Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil

Neste trabalho, investigou-se com detalhe a barreira holocênica do litoral médio do Rio Grande do Sul (RS), entre as localidades do Estreito e de Bacupari. Este trecho do litoral corresponde a mais expressiva projeção costeira de larga-escala da costa do RS. Dados geofísicos (Georadar) e geomorfológ...

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Autores:
Borges de Bitencourt, Volney Junior
Dillenburg, Sergio
Guimarães Barboza, Eduardo
Rosa, Maria Luiza
Manzolli, Rogerio Portantiolo
Tipo de recurso:
Article of journal
Fecha de publicación:
2020
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
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por
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/7132
Acceso en línea:
https://hdl.handle.net/11323/7132
http://dx.doi.org/10.20502/rbg.v21i3.1789
https://repositorio.cuc.edu.co/
Palabra clave:
Georadar (GPR)
Evolução Costeira
Balanço sedimentar
Ground penetrating radar (GPR)
Coastal evolution
Sediment budget
GIS
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openAccess
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CC0 1.0 Universal
id RCUC2_0b3601e3d61838d967872d4ff716d29e
oai_identifier_str oai:repositorio.cuc.edu.co:11323/7132
network_acronym_str RCUC2
network_name_str REDICUC - Repositorio CUC
repository_id_str
dc.title.spa.fl_str_mv Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
dc.title.translated.spa.fl_str_mv Stratigraphic stacking patterns and their reflections on the holocene coastal barrier morphology of the middle Coast of Rio Grande Do Sul, Brazil
title Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
spellingShingle Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
Georadar (GPR)
Evolução Costeira
Balanço sedimentar
Ground penetrating radar (GPR)
Coastal evolution
Sediment budget
GIS
title_short Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
title_full Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
title_fullStr Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
title_full_unstemmed Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
title_sort Padrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, Brasil
dc.creator.fl_str_mv Borges de Bitencourt, Volney Junior
Dillenburg, Sergio
Guimarães Barboza, Eduardo
Rosa, Maria Luiza
Manzolli, Rogerio Portantiolo
dc.contributor.author.spa.fl_str_mv Borges de Bitencourt, Volney Junior
Dillenburg, Sergio
Guimarães Barboza, Eduardo
Rosa, Maria Luiza
Manzolli, Rogerio Portantiolo
dc.subject.spa.fl_str_mv Georadar (GPR)
Evolução Costeira
Balanço sedimentar
Ground penetrating radar (GPR)
Coastal evolution
Sediment budget
GIS
topic Georadar (GPR)
Evolução Costeira
Balanço sedimentar
Ground penetrating radar (GPR)
Coastal evolution
Sediment budget
GIS
description Neste trabalho, investigou-se com detalhe a barreira holocênica do litoral médio do Rio Grande do Sul (RS), entre as localidades do Estreito e de Bacupari. Este trecho do litoral corresponde a mais expressiva projeção costeira de larga-escala da costa do RS. Dados geofísicos (Georadar) e geomorfológicos superficiais permitiram importantes descobertas. Na porção sul da projeção costeira, entre o Estreito e o setor norte da Lagoa do Peixe, a barreira holocênica exibe um comportamento evolutivo dominantemente retrogradacional (provavelmente desde 6 ka até o presente), o qual foi determinado por um longo período de balanço negativo de sedimentos. Já na porção norte da projeção, entre o Balneário Mostardense e Bacupari, a barreira mostra uma inversão de comportamento retrogradacional para progradacional. Tal mudança evolutiva, expressa numa progradação que varia de 230 a 1800 m, é possivelmente oriunda de uma alteração no balanço de sedimentos (balanço negativo para positivo) que pode ter ocorrido somente há alguns séculos, ou mesmo poucos milênios. A mudança para um padrão de empilhamento progradacional mostrou-se crescente em dimensão (extensão do registro progradacional) do meio para o norte da projeção costeira. É possível sugerir que essas tendências evolutivas em escala geológica (10²-10³ anos) vão continuar no decorrer das próximas décadas. Informações acerca do comportamento evolutivo da linha de costa nos últimos séculos e milênios podem servir como subsídios do meio físico na gestão costeira do litoral médio do RS.
