Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/31229 |
Resumo: | Galinhos is one of many spits along the northern coast of Rio Grande do Norte state. Nowadays it has almost 10 km of extension in the E-W direction and medium width of 550 m. Sandy beaches, reefs, estuary, mangroves, lagoon, and dunes are the characteristic geomorphologic features. The modeling of these features is directly correlated with the united performance of waves, coastal current and winds, related with variations of the se level happened in the Quaternary. Aiming to monitoring the evolution of the coastline, it was used aerial photographs from 1954, 1967 and 1988 and satellite images from 1989 and 2000. After georeferred, the images were submitted to several techniques of digital processing, being applied synthesis techniques (dimensionality reduction) and emphasis of the information contained in the same ones, as: RGB colored compositions, index methods (NDWI), analysis for main components (PC’s) and space frequency filtering (directional filters). Each one of the six spectral bands (1-5 and 7) of the Landsat 5-TM and 7-ETM+ were submitted to contrast modifications of the histogram (lineal and no lineal contrast transformations). Among the applied processes, NDWI and the colored composition RGB 432 showed better results to the identification of the interface sea/earth. The application of directional filters allowed to observe submerged features, as sandwaves and photolineaments; the last one also observed in the aerial photographs, with direction NE-SW, which infers the existence of a paleo-channel, cutting the Galinhos spit, suggesting ancient system of island barrier developing for the current spit. The results show a ciclicity of erosional and accretionary processes, as well as the progress of the field of coastal dunes, located in the end East, burying the mangrove vegetation and silting up the tidal channel |
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Lima, Zuleide Maria CarvalhoAlves, Adriano de limaAmaro, Venerando EustáquioVital, Helenice2021-01-07T18:21:28Z2021-01-07T18:21:28Z2001LIMA, Z. M. C. ; ALVES, A. L. ; AMARO, V. E. ; VITAL, Helenice . Evolução da linha de costa do esporão de Galinhos-RN usando fotografias aéreas e imagem Landsat. Pesquisas em Geociências, v. 28, n.2, p. 25-33, 2002. Disponível em: https://seer.ufrgs.br/PesquisasemGeociencias/article/view/20324. Acesso em: 29 dez. 2020. https://doi.org/10.22456/1807-9806.20324https://repositorio.ufrn.br/handle/123456789/3122910.22456/1807-9806.20324Pesquisas em GeociênciasRemote sensingCoastal evolutionSpitEvolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TMinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGalinhos is one of many spits along the northern coast of Rio Grande do Norte state. Nowadays it has almost 10 km of extension in the E-W direction and medium width of 550 m. Sandy beaches, reefs, estuary, mangroves, lagoon, and dunes are the characteristic geomorphologic features. The modeling of these features is directly correlated with the united performance of waves, coastal current and winds, related with variations of the se level happened in the Quaternary. Aiming to monitoring the evolution of the coastline, it was used aerial photographs from 1954, 1967 and 1988 and satellite images from 1989 and 2000. After georeferred, the images were submitted to several techniques of digital processing, being applied synthesis techniques (dimensionality reduction) and emphasis of the information contained in the same ones, as: RGB colored compositions, index methods (NDWI), analysis for main components (PC’s) and space frequency filtering (directional filters). Each one of the six spectral bands (1-5 and 7) of the Landsat 5-TM and 7-ETM+ were submitted to contrast modifications of the histogram (lineal and no lineal contrast transformations). Among the applied processes, NDWI and the colored composition RGB 432 showed better results to the identification of the interface sea/earth. The application of directional filters allowed to observe submerged features, as sandwaves and photolineaments; the last one also observed in the aerial photographs, with direction NE-SW, which infers the existence of a paleo-channel, cutting the Galinhos spit, suggesting ancient system of island barrier developing for the current spit. The results show a ciclicity of erosional and accretionary processes, as well as the progress of the field of coastal dunes, located in the end East, burying the mangrove vegetation and silting up the tidal channelporreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/31229/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52ORIGINALEvoluçãoLinhaCosta_AMARO_2001.pdfEvoluçãoLinhaCosta_AMARO_2001.pdfapplication/pdf3193952https://repositorio.ufrn.br/bitstream/123456789/31229/1/Evolu%c3%a7%c3%a3oLinhaCosta_AMARO_2001.pdf4498c170de9c392c844099e3ca188c35MD51TEXTEvoluçãoLinhaCosta_AMARO_2001.pdf.txtEvoluçãoLinhaCosta_AMARO_2001.pdf.txtExtracted texttext/plain29663https://repositorio.ufrn.br/bitstream/123456789/31229/3/Evolu%c3%a7%c3%a3oLinhaCosta_AMARO_2001.pdf.txt9873d013318206840b15973a191d2863MD53THUMBNAILEvoluçãoLinhaCosta_AMARO_2001.pdf.jpgEvoluçãoLinhaCosta_AMARO_2001.pdf.jpgGenerated Thumbnailimage/jpeg1776https://repositorio.ufrn.br/bitstream/123456789/31229/4/Evolu%c3%a7%c3%a3oLinhaCosta_AMARO_2001.pdf.jpg48c74557c1c111e71e32845d1df1e1efMD54123456789/312292021-01-10 04:54:17.472oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-01-10T07:54:17Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
