Recent geomorphological evolution of channel bar in Magdalena River (Colombia) due to natural and anthropogenic interferences

dc.creatorManzolli, Rogerio Portantiolo
dc.creatorPortz, Luana
dc.creatorVillate-Daza, Diego
dc.creatorPulido Nossa, Diego Armando
dc.creatorGarcía-Becerra, David
dc.creatorAlcántara-Carrió, Javier
dc.date2023-04-11T15:52:21Z
dc.date2024-09-30
dc.date2023-04-11T15:52:21Z
dc.date2022-09-30
dc.date.accessioned2023-10-03T20:01:19Z
dc.date.available2023-10-03T20:01:19Z
dc.identifierRogério Portantiolo Manzolli, Luana Portz, Diego Villate-Daza, Diego Pulido-Nossa, David García-Becerra, Javier Alcántara-Carrió, Recent geomorphological evolution of channel bar in Magdalena River (Colombia) due to natural and anthropogenic interferences, Estuarine, Coastal and Shelf Science, Volume 275, 2022, 107959, ISSN 0272-7714, https://doi.org/10.1016/j.ecss.2022.107959.
dc.identifier0272-7714
dc.identifier1096-0015
dc.identifierhttps://hdl.handle.net/11323/9976
dc.identifier10.1016/j.ecss.2022.107959
dc.identifierCorporación Universidad de la Costa
dc.identifierREDICUC - Repositorio CUC
dc.identifierhttps://repositorio.cuc.edu.co/
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9173915
dc.descriptionThe growing establishment of port structures in estuarine regions has resulted in alternated sedimentation patterns and new geoforms. The primary purpose of this study is to understand the recent formation and geomorphological evolution of the fluvial bar in the final portion of the Magdalena River. The geomorphological evolution analysis was made possible using Geographic Information Systems tools, satellite images, and bathymetric data. The studied bar formed and stabilized through anthropic and natural factors such as port structures (obstacles to sediment transport), channel morphology, and natural- and anthropic-caused variation to the sediment supply. The lateral bar formation, adjacent to port structures, began in 2017 with surface runoff accumulating and anchored on the riverbank since 2018. At present, the bar covers 45% of the original river width, and an approximate sediment volume worth 4,000,000 m3 has accumulated. Changes in the navigable channel result in slope modification from 2.02° to 5.36°. The construction of port structures, i.e. new pile bridges, changes the natural sediment flow, because they are obstacles, trapping sediments downstream. This period coincides with the end of a weak El Niño cycle, subsequent to a La Nina period also of low intensity, with reduced precipitation rates resulting in a decrease in flow, and therefore contributing to an increase in sedimentation. The observations suggest that it is crucial to understand the channel bars' morphology and origin to avoid possible economic and social impacts due to the disruptions in navigation.
dc.format1 página
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAcademic Press Inc.
dc.publisherUnited States
dc.relation275
dc.rights© 2022 Elsevier Ltd. All rights reserved.
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.rightshttp://purl.org/coar/access_right/c_f1cf
dc.sourcehttps://www.sciencedirect.com/science/article/abs/pii/S0272771422002177?via%3Dihub
dc.subjectFluvial
dc.subjectBathymetry
dc.subjectSatellite images
dc.subjectNavigation
dc.subjectSedimentation
dc.titleRecent geomorphological evolution of channel bar in Magdalena River (Colombia) due to natural and anthropogenic interferences
dc.typeArtículo de revista
dc.typehttp://purl.org/coar/resource_type/c_2df8fbb1
dc.typeText
dc.typeinfo:eu-repo/semantics/article
dc.typehttp://purl.org/redcol/resource_type/ART
dc.typeinfo:eu-repo/semantics/draft
dc.typehttp://purl.org/coar/version/c_b1a7d7d4d402bcce
dc.coverageMagdalena River
dc.coverageColombia


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