Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil

Detalhes bibliográficos
Autor(a) principal: Weschenfelder,Jair
Data de Publicação: 2006
Outros Autores: Corrêa,Iran C.S., Aliotta,Salvador, Pereira,Carla M., Vasconcelos,Vinicius E.B. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300017
Resumo: A high resolution seismic survey was conducted in the Patos Lagoon, southern Brazil, aboard of the research vessel LARUS of the Fundação Universidade Federal do Rio Grande (FURG). Around 400 km of 3.5 kHz seismic profiles were collected, which provided acoustic signals of good penetration depth and resolution. Seismic anomalies, including turbidity and pocket gas, revealed that gas-charged sediments are common in several areas of the lagoon. The gas accumulations in the Patos Lagoon are controlled by the spatial distribution of the sedimentary facies. Either in 'curtains' or in 'acoustic turbid zones', the main gas accumulations occur in areas with paleotopographic lows related to fluvial channels and valleys developed in the Rio Grande do Sul coastal plain during regressive/transgressive events of the Quaternary.
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spelling Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazilshallow gas3.5 kHz seismiccoastal plainRio Grande do SulA high resolution seismic survey was conducted in the Patos Lagoon, southern Brazil, aboard of the research vessel LARUS of the Fundação Universidade Federal do Rio Grande (FURG). Around 400 km of 3.5 kHz seismic profiles were collected, which provided acoustic signals of good penetration depth and resolution. Seismic anomalies, including turbidity and pocket gas, revealed that gas-charged sediments are common in several areas of the lagoon. The gas accumulations in the Patos Lagoon are controlled by the spatial distribution of the sedimentary facies. Either in 'curtains' or in 'acoustic turbid zones', the main gas accumulations occur in areas with paleotopographic lows related to fluvial channels and valleys developed in the Rio Grande do Sul coastal plain during regressive/transgressive events of the Quaternary.Academia Brasileira de Ciências2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300017Anais da Academia Brasileira de Ciências v.78 n.3 2006reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652006000300017info:eu-repo/semantics/openAccessWeschenfelder,JairCorrêa,Iran C.S.Aliotta,SalvadorPereira,Carla M.Vasconcelos,Vinicius E.B. deeng2006-08-17T00:00:00Zoai:scielo:S0001-37652006000300017Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2006-08-17T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
title Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
spellingShingle Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
Weschenfelder,Jair
shallow gas
3.5 kHz seismic
coastal plain
Rio Grande do Sul
title_short Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
title_full Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
title_fullStr Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
title_full_unstemmed Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
title_sort Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil
author Weschenfelder,Jair
author_facet Weschenfelder,Jair
Corrêa,Iran C.S.
Aliotta,Salvador
Pereira,Carla M.
Vasconcelos,Vinicius E.B. de
author_role author
author2 Corrêa,Iran C.S.
Aliotta,Salvador
Pereira,Carla M.
Vasconcelos,Vinicius E.B. de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Weschenfelder,Jair
Corrêa,Iran C.S.
Aliotta,Salvador
Pereira,Carla M.
Vasconcelos,Vinicius E.B. de
dc.subject.por.fl_str_mv shallow gas
3.5 kHz seismic
coastal plain
Rio Grande do Sul
topic shallow gas
3.5 kHz seismic
coastal plain
Rio Grande do Sul
description A high resolution seismic survey was conducted in the Patos Lagoon, southern Brazil, aboard of the research vessel LARUS of the Fundação Universidade Federal do Rio Grande (FURG). Around 400 km of 3.5 kHz seismic profiles were collected, which provided acoustic signals of good penetration depth and resolution. Seismic anomalies, including turbidity and pocket gas, revealed that gas-charged sediments are common in several areas of the lagoon. The gas accumulations in the Patos Lagoon are controlled by the spatial distribution of the sedimentary facies. Either in 'curtains' or in 'acoustic turbid zones', the main gas accumulations occur in areas with paleotopographic lows related to fluvial channels and valleys developed in the Rio Grande do Sul coastal plain during regressive/transgressive events of the Quaternary.
publishDate 2006
dc.date.none.fl_str_mv 2006-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0001-37652006000300017
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.78 n.3 2006
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
instacron:ABC
instname_str Academia Brasileira de Ciências (ABC)
instacron_str ABC
institution ABC
reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
repository.mail.fl_str_mv ||aabc@abc.org.br
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