Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas

Detalhes bibliográficos
Autor(a) principal: Bhokonok,Oleg
Data de Publicação: 2006
Outros Autores: Prado,Renato Luiz, Diogo,Liliana Alcazar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Geofísica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000100006
Resumo: Pseudo walkaway noise tests were accomplished in study area in São Paulo city, Brazil, in order to evaluate the potentiality of seismic reflection technique in shallow geological/geotechnical investigation in urban environment, where there is usually the presence of different types as well as intensities of noises and the paved surface. Data acquisition was conducted with a 24 channel seismograph with 24 bit A/D converter, 28 Hz and 100 Hz geophones, as well as sledge hammer and seismic rifle as sources. The best results were obtained with: (i) 100 Hz geophones with 0.18 m spike and hammer source with steel plate; (ii) 100 Hz geophones coupled through clay on asphaltic coverage with hammer source applied on asphalt. Laboratory tests were also accomplished in shake table in order to evaluate geophone responses when they were coupled with different types of clay. Tests indicated clay employment is a good alternative to couple geophones, notwithstanding kaolinitic clays are less indicated.
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spelling Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areasseismic reflectionseismic sourcesshallow geophysicsgeophonesseismic in São Paulo cityPseudo walkaway noise tests were accomplished in study area in São Paulo city, Brazil, in order to evaluate the potentiality of seismic reflection technique in shallow geological/geotechnical investigation in urban environment, where there is usually the presence of different types as well as intensities of noises and the paved surface. Data acquisition was conducted with a 24 channel seismograph with 24 bit A/D converter, 28 Hz and 100 Hz geophones, as well as sledge hammer and seismic rifle as sources. The best results were obtained with: (i) 100 Hz geophones with 0.18 m spike and hammer source with steel plate; (ii) 100 Hz geophones coupled through clay on asphaltic coverage with hammer source applied on asphalt. Laboratory tests were also accomplished in shake table in order to evaluate geophone responses when they were coupled with different types of clay. Tests indicated clay employment is a good alternative to couple geophones, notwithstanding kaