Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil)
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Data de Publicação: | 2022 |
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Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Sociedade & natureza (Online) |
Texto Completo: | https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381 |
Resumo: | Extreme mud and debris flows can bury alluvial plains. In current literature, there exists a significant knowledge gap regarding this process, since information about the sedimentological characteristics and estimates of the volumes of these deposits, are still scarce. Such knowledge is important for understanding the role of these events in the morphogenesis of the alluvial plains of the highland mountain margins. The study area located in the Jacareí River basin (coast of the State of Paraná, Brazil) was recently buried by mud slides in March 2011, therefore, our objective is to analyze the sedimentology and estimate the volume of instantaneous deposits formed by the aforementioned gravitational processes. The deposits were mapped based on a geospatial database. Afterwards, samples were collected for laboratory analysis. To estimate the volume, field samples were collected, measuring the thickness of the deposits, which were then interpolated in a GIS environment. Pelitic (9%), psephytic (4%) and psammitic (87%) deposits were identified. The psammitic deposits showed two distinct behaviors as a function of the flow and burial dynamics of the alluvial plain. The total volume of the deposit was estimated at 1,7 million tons of sediment. The results demonstrate the magnitude of the 2011 event, since in a period of less than 24 hours the Jacareí river basin moved more than 8.5 times the annual production of sediments from the hydrographic units that drain into the Estuarine Complex of Paranaguá. |
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Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil)Sedimentologia e reconstituição volumétrica de depósitos de corridas de lama em planície aluvial: estudo na bacia do rio Jacareí, ParanáGeomorfologia fluvialSedimentosTransformação de paisagemRiver geomorphologySedimentsLandscape transformationExtreme mud and debris flows can bury alluvial plains. In current literature, there exists a significant knowledge gap regarding this process, since information about the sedimentological characteristics and estimates of the volumes of these deposits, are still scarce. Such knowledge is important for understanding the role of these events in the morphogenesis of the alluvial plains of the highland mountain margins. The study area located in the Jacareí River basin (coast of the State of Paraná, Brazil) was recently buried by mud slides in March 2011, therefore, our objective is to analyze the sedimentology and estimate the volume of instantaneous deposits formed by the aforementioned gravitational processes. The deposits were mapped based on a geospatial database. Afterwards, samples were collected for laboratory analysis. To estimate the volume, field samples were collected, measuring the thickness of the deposits, which were then interpolated in a GIS environment. Pelitic (9%), psephytic (4%) and psammitic (87%) deposits were identified. The psammitic deposits showed two distinct behaviors as a function of the flow and burial dynamics of the alluvial plain. The total volume of the deposit was estimated at 1,7 million tons of sediment. The results demonstrate the magnitude of the 2011 event, since in a period of less than 24 hours the Jacareí river basin moved more than 8.5 times the annual production of sediments from the hydrographic units that drain into the Estuarine Complex of Paranaguá.Corridas de lama e de detritos extremas podem soterrar planícies aluviais. O relato deste processo, bem como o conhecimento sobre as características sedimentológicas e estimativas de volumes destes depósitos, ainda são escassos na literatura. Tais conhecimentos são importantes para a compreensão do papel destes eventos na morfogênese das planícies aluviais de margem serrana. Tendo a planície aluvial do rio Jacareí (litoral do Paraná) como recorte de estudo, área soterrada recentemente por corridas de lama em março de 2011, objetiva-se analisar a sedimentologia e estimar o volume dos depósitos instantâneos formados pelos processos gravitacionais supracitado. Os depósitos foram mapeados a partir de uma base de dados geoespaciais. Após, foram realizadas coletas de amostras para análises laboratoriais. Para estimar o volume, foram coletados em campo pontos amostrais com medidas da espessura dos depósitos, encaminhados para interpolação em ambiente SIG. Foram identificados depósitos pelíticos (9%), psefíticos (4%) e psamíticos (87%). Os depósitos psamíticos apresentaram dois comportamentos distintos em função da dinâmica de escoamento e soterramento da planície. O volume total do depósito foi estimado em 1.7 milhão de toneladas de sedimentos. Os resultados demostram a elevada magnitude do evento de 2011, visto que em um período inferior a 24 horas a bacia do rio