variably saturated media

Cited by 18 publications

References 79 publications

Relationship between hydraulic properties and material features in a heterogeneous vadose zone of a vulnerable limestone aquifer

Relationship between hydraulic properties and material features in a heterogeneous vadose zone of a vulnerable limestone aquifer

Feasibility study on prepolarized surface nuclear magnetic resonance for soil moisture measurements

First Measurements of Surface Nuclear Magnetic Resonance Signals Without an Oscillating Excitation Pulse – Exploiting Non‐Adiabatic Prepolarization Switch‐Off

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