Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River
Bananal Island is the largest river island in the world, located in the Araguaia River basin in central-western Brazil. Studies on the Araguaia River have shown that changes in the main channel are linked to the increase in sediment input due to agricultural expansion in the Cerrado. However, very...
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| Format: | Article |
| Language: | English |
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União da Geomorfologia Brasileira
2024-01-01
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| Series: | Revista Brasileira de Geomorfologia |
| Subjects: | |
| Online Access: | https://rbgeomorfologia.org.br/rbg/article/view/2427 |
| _version_ | 1827263993594511360 |
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| author | Daniel Araujo Ramos dos Santos Édipo Henrique Cremon Luis Felipe Soares Cherem |
| author_facet | Daniel Araujo Ramos dos Santos Édipo Henrique Cremon Luis Felipe Soares Cherem |
| author_sort | Daniel Araujo Ramos dos Santos |
| collection | DOAJ |
| description |
Bananal Island is the largest river island in the world, located in the Araguaia River basin in central-western Brazil. Studies on the Araguaia River have shown that changes in the main channel are linked to the increase in sediment input due to agricultural expansion in the Cerrado. However, very little is known about the Javaés River, on the opposite margin of Bananal Island. This study analyzed the temporal trends of sand bars and water masses in the Javaés River from 1985 to 2021. Annual mosaics of Landsat images were generated to identify the classes of water masses and sand bars. The Mann Kendall and Sen's Slope tests were used to identify trends and statistical significance of changes over time. The results indicated an increase of 57% (6.5 km²) in the areas of sand bars and a reduction of 39% (15.2 km²) in water bodies. The tests revealed significant trends with an increase in bars and a decrease in water bodies. It was observed that changes in the distribution and rates of regional precipitation, along with the expansion of anthropogenic occupation, are contributing to an increase in sediment input, in a cascade effect, affecting the balance between erosion and deposition in the Javaés River.
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| first_indexed | 2024-03-08T07:14:32Z |
| format | Article |
| id | doaj.art-7c2ea0b1f08e4dc0a605596d39f7f2c4 |
| institution | Directory Open Access Journal |
| issn | 1519-1540 2236-5664 |
| language | English |
| last_indexed | 2025-03-22T03:38:59Z |
| publishDate | 2024-01-01 |
| publisher | União da Geomorfologia Brasileira |
| record_format | Article |
| series | Revista Brasileira de Geomorfologia |
| spelling | doaj.art-7c2ea0b1f08e4dc0a605596d39f7f2c42024-04-28T12:05:10ZengUnião da Geomorfologia BrasileiraRevista Brasileira de Geomorfologia1519-15402236-56642024-01-0125110.20502/rbgeomorfologia.v25i1.24271691Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés RiverDaniel Araujo Ramos dos Santos0Édipo Henrique Cremon1Luis Felipe Soares Cherem2Universidade Federal de Goiás/IESA-LABOGEFInstituto Federal de Goiás (IFG)/Grupo de Estudos em GeomáticaUniversidade Federal de Goiás/IESA-LABOGEF Bananal Island is the largest river island in the world, located in the Araguaia River basin in central-western Brazil. Studies on the Araguaia River have shown that changes in the main channel are linked to the increase in sediment input due to agricultural expansion in the Cerrado. However, very little is known about the Javaés River, on the opposite margin of Bananal Island. This study analyzed the temporal trends of sand bars and water masses in the Javaés River from 1985 to 2021. Annual mosaics of Landsat images were generated to identify the classes of water masses and sand bars. The Mann Kendall and Sen's Slope tests were used to identify trends and statistical significance of changes over time. The results indicated an increase of 57% (6.5 km²) in the areas of sand bars and a reduction of 39% (15.2 km²) in water bodies. The tests revealed significant trends with an increase in bars and a decrease in water bodies. It was observed that changes in the distribution and rates of regional precipitation, along with the expansion of anthropogenic occupation, are contributing to an increase in sediment input, in a cascade effect, affecting the balance between erosion and deposition in the Javaés River. https://rbgeomorfologia.org.br/rbg/article/view/2427Dinâmica fluvialConectividade do sistema fluvialEquilíbrio morfossedimentarAporte sedimentarCerrado |
| spellingShingle | Daniel Araujo Ramos dos Santos Édipo Henrique Cremon Luis Felipe Soares Cherem Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River Revista Brasileira de Geomorfologia Dinâmica fluvial Conectividade do sistema fluvial Equilíbrio morfossedimentar Aporte sedimentar Cerrado |
| title | Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River |
| title_full | Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River |
| title_fullStr | Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River |
| title_full_unstemmed | Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River |
| title_short | Temporal trends in sand bars and water bodies on the right side of the world's largest fluvial island - Javaés River |
| title_sort | temporal trends in sand bars and water bodies on the right side of the world s largest fluvial island javaes river |
| topic | Dinâmica fluvial Conectividade do sistema fluvial Equilíbrio morfossedimentar Aporte sedimentar Cerrado |
| url | https://rbgeomorfologia.org.br/rbg/article/view/2427 |
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