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dc.contributor.author
Monachesi, Leonardo Bruno
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dc.contributor.author
Zyserman, Fabio Ivan
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dc.contributor.author
Jouniaux, L.
dc.date.available
2019-10-21T17:54:41Z
dc.date.issued
2018-06
dc.identifier.citation
Monachesi, Leonardo Bruno; Zyserman, Fabio Ivan; Jouniaux, L.; An analytical solution to assess the SH seismoelectric response of the vadose zone; Wiley Blackwell Publishing, Inc; Geophysical Journal International; 213; 3; 6-2018; 1999-2019
dc.identifier.issn
0956-540X
dc.identifier.uri
http://hdl.handle.net/11336/86656
dc.description.abstract
We derive an analytical solution of the seismoelectric conversions generated in the vadose zone, when this region is crossed by a pure shear horizontal (SH) wave. Seismoelectric conversions are induced by electrokinetic effects linked to relative motions between fluid and porous media. The considered model assumes a 1D soil constituted by a single layer on top of a half-space in contact at the water table, and a shearing force located at the earth?s surface as the wave source. The water table is an interface expected to induce a seismoelectric interfacial response (IR). The top layer represents a porous rock in which porous space is partially saturated by water and air, while the half-space is completely saturated with water, representing the saturated zone. The analytical expressions for the coseismic fields and the interface responses, both electric and magnetic, are derived by solving Pride?s equations with proper boundary conditions. An approximate analytical expression of the solution is also obtained, which is very simple and applicable in a fairly broad set of situations. Hypothetical scenarios are proposed to study and analyse the dependence of the electromagnetic fields on various parameters of the medium. An analysis of the approximate solution is also made together with a comparison to the exact solution. The main result of the present analysis is that the amplitude of the interface response generated at the water table is found to be proportional to the jump in the electric current density, which in turn depends on the saturation contrast, poro-mechanical and electrical properties of the medium and on the amplitude of the solid displacement produced by the source. This result is in agreement with the one numerically obtained by the authors, which has been published in a recent work. We also predict the existence of an interface response located at the surface, and that the electric interface response is several orders of magnitude bigger than the electric coseismic field, whereas it is the opposite using compressional waves as shown by theoretical and experimental results. This fact should encourage the performance of field and laboratory tests to check the viability of SHTE seismoelectrics as a near surface prospecting/monitoring tool.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ELECTRICAL PROPERTIES
dc.subject
HYDROGEOPHYSICS
dc.subject
PERMEABILITY AND POROSITY
dc.subject
WAVE PROPAGATION
dc.subject.classification
Geoquímica y Geofísica
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
An analytical solution to assess the SH seismoelectric response of the vadose zone
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-27T14:32:35Z
dc.journal.volume
213
dc.journal.number
3
dc.journal.pagination
1999-2019
dc.journal.pais
Reino Unido
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dc.description.fil
Fil: Monachesi, Leonardo Bruno. Universidad Nacional de Río Negro. Sede Alto Valle. Instituto de Investigaciones en Paleobiología y Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Zyserman, Fabio Ivan. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Jouniaux, L.. Université de Strasbourg; Francia
dc.journal.title
Geophysical Journal International
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/gji/ggy101
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/gji/article-abstract/213/3/1999/4939267?redirectedFrom=fulltext
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