Application of GPR in the study of a modern alluvial megafan: The case of the Taquari river in Pantanal wetland, West-Central Brazil

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dc.contributor.authorPorsani, Jorge Luís
dc.contributor.authorAssine, Mario Luis [UNESP]
dc.contributor.authorMoutinho, Leandro
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:18Z
dc.date.available2014-05-27T11:21:18Z
dc.date.issued2005-04-01
dc.description.abstractA novel and timely ground penetrating radar (GPR) survey has been carried out in Pantanal from Mato Grosso State, west-central Brazil. Fieldwork was carried out on February/2001 and August/2002 in an attempt to understand avulsion processes that are occurring within Taquari alluvial megafan. The main objectives were to map channel, crevasse and floodplain morphology, as well as active sedimentary bedforms. Many GPR profiles were acquired in the medium and lower Taquari River course. Subaqueous megaripples and exposed sand bars were identified in the medium fan area. Similar features were observed in the lower fan channels, where there were many crevasses in the marginal levees. During the flooding seasons, the flow splays out on to the floodplain, where new distributary channels are being formed. GPR data show that the lower fan, Taquari channel is topographically higher than the adjacent floodplain, thus favoring avulsion as a natural process of river course shifting. GPR data obtained during the wet and dry seasons, together with sedimentology information have been very important in characterizing the fluvial dynamics, and avulsion phenomena. © 2005 Springer Science+Business Media, Inc.en
dc.description.affiliationDepartamento de Geofísica Instituto de Astronomia Geofísica e Ciências Atmosféricas Universidade de São Paulo, São Paulo
dc.description.affiliationDepartamento de Geologia Aplicada Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, Rio Claro
dc.description.affiliationPós-Graduação em Geofísica Instituto de Astronomia Geofísica e Ciências Atmosféricas Universidade de São Paulo, São Paulo
dc.description.affiliationUnespDepartamento de Geologia Aplicada Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, Rio Claro
dc.format.extent219-233
dc.identifierhttp://dx.doi.org/10.1007/s11220-005-0008-x
dc.identifier.citationSubsurface Sensing Technologies and Applications, v. 6, n. 2, p. 219-233, 2005.
dc.identifier.doi10.1007/s11220-005-0008-x
dc.identifier.issn1566-0184
dc.identifier.lattes0471102133658128
dc.identifier.scopus2-s2.0-27644587578
dc.identifier.urihttp://hdl.handle.net/11449/68169
dc.language.isoeng
dc.relation.ispartofSubsurface Sensing Technologies and Applications
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAvulsion
dc.subjectBrazil
dc.subjectGPR
dc.subjectGround penetrating radar
dc.subjectPantanal wetland
dc.subjectTaquari river
dc.subjectLevees
dc.subjectRivers
dc.subjectSedimentology
dc.subjectWatersheds
dc.subjectGround penetrating radar systems
dc.titleApplication of GPR in the study of a modern alluvial megafan: The case of the Taquari river in Pantanal wetland, West-Central Brazilen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.author.lattes0471102133658128
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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