publishDate 2020
dc.date.accessioned.none.fl_str_mv 2020-09-29T19:20:00Z
dc.date.available.none.fl_str_mv 2020-09-29T19:20:00Z
dc.date.issued.none.fl_str_mv 2020-05-05
dc.type.spa.fl_str_mv Artículo de revista
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.content.spa.fl_str_mv Text
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/ART
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
format http://purl.org/coar/resource_type/c_6501
status_str acceptedVersion
dc.identifier.issn.spa.fl_str_mv 1519-1540
2236-5664
dc.identifier.uri.spa.fl_str_mv https://hdl.handle.net/11323/7132
dc.identifier.doi.spa.fl_str_mv http://dx.doi.org/10.20502/rbg.v21i3.1789
dc.identifier.instname.spa.fl_str_mv Corporación Universidad de la Costa
dc.identifier.reponame.spa.fl_str_mv REDICUC - Repositorio CUC
dc.identifier.repourl.spa.fl_str_mv https://repositorio.cuc.edu.co/
identifier_str_mv 1519-1540
2236-5664
Corporación Universidad de la Costa
REDICUC - Repositorio CUC
url https://hdl.handle.net/11323/7132
http://dx.doi.org/10.20502/rbg.v21i3.1789
https://repositorio.cuc.edu.co/
dc.language.iso.none.fl_str_mv por
language por
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spelling Borges de Bitencourt, Volney JuniorDillenburg, SergioGuimarães Barboza, EduardoRosa, Maria LuizaManzolli, Rogerio Portantiolo2020-09-29T19:20:00Z2020-09-29T19:20:00Z2020-05-051519-15402236-5664https://hdl.handle.net/11323/7132http://dx.doi.org/10.20502/rbg.v21i3.1789Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/Neste trabalho, investigou-se com detalhe a barreira holocênica do litoral médio do Rio Grande do Sul (RS), entre as localidades do Estreito e de Bacupari. Este trecho do litoral corresponde a mais expressiva projeção costeira de larga-escala da costa do RS. Dados geofísicos (Georadar) e geomorfológicos superficiais permitiram importantes descobertas. Na porção sul da projeção costeira, entre o Estreito e o setor norte da Lagoa do Peixe, a barreira holocênica exibe um comportamento evolutivo dominantemente retrogradacional (provavelmente desde 6 ka até o presente), o qual foi determinado por um longo período de balanço negativo de sedimentos. Já na porção norte da projeção, entre o Balneário Mostardense e Bacupari, a barreira mostra uma inversão de comportamento retrogradacional para progradacional. Tal mudança evolutiva, expressa numa progradação que varia de 230 a 1800 m, é possivelmente oriunda de uma alteração no balanço de sedimentos (balanço negativo para positivo) que pode ter ocorrido somente há alguns séculos, ou mesmo poucos milênios. A mudança para um padrão de empilhamento progradacional mostrou-se crescente em dimensão (extensão do registro progradacional) do meio para o norte da projeção costeira. É possível sugerir que essas tendências evolutivas em escala geológica (10²-10³ anos) vão continuar no decorrer das próximas décadas. Informações acerca do comportamento evolutivo da linha de costa nos últimos séculos e milênios podem servir como subsídios do meio físico na gestão costeira do litoral médio do RS.In this work, the Holocene barrier of the middle coast of Rio Grande do Sul (RS), located between Estreito and Bacupari, was investigated in detail. This stretch of the coast corresponds to the most expressive large-scale coastal projection of the RS coast. Important discoveries were made through subsurface geophysical (GPR) and surfi cial geomorphology data. In the southern portion of the projection, between Estreito and the northern sector of Lagoa do Peixe, the Holocene barrier exhibits a predominantly retrogradational evolutionary behavior (probably from 6 ka and the present), which was determined by a negative sediment budget in the long term. On the other hand, in the northern portion of the projection, between Balneário Mostardense and Bacupari, the barrier shows a reversal from retrogradational to progradational behavior. Such evolutionary change, expressed in a progradation ranging from 230 to 1800 m, is possibly attributed to a change in the sediment budget (negative to positive budget) that may have occurred only a few centuries ago, or even a few millennia. The reversal towards a progradational stacking pattern showed an increase in size (length of the progradational record) from the middle to the north of the coastal projection. It is possible to suggest that these evolutionary trends on a geological scale (10²-10³ years) will continue over the next decades. Information about the coastline evolutionary trends in the last centuries and millennia can be useful as subsidies for the coastal management of the middle coast of RS.Borges de Bitencourt, Volney Junior-will be generated-orcid-0000-0002-1004-5179-600Dillenburg, Sergio-will be generated-orcid-0000-0003-0072-7018-600Guimarães Barboza, EduardoRosa, Maria Luiza-will be generated-orcid-0000-0002-1963-4842-600Manzolli, Rogerio Portantiolo-will be generated-orcid-0000-0002-0223-5634-600porCorporación Universidad de la CostaCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Revista Brasileira de Geomorfologiahttps://www.researchgate.net/publication/342792833_PADROES_DE_EMPILHAMENTO_ESTRATIGRAFICO_E_SEUS_REFLEXOS_NA_MORFOLOGIA_DA_BARREIRA_COSTEIRA_HOLOCENICA_NO_LITORAL_MEDIO_DO_RIO_GRANDE_DO_SUL_BRASILGeoradar (GPR)Evolução CosteiraBalanço sedimentarGround penetrating radar (GPR)Coastal evolutionSediment budgetGISPadrões de empilhamento estratigráfico e seus reflexos na morfologia da barreira costeira holocênica no litoral médio do Rio Grande do Sul, BrasilStratigraphic stacking patterns and their reflections on the holocene coastal barrier morphology of the middle Coast of Rio Grande Do Sul, BrazilArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/acceptedVersionABREU, V.S.; NEAL, J.E. & VAIL, P.R. 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