dc.creatorLatrubesse, Edgardo Manuel
dc.creatorAmsler, Mario Luis
dc.creatorde Morais, R.P.
dc.creatorAquino, S.
dc.date.accessioned2020-04-07T22:08:52Z
dc.date.accessioned2022-10-15T12:03:30Z
dc.date.available2020-04-07T22:08:52Z
dc.date.available2022-10-15T12:03:30Z
dc.date.created2020-04-07T22:08:52Z
dc.date.issued2009-12
dc.identifierLatrubesse, Edgardo Manuel; Amsler, Mario Luis; de Morais, R.P.; Aquino, S.; The geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River; Elsevier Science; Geomorphology; 113; 3-4; 12-2009; 239-252
dc.identifier0169-555X
dc.identifierhttp://hdl.handle.net/11336/102246
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4383877
dc.description.abstractAbstract: The geomorphic response of the Araguaia River to catastrophic deforestation of the Cerrado since 1970s is discussed. With a mean annual discharge of 6,500m3/s and a drainage area of ~380,000km2, the Araguaia River is the main system draining the savannas of Central Brazil. Here, we demonstrate that the river is undergoing a substantive increase in bed load transport and changes in its geomorphology. A multi-approach methodology was used and involved detailed geomorphologic mapping for three decades (60,70,90), a budget of erosional and deposition areas using GIS, volumetric calculations, and estimations of bed load transport. Our results show that the alluvial plain is undergoing active sedimentation and 233 Mt of sediments were stored by channel activity in a reach 570km long of the middle Araguaia.. The bedload transport has increased 31% from 6.6 Mt in the sixties to 8.8 Mt in the 1990s and the channel pattern has been metamorphosed to some extent. This is an outstanding current example of short term geomorphic response to deforestation in a large pristine tropical fluvial system without direct human interventions in the channel.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.geomorph.2009.03.014
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectARAGUAIA RIVER
dc.subjectDEFORESTATION
dc.subjectTROPICAL
dc.subjectSOUTH AMERICA
dc.subjectLARGE RIVERS
dc.subjectGEOMORPHOLOGIC RESPONSE
dc.titleThe geomorphologic response of a large pristine alluvial river to tremendous deforestation in the South American tropics: The case of the Araguaia River
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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