Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira
Brazil has a rich density of superficial water bodies in its territory, this is associated with one of the largest potentials for hydroelectric power generation in the world. This potential has gradually been explored with the installation of hydroelectric projects over the years. In 2016, two hydro...
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2020-06-01
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| Online Access: | https://journals.openedition.org/confins/30852 |
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| author | Mariano Vieira dos Santos Miqueias Lima Duarte Tatiana Acácio da Silva Heron Salazar Costa Marcos André Braz Vaz |
| author_facet | Mariano Vieira dos Santos Miqueias Lima Duarte Tatiana Acácio da Silva Heron Salazar Costa Marcos André Braz Vaz |
| author_sort | Mariano Vieira dos Santos |
| collection | DOAJ |
| description | Brazil has a rich density of superficial water bodies in its territory, this is associated with one of the largest potentials for hydroelectric power generation in the world. This potential has gradually been explored with the installation of hydroelectric projects over the years. In 2016, two hydroelectric plants were put into operation in the course of the Madeira River (Jirau and Santo Antônio hydroelectric). This study evaluated the fluvial morphology and the depositional dynamics of sediment downstream of these ventures, using data on the concentration of suspended sediments (CSS), and data from the orbital sensor Landsat 5 and 8 processed using the QGIS software. The results showed that there were physical alterations in the fluvial canal along the evaluated stretch, highlighting the erosion in the margins and the emergence of fluvial sand bank. Although the spatial analysis indicates an increase in river sand banks along the study area, the statistical analysis did not indicate significant differences between the CSS concentrations after the installation of hydroelectric enterprises. |
| format | Article |
| id | doaj-art-8504155d433c410fbf86d1043d884722 |
| institution | Kabale University |
| issn | 1958-9212 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Confins |
| record_format | Article |
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| spelling | doaj-art-8504155d433c410fbf86d1043d8847222025-01-13T15:53:55ZengConfinsConfins1958-92122020-06-014610.4000/confins.30852Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio MadeiraMariano Vieira dos SantosMiqueias Lima DuarteTatiana Acácio da SilvaHeron Salazar CostaMarcos André Braz VazBrazil has a rich density of superficial water bodies in its territory, this is associated with one of the largest potentials for hydroelectric power generation in the world. This potential has gradually been explored with the installation of hydroelectric projects over the years. In 2016, two hydroelectric plants were put into operation in the course of the Madeira River (Jirau and Santo Antônio hydroelectric). This study evaluated the fluvial morphology and the depositional dynamics of sediment downstream of these ventures, using data on the concentration of suspended sediments (CSS), and data from the orbital sensor Landsat 5 and 8 processed using the QGIS software. The results showed that there were physical alterations in the fluvial canal along the evaluated stretch, highlighting the erosion in the margins and the emergence of fluvial sand bank. Although the spatial analysis indicates an increase in river sand banks along the study area, the statistical analysis did not indicate significant differences between the CSS concentrations after the installation of hydroelectric enterprises.https://journals.openedition.org/confins/30852Fluvial geomorphology; River sediments; hydroelectric plants; Porto Velho. |
| spellingShingle | Mariano Vieira dos Santos Miqueias Lima Duarte Tatiana Acácio da Silva Heron Salazar Costa Marcos André Braz Vaz Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira Confins Fluvial geomorphology; River sediments; hydroelectric plants; Porto Velho. |
| title | Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira |
| title_full | Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira |
| title_fullStr | Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira |
| title_full_unstemmed | Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira |
| title_short | Morfologia fluvial e dinâmica de sedimentos: análise dos efeitos a jusante do complexo hidrelétrico do rio Madeira |
| title_sort | morfologia fluvial e dinamica de sedimentos analise dos efeitos a jusante do complexo hidreletrico do rio madeira |
| topic | Fluvial geomorphology; River sediments; hydroelectric plants; Porto Velho. |
| url | https://journals.openedition.org/confins/30852 |
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