title |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
spellingShingle |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM Lima, Zuleide Maria Carvalho Remote sensing Coastal evolution Spit |
title_short |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
title_full |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
title_fullStr |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
title_full_unstemmed |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
title_sort |
Evolução da linha de costa do esporão de Galinhos (NE Brasil) utilizando fotografias aéreas e imagens Landsat TM |
author |
Lima, Zuleide Maria Carvalho |
author_facet |
Lima, Zuleide Maria Carvalho Alves, Adriano de lima Amaro, Venerando Eustáquio Vital, Helenice |
author_role |
author |
author2 |
Alves, Adriano de lima Amaro, Venerando Eustáquio Vital, Helenice |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Lima, Zuleide Maria Carvalho Alves, Adriano de lima Amaro, Venerando Eustáquio Vital, Helenice |
dc.subject.por.fl_str_mv |
Remote sensing Coastal evolution Spit |
topic |
Remote sensing Coastal evolution Spit |
description |
Galinhos is one of many spits along the northern coast of Rio Grande do Norte state. Nowadays it has almost 10 km of extension in the E-W direction and medium width of 550 m. Sandy beaches, reefs, estuary, mangroves, lagoon, and dunes are the characteristic geomorphologic features. The modeling of these features is directly correlated with the united performance of waves, coastal current and winds, related with variations of the se level happened in the Quaternary. Aiming to monitoring the evolution of the coastline, it was used aerial photographs from 1954, 1967 and 1988 and satellite images from 1989 and 2000. After georeferred, the images were submitted to several techniques of digital processing, being applied synthesis techniques (dimensionality reduction) and emphasis of the information contained in the same ones, as: RGB colored compositions, index methods (NDWI), analysis for main components (PC’s) and space frequency filtering (directional filters). Each one of the six spectral bands (1-5 and 7) of the Landsat 5-TM and 7-ETM+ were submitted to contrast modifications of the histogram (lineal and no lineal contrast transformations). Among the applied processes, NDWI and the colored composition RGB 432 showed better results to the identification of the interface sea/earth. The application of directional filters allowed to observe submerged features, as sandwaves and photolineaments; the last one also observed in the aerial photographs, with direction NE-SW, which infers the existence of a paleo-channel, cutting the Galinhos spit, suggesting ancient system of island barrier developing for the current spit. The results show a ciclicity of erosional and accretionary processes, as well as the progress of the field of coastal dunes, located in the end East, burying the mangrove vegetation and silting up the tidal channel |
publishDate |
2001 |
dc.date.issued.fl_str_mv |
2001 |
dc.date.accessioned.fl_str_mv |
2021-01-07T18:21:28Z |
dc.date.available.fl_str_mv |
2021-01-07T18:21:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
LIMA, Z. M. C. ; ALVES, A. L. ; AMARO, V. E. ; VITAL, Helenice . Evolução da linha de costa do esporão de Galinhos-RN usando fotografias aéreas e imagem Landsat. Pesquisas em Geociências, v. 28, n.2, p. 25-33, 2002. Disponível em: https://seer.ufrgs.br/PesquisasemGeociencias/article/view/20324. Acesso em: 29 dez. 2020. https://doi.org/10.22456/1807-9806.20324 |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/31229 |
dc.identifier.doi.none.fl_str_mv |
10.22456/1807-9806.20324 |
identifier_str_mv |
LIMA, Z. M. C. ; ALVES, A. L. ; AMARO, V. E. ; VITAL, Helenice . Evolução da linha de costa do esporão de Galinhos-RN usando fotografias aéreas e imagem Landsat. Pesquisas em Geociências, v. 28, n.2, p. 25-33, 2002. Disponível em: https://seer.ufrgs.br/PesquisasemGeociencias/article/view/20324. Acesso em: 29 dez. 2020. https://doi.org/10.22456/1807-9806.20324 10.22456/1807-9806.20324 |
url |
https://repositorio.ufrn.br/handle/123456789/31229 |
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por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Pesquisas em Geociências |
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Pesquisas em Geociências |
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reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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