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dc.contributor.author
Martinelli, Hilda Patricia
dc.contributor.author
Robledo, Fabiana Elizabeth
dc.contributor.author
Osella, Ana Maria
dc.contributor.author
de la Vega, Matias
dc.date.available
2018-08-17T13:40:47Z
dc.date.issued
2012-01
dc.identifier.citation
Martinelli, Hilda Patricia; Robledo, Fabiana Elizabeth; Osella, Ana Maria; de la Vega, Matias; Assessment of the distortions caused by a pipe and an excavation in the electric and electromagnetic responses of a hydrocarbon-contaminated soil; Elsevier Science; Journal Of Applied Geophysics; 77; 1-2012; 21-29
dc.identifier.issn
0926-9851
dc.identifier.uri
http://hdl.handle.net/11336/56071
dc.description.abstract
Here, we present the results of a geophysical survey performed to characterize a hydrocarbon contamination plume, arising from a puncture in a master crude oil pipe in Argentina. This pipe was buried in an inhabited suburban yard with flat topography. At the moment of the event a stretch of the duct was uncovered and the leaked oil flooded the terrain up to several meters around the puncture. The contamination was produced by infiltration from the surface and also by flowing through the inner layers. The first steps in the treatment of the spill were to pump the oil, excavate the sector nearby the puncture and repair the pipe. Around one year later, we preformed the geophysical prospecting, which goal was to determine the extent of the contaminant plume, required for selecting adequate remediation strategies. We combined dual-coil, frequency domain electromagnetic induction surveys and 2D dipole-dipole geoelectrical profiling. Besides, we performed Wenner soundings at several positions on the walls of the excavation, where contaminated and clean sediments were exposed. From the 1D inversion of the electromagnetic data, 2D inversion of the dipole-dipole data, and Wenner data, we found that, in general, the contamination decreased the resistivity of the affected subsoil volumes. However, three of the geoelectrical profiles exhibited localized, very resistive anomalies, which origin was not clear. They did not seem to be associated to the presence of high concentrations of poorly or non-degraded hydrocarbon, since two of these profiles crossed the more contaminated area, but the other was located quite further away. As an attempt to identify the cause of these anomalies, we carried out a 3D numerical simulation of the effects of the pipe and the excavation on the 2D dipole-dipole images. From this study, we could effectively determine that they were mainly distortions generated by those structures. This allowed for providing a proper interpretation of the images of the three profiles, consistent with the other results. Thus, we could finally delimit the impacted zone and ascertain the main features of the contaminant plume. © 2011 Elsevier B.V..
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
3d Distortions Caused by A Pipe And An Excavation
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3d Numerical Simulation
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Dipole-Dipole Geoelectric
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Dual-Coil
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Hydrocarbon Contamination
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Assessment of the distortions caused by a pipe and an excavation in the electric and electromagnetic responses of a hydrocarbon-contaminated soil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-10T17:45:48Z
dc.journal.volume
77
dc.journal.pagination
21-29
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Martinelli, Hilda Patricia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Grupo de Geofísica Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Robledo, Fabiana Elizabeth. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Grupo de Geofísica Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Osella, Ana Maria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Grupo de Geofísica Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: de la Vega, Matias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Grupo de Geofísica Aplicada; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.journal.title
Journal Of Applied Geophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jappgeo.2011.10.016
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