Jacareí movimentou mais de 8,5 vezes a produção anual de sedimentos das unidades hidrográficas que drenam para o Complexo Estuarino de Paranaguá.Universidade Federal de Uberlândia2022-06-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.ufu.br/index.php/sociedadenatureza/article/view/6438110.14393/SN-v34-2022-64381Sociedade & Natureza; Vol. 34 No. 1 (2022): Sociedade & Natureza; v. 34 n. 1 (2022): 1982-45130103-1570reponame:Sociedade & natureza (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUporenghttps://seer.ufu.br/index.php/sociedadenatureza/article/view/64381/34024https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381/34025Copyright (c) 2021 Otacílio Lopes de Souza Paz, Eduardo Vedor Paulahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessPaz, Otacílio Lopes de SouzaPaula, Eduardo Vedor2023-04-06T20:32:29Zoai:ojs.www.seer.ufu.br:article/64381Revistahttp://www.sociedadenatureza.ig.ufu.br/PUBhttps://seer.ufu.br/index.php/sociedadenatureza/oai||sociedade.natureza.ufu@gmail.com|| lucianamelo@ufu.br1982-45130103-1570opendoar:2023-04-06T20:32:29Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) Sedimentologia e reconstituição volumétrica de depósitos de corridas de lama em planície aluvial: estudo na bacia do rio Jacareí, Paraná |
title |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
spellingShingle |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) Paz, Otacílio Lopes de Souza Geomorfologia fluvial Sedimentos Transformação de paisagem River geomorphology Sediments Landscape transformation |
title_short |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
title_full |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
title_fullStr |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
title_full_unstemmed |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
title_sort |
Sedimentology and volumetric reconstitution of recent mud and debris flows deposits in alluvial plain: a study in the Jacareí river basin (southern coast of Brazil) |
author |
Paz, Otacílio Lopes de Souza |
author_facet |
Paz, Otacílio Lopes de Souza Paula, Eduardo Vedor |
author_role |
author |
author2 |
Paula, Eduardo Vedor |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Paz, Otacílio Lopes de Souza Paula, Eduardo Vedor |
dc.subject.por.fl_str_mv |
Geomorfologia fluvial Sedimentos Transformação de paisagem River geomorphology Sediments Landscape transformation |
topic |
Geomorfologia fluvial Sedimentos Transformação de paisagem River geomorphology Sediments Landscape transformation |
description |
Extreme mud and debris flows can bury alluvial plains. In current literature, there exists a significant knowledge gap regarding this process, since information about the sedimentological characteristics and estimates of the volumes of these deposits, are still scarce. Such knowledge is important for understanding the role of these events in the morphogenesis of the alluvial plains of the highland mountain margins. The study area located in the Jacareí River basin (coast of the State of Paraná, Brazil) was recently buried by mud slides in March 2011, therefore, our objective is to analyze the sedimentology and estimate the volume of instantaneous deposits formed by the aforementioned gravitational processes. The deposits were mapped based on a geospatial database. Afterwards, samples were collected for laboratory analysis. To estimate the volume, field samples were collected, measuring the thickness of the deposits, which were then interpolated in a GIS environment. Pelitic (9%), psephytic (4%) and psammitic (87%) deposits were identified. The psammitic deposits showed two distinct behaviors as a function of the flow and burial dynamics of the alluvial plain. The total volume of the deposit was estimated at 1,7 million tons of sediment. The results demonstrate the magnitude of the 2011 event, since in a period of less than 24 hours the Jacareí river basin moved more than 8.5 times the annual production of sediments from the hydrographic units that drain into the Estuarine Complex of Paranaguá. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381 10.14393/SN-v34-2022-64381 |
url |
https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381 |
identifier_str_mv |
10.14393/SN-v34-2022-64381 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381/34024 https://seer.ufu.br/index.php/sociedadenatureza/article/view/64381/34025 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Otacílio Lopes de Souza Paz, Eduardo Vedor Paula https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Otacílio Lopes de Souza Paz, Eduardo Vedor Paula https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.source.none.fl_str_mv |
Sociedade & Natureza; Vol. 34 No. 1 (2022): Sociedade & Natureza; v. 34 n. 1 (2022): 1982-4513 0103-1570 reponame:Sociedade & natureza (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Sociedade & natureza (Online) |
collection |
Sociedade & natureza (Online) |
repository.name.fl_str_mv |
Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
||sociedade.natureza.ufu@gmail.com|| lucianamelo@ufu.br |
_version_ |
1799943982939111424 |