Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland
The Pantanal wetland is a complex landscape with distinct hydrogeomorphic compartments, with singular and hydrosedimentary processes. Examining these processes draws great interest in understanding Pantanal dynamics for both the management of the system and the geological record predicted by facies...
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| Format: | Article |
| Language: | English |
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União da Geomorfologia Brasileira
2019-03-01
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| Series: | Revista Brasileira de Geomorfologia |
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| Online Access: | http://www.lsie.unb.br/rbg/index.php/rbg/article/view/1500 |
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| author | Hudson de Azevedo Macedo José Cândido Stevaux Aguinaldo Silva Eder Renato Merino Edward Limin Lo Mario Luis Assine |
| author_facet | Hudson de Azevedo Macedo José Cândido Stevaux Aguinaldo Silva Eder Renato Merino Edward Limin Lo Mario Luis Assine |
| author_sort | Hudson de Azevedo Macedo |
| collection | DOAJ |
| description | The Pantanal wetland is a complex landscape with distinct hydrogeomorphic compartments, with singular and hydrosedimentary processes. Examining these processes draws great interest in understanding Pantanal dynamics for both the management of the system and the geological record predicted by facies models. Hydrosedimentary data in the Pantanal remain scarce, in spite of government efforts to improve and increase data collection in the Upper Paraguay Basin. This study aims to enhance the understanding of active hydrosedimentary processes in the Pantanal Paraguay trunk-river system in the Corumbá reach. Hydrosedimentary surveys were accomplished in the main channel and tributaries of the Paraguay River. These surveys helped characterize the hydrosedimentary dynamics to consider the active sedimentary processes in this reach. The Paraguay River interacts complexly with its floodplain, which functions as a reservoir retaining flood water and disturbing river discharge. Bathymetric surveying showed that Paraguay River channel has longitudinal compound bar bedforms built by superimposition of ripples. The backwater effect, possibly related with both hydrological regime and geomorphological characteristics of the area, was detected by means of rating-curve analysis of the gauge stations. This effect is hydrologically produced by the out-of-phase flood pulse of the Pantanal and geomorphically driven by the hydraulic bottleneck of the Urucum and Bodoquena massifs. Both factors possibly occur simultaneously. The hydrogeomorphic characteristics (morphology, river competence, and stream power) of the Paraguay River denote that the elaboration of models more appropriate to the Pantanal context is needed. |
| first_indexed | 2024-04-24T15:37:51Z |
| format | Article |
| id | doaj.art-e28f32e4417c4e26978ff382938f6a65 |
| institution | Directory Open Access Journal |
| issn | 1519-1540 2236-5664 |
| language | English |
| last_indexed | 2024-04-24T15:37:51Z |
| publishDate | 2019-03-01 |
| publisher | União da Geomorfologia Brasileira |
| record_format | Article |
| series | Revista Brasileira de Geomorfologia |
| spelling | doaj.art-e28f32e4417c4e26978ff382938f6a652024-04-02T01:07:55ZengUnião da Geomorfologia BrasileiraRevista Brasileira de Geomorfologia1519-15402236-56642019-03-0120210.20502/rbg.v20i2.1500522Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetlandHudson de Azevedo Macedo0José Cândido Stevaux1Aguinaldo Silva2Eder Renato Merino3Edward Limin Lo4Mario Luis Assine5Universidade Estadual de Maringá – UEM Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos ContinentaisUniversidade Estadual de Maringá – UEM, Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais; Universidade Federal de Mato Grosso do Sul – UFMS, Campus Três Lagoas – GeografiaUniversidade Federal de Mato Grosso do Sul – UFMS, Campus Pantanal - CPANUniversidade de São Paulo - USP, Instituto de Energia e AmbienteUniversity of Kentucky – UK, Department of Earth and Environmental SciencesUniversidade Estadual Paulista – UNESP, Instituto de Geociências e Ciências Exatas - IGCEThe Pantanal wetland is a complex landscape with distinct hydrogeomorphic compartments, with singular and hydrosedimentary processes. Examining these processes draws great interest in understanding Pantanal dynamics for both the management of the system and the geological record predicted by facies models. Hydrosedimentary data in the Pantanal remain scarce, in spite of government efforts to improve and increase data collection in the Upper Paraguay Basin. This study aims to enhance the understanding of active hydrosedimentary processes in the Pantanal Paraguay trunk-river system in the Corumbá reach. Hydrosedimentary surveys were accomplished in the main channel and tributaries of the Paraguay River. These surveys helped characterize the hydrosedimentary dynamics to consider the active sedimentary processes in this reach. The Paraguay River interacts complexly with its floodplain, which functions as a reservoir retaining flood water and disturbing river discharge. Bathymetric surveying showed that Paraguay River channel has longitudinal compound bar bedforms built by superimposition of ripples. The backwater effect, possibly related with both hydrological regime and geomorphological characteristics of the area, was detected by means of rating-curve analysis of the gauge stations. This effect is hydrologically produced by the out-of-phase flood pulse of the Pantanal and geomorphically driven by the hydraulic bottleneck of the Urucum and Bodoquena massifs. Both factors possibly occur simultaneously. The hydrogeomorphic characteristics (morphology, river competence, and stream power) of the Paraguay River denote that the elaboration of models more appropriate to the Pantanal context is needed.http://www.lsie.unb.br/rbg/index.php/rbg/article/view/1500hydrogeomorphologysediment transportparaguay-corumbá plainupper paraguay basin |
| spellingShingle | Hudson de Azevedo Macedo José Cândido Stevaux Aguinaldo Silva Eder Renato Merino Edward Limin Lo Mario Luis Assine Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland Revista Brasileira de Geomorfologia hydrogeomorphology sediment transport paraguay-corumbá plain upper paraguay basin |
| title | Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland |
| title_full | Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland |
| title_fullStr | Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland |
| title_full_unstemmed | Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland |
| title_short | Hydrosedimentology of the Paraguay River in the Corumbá fluvial reach, Pantanal wetland |
| title_sort | hydrosedimentology of the paraguay river in the corumba fluvial reach pantanal wetland |
| topic | hydrogeomorphology sediment transport paraguay-corumbá plain upper paraguay basin |
| url | http://www.lsie.unb.br/rbg/index.php/rbg/article/view/1500 |
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