Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin

Detalhes bibliográficos
Autor(a) principal: Marinho, Rogério Ribeiro
Data de Publicação: 2020
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista Geotemas
Texto Completo: https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777
Resumo: The Negro River before the confluence with the Amazon River presents a complex fluvial system composed of islands, channels and lakes interconnected to the floodplain, which is known as the Anavilhanas Archipelago. This study analyzed the morphodynamics characteristics of the lakes inside the Anavilhanas Archipelago using images from the Sentinel-1 (SAR sensor) and Landsat-5 (TM sensor) satellites. Bathymetric data, suspended sediment concentration and grain size from the Apacú Lake, the largest lake in Anavilhanas, are also presented. Based on images from the Sentinel1 satellite, a water surface ranging from 390 to 340 km2 was detected in the hydrological year 2017. The Anavilhanas fluvial complex has a surface of 2000 km2, of which 20% of this area is occupied by more than 300 lakes with elongated and narrow morphometry, with size ranging from 0.01 to 59 km2, where 63% are less than 0.53 km2. The annual hydrological dynamics of the Negro River causes low changes in the water surface of the Anavilhanas lake system, with a variation of 15% in the area occupied by the lakes between the period of high water and low water levels. The largest lake in Anavilhanas (Apacú Lake) has an annual average of suspended sediment concentration of 4.15 mg L-1, composed of fine particles (D50 0.02 mm). This paper presents to the scientific community a detailed morphometric survey of the Anavilhanas lakes and the analysis of their local characteristics in relation to the geomorphological style of the lower Negro River.
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spelling Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin Estudio morfodinámico del ambiente lacustre en el Archipiélago de Anavilhanas, Rí­o Negro, Cuenca AmazónicaESTUDO MORFODINÂMICO DO AMBIENTE LACUSTRE NO ARQUIPÉLAGO DE ANAVILHANAS, RIO NEGRO, BACIA AMAZÔNICA Planí­cie de inundaçãoGeomorfologia fluvialSedimento suspensoSensoriamento remotoFloodplainFluvial geomorphologySuspended sedimentRemote sensingLlanura de inundaciónGeomorfologí­a fluvialSedimento en suspensiónTeledetecciónThe Negro River before the confluence with the Amazon River presents a complex fluvial system composed of islands, channels and lakes interconnected to the floodplain, which is known as the Anavilhanas Archipelago. This study analyzed the morphodynamics characteristics of the lakes inside the Anavilhanas Archipelago using images from the Sentinel-1 (SAR sensor) and Landsat-5 (TM sensor) satellites. Bathymetric data, suspended sediment concentration and grain size from the Apacú Lake, the largest lake in Anavilhanas, are also presented. Based on images from the Sentinel1 satellite, a water surface ranging from 390 to 340 km2 was detected in the hydrological year 2017. The Anavilhanas fluvial complex has a surface of 2000 km2, of which 20% of this area is occupied by more than 300 lakes with elongated and narrow morphometry, with size ranging from 0.01 to 59 km2, where 63% are less than 0.53 km2. The annual hydrological dynamics of the Negro River causes low changes in the water surface of the Anavilhanas lake system, with a variation of 15% in the area occupied by the lakes between the period of high water and low water levels. The largest lake in Anavilhanas (Apacú Lake) has an annual average of suspended sediment concentration of 4.15 mg L-1, composed of fine particles (D50 0.02 mm). This paper presents to the scientific community a detailed morphometric survey of the Anavilhanas lakes and the analysis of their local characteristics in relation to the geomorphological style of the lower Negro River.El Rí­o Negro antes de la confluencia con el Rí­o Amazonas presenta un complejo sistema fluvial compuesto por islas, canales y lagos interconectados a la llanura de inundación, que se conoce como el archipiélago de Anavilhanas. Este estudio analizó las caracterí­sticas morfométricas de los lagos en el archipiélago de Anavilhanas utilizando imágenes de los satélites Sentinel-1 (sensor SAR) y Landsat-5 (sensor TM). También se presentan datos batimétricos, concentración y granulometrí­a de sedimentos en suspensión del lago Apacú, el lago más grande de Anavilhanas. Basado en imágenes del satélite Sentinel-1, se detectó una superficie de agua que oscila entre 390 y 340 km2 en el año hidrológico de 2017. El complejo fluvial de Anavilhanas tiene una superficie de 2000 km2, de los cuales el 20% de esta área está ocupada por más de 300 lagos con morfometria alargada y estrecha, con un tamaño que varí­a de 0.01 a 59 km2, donde el 63% tiene menos de 0.53 km2. La dinámica hidrológica anual del Rí­o Negro causa pocos cambios en la superficie del agua del sistema de lagos de Anavilhanas, con una variación del 15% en el área ocupada por los lagos entre el perí­odo de crecida y estiaje. El lago más grande de Anavilhanas (lago Apacú) tiene un promedio anual de concentración de sedimento en suspensión de 4.15 mg L-1, compuesto de partí­culas finas (D50 0.02 mm). Este artí­culo presenta a la comunidad cientí­fica un estudio morfométrico detallado de los lagos Anavilhanas y el examen de sus caracterí­sticas locales en relación con el estilo geomorfológico del bajo Rí­o Negro.O rio Negro antes da confluência com o rio Amazonas apresenta um complexo sistema de ilhas, canais e lagos interconectados à planí­cie de inundação, conhecido como Arquipélago de Anavilhanas. Este estudo teve como objetivo analisar a morfodinâmica dos lagos situados no interior das ilhas de Anavilhanas. Imagens dos satélites Sentinel-1 e Landsat-5 foram utilizadas para mapear as unidades fluviais de Anavilhanas e estimar o comprimento, área, perí­metro, largura e forma dos lagos. Dados de batimetria, de granulometria e concentração de sedimentos suspensos coletados no maior lago de Anavilhanas são apresentados. Através da classificação de imagens do Sentinel-1 foi detectada uma superfí­cie de água que variou de 340 a 390 km2 no ano hidrológico de 2017. O Complexo fluvial de Anavilhanas possui uma superfí­cie de 2000 km2 dos quais 20% desta área é ocupada por mais de 300 lagos de forma alongada e estreita, com tamanho variando de 0,01 a 59 km2, onde 63% são menores que 0,53 km2. A dinâmica hidrológica anual do rio Negro ocasiona pouca mudança na superfí­cie de água no ambiente lacustre de Anavilhanas, com variação de 15% na área ocupada pelos lagos entre o perí­odo de cheia e de seca. O maior lago de Anavilhanas (lago Apacú) apresenta média anual da concentração de sedimentos suspensos de 4,15 mg L-1, composto de partí­culas finas (D50 0,02 mm). Este trabalho apresenta para a comunidade cientí­fica um detalhado levantamento morfométrico dos lagos de Anavilhanas e uma análise de suas caracterí­sticas locais com relação ao estilo geomorfológico do baixo rio Negro.Universidade do Estado do Rio Grande do Norte (UERN)2020-12-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion Peer reviewed Revisado por paresAvaliado pelos paresapplication/pdfhttps://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777Journal Geotemas; Vol. 10 No. 3 (2020): Revista Geotemas; 81-105Revista Geotemas; Vol. 10 Núm. 3 (2020): Revista Geotemas; 81-105Revista Geotemas; v. 10 n. 3 (2020): Revista Geotemas; 81-1052236-255Xreponame:Revista Geotemasinstname:Universidade do Estado do Rio Grande do Norte (UERN)instacron:UERNporhttps://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777/2511Copyright (c) 2020 Revista Geotemasinfo:eu-repo/semantics/openAccessMarinho, Rogério Ribeiro 2020-12-29T15:34:09Zoai:ojs2.periodicos.apps.uern.br:article/2777Revistahttp://periodicos.apps.uern.br/index.php/GEOTemas/indexPUBhttp://periodicos.apps.uern.br/index.php/GEOTemas/oaigeotemas@uern.br||josielguedes@yahoo.com.br2236-255X2236-255Xopendoar:2020-12-29T15:34:09Revista Geotemas - Universidade do Estado do Rio Grande do Norte (UERN)false
dc.title.none.fl_str_mv Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
Estudio morfodinámico del ambiente lacustre en el Archipiélago de Anavilhanas, Rí­o Negro, Cuenca Amazónica
ESTUDO MORFODINÂMICO DO AMBIENTE LACUSTRE NO ARQUIPÉLAGO DE ANAVILHANAS, RIO NEGRO, BACIA AMAZÔNICA
title Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
spellingShingle Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
Marinho, Rogério Ribeiro
Planí­cie de inundação
Geomorfologia fluvial
Sedimento suspenso
Sensoriamento remoto
Floodplain
Fluvial geomorphology
Suspended sediment
Remote sensing
Llanura de inundación
Geomorfologí­a fluvial
Sedimento en suspensión
Teledetección
title_short Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
title_full Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
title_fullStr Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
title_full_unstemmed Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
title_sort Morphodynamic study of the lacustrine environment in Anavilhanas archipelago, Negro River, Amazon basin
author Marinho, Rogério Ribeiro
author_facet Marinho, Rogério Ribeiro
author_role author
dc.contributor.author.fl_str_mv Marinho, Rogério Ribeiro
dc.subject.por.fl_str_mv Planí­cie de inundação
Geomorfologia fluvial
Sedimento suspenso
Sensoriamento remoto
Floodplain
Fluvial geomorphology
Suspended sediment
Remote sensing
Llanura de inundación
Geomorfologí­a fluvial
Sedimento en suspensión
Teledetección
topic Planí­cie de inundação
Geomorfologia fluvial
Sedimento suspenso
Sensoriamento remoto
Floodplain
Fluvial geomorphology
Suspended sediment
Remote sensing
Llanura de inundación
Geomorfologí­a fluvial
Sedimento en suspensión
Teledetección
description The Negro River before the confluence with the Amazon River presents a complex fluvial system composed of islands, channels and lakes interconnected to the floodplain, which is known as the Anavilhanas Archipelago. This study analyzed the morphodynamics characteristics of the lakes inside the Anavilhanas Archipelago using images from the Sentinel-1 (SAR sensor) and Landsat-5 (TM sensor) satellites. Bathymetric data, suspended sediment concentration and grain size from the Apacú Lake, the largest lake in Anavilhanas, are also presented. Based on images from the Sentinel1 satellite, a water surface ranging from 390 to 340 km2 was detected in the hydrological year 2017. The Anavilhanas fluvial complex has a surface of 2000 km2, of which 20% of this area is occupied by more than 300 lakes with elongated and narrow morphometry, with size ranging from 0.01 to 59 km2, where 63% are less than 0.53 km2. The annual hydrological dynamics of the Negro River causes low changes in the water surface of the Anavilhanas lake system, with a variation of 15% in the area occupied by the lakes between the period of high water and low water levels. The largest lake in Anavilhanas (Apacú Lake) has an annual average of suspended sediment concentration of 4.15 mg L-1, composed of fine particles (D50 0.02 mm). This paper presents to the scientific community a detailed morphometric survey of the Anavilhanas lakes and the analysis of their local characteristics in relation to the geomorphological style of the lower Negro River.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-29
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer reviewed
Revisado por pares
Avaliado pelos pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777
url https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.apps.uern.br/index.php/GEOTemas/article/view/2777/2511
dc.rights.driver.fl_str_mv Copyright (c) 2020 Revista Geotemas
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Revista Geotemas
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade do Estado do Rio Grande do Norte (UERN)
publisher.none.fl_str_mv Universidade do Estado do Rio Grande do Norte (UERN)
dc.source.none.fl_str_mv Journal Geotemas; Vol. 10 No. 3 (2020): Revista Geotemas; 81-105
Revista Geotemas; Vol. 10 Núm. 3 (2020): Revista Geotemas; 81-105
Revista Geotemas; v. 10 n. 3 (2020): Revista Geotemas; 81-105
2236-255X
reponame:Revista Geotemas
instname:Universidade do Estado do Rio Grande do Norte (UERN)
instacron:UERN
instname_str Universidade do Estado do Rio Grande do Norte (UERN)
instacron_str UERN
institution UERN
reponame_str Revista Geotemas
collection Revista Geotemas
repository.name.fl_str_mv Revista Geotemas - Universidade do Estado do Rio Grande do Norte (UERN)
repository.mail.fl_str_mv geotemas@uern.br||josielguedes@yahoo.com.br
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