Please use this identifier to cite or link to this item: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1156146
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dc.contributor.authorNASCIMENTO, C. W. R. do
dc.contributor.authorCEDDIA, M. B.
dc.contributor.authorVASQUES, G. M.
dc.contributor.authorRODRIGUES, H. M.
dc.contributor.authorMARTINS, S. S.
dc.contributor.authorOLIVEIRA, R. P. de
dc.contributor.authorTAVARES, S. R. de L.
dc.date.accessioned2023-08-29T12:27:44Z-
dc.date.available2023-08-29T12:27:44Z-
dc.date.created2023-08-28
dc.date.issued2023
dc.identifier.citationRio de Janeiro: Embrapa Solos, 2023.
dc.identifier.issn1678-0892
dc.identifier.urihttp://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1156146-
dc.descriptionThe Ground Penetrating Radar (GPR) has potential to characterize soils both vertically and horizontally. The effectiveness of using GPR relies on the interpretation of soil targets in the radargrams. For identifying the targets in their correct depths, a velocity model of the terrain is required. However, a velocity model cannot be directly obtained from GPR models using a monostatic antenna. An alternative is the generation of a depth model by measuring the velocity of the electromagnetic pulse from hyperbolas created in the radargram from the interaction of the pulse with point scatterers. On the other hand, the radargram does not always present these point scatterers for the estimation of the pulse velocity and generation of an accurate depth model. Thus, this work aimed to assess the feasibility of using iron rods as markers of the depths of soil horizons transitions in GPR images (750 MHz antenna) of Planosols, and as point scatterers to generate hyperbolas for deriving depth models for converting the Y-axis of the radargram from time to depth units. The experimental area is located in Seropédica municipality, southeastern Brazil. Three soil profiles were described and classified as Planosols, which were located at the footslope position. Iron rods (80-cm long by 8-mm in diameter) were inserted horizontally in the transitions of the soil horizons. Images (radargrams) were obtained using a GPR with a monostatic shielded antenna of 750 MHz frequency. The radargrams were pre-processed using static correction and dewow to remove noise. The pulse velocity was estimated by fitting the hyperbolas generated by the buried iron rods. As results, the 750 MHz antenna allowed visualizing the iron rods features (hyperbolas), especially in sandier horizons in the radargrams. Pulse velocity estimation was possible, which allowed the time-to-depth conversion of the Y-axis, and thus, positioning vertically the horizons transitions in the radargrams. In Planosols, the vertical and horizontal distribution of the E-to-B horizon transitions, as imaged by the GPR, is important information for irrigation planning, land zoning and soil survey.
dc.formatE-book.
dc.language.isoeng
dc.relation.ispartofseries(Embrapa Solos. Boletim de pesquisa e desenvolvimento, 285).
dc.rightsopenAccess
dc.subjectIron rods
dc.subjectPoximal soil sensing
dc.subjectExploration geophysics
dc.subjectDielectric constant
dc.subjectSensoriamento proximal do solo
dc.subjectSelo ODS 2eng
dc.titleIdentifying soil horizons transitions for ground-truthing and interpreting ground penetrating radar (GPR) imagery of Planosols.
dc.typeFolhetos
dc.subject.thesagroHorizonte
dc.subject.thesagroSolo
dc.subject.nalthesaurusSoil horizons
dc.description.notesODS.eng
riaa.ainfo.id1156146
riaa.ainfo.lastupdate2023-08-29
dc.contributor.institutionCARLOS WAGNER RODRIGUES DO NASCIMENTO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; MARCOS BACIS CEDDIA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; GUSTAVO DE MATTOS VASQUES, CNPS; HUGO MACHADO RODRIGUES, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; SAULO SIQUEIRA MARTINS, UNIVERSIDADE FEDERAL DO PARÁ; RONALDO PEREIRA DE OLIVEIRA, CNPS; SILVIO ROBERTO DE LUCENA TAVARES, CNPS.
Appears in Collections:Boletim de Pesquisa e Desenvolvimento (CNPS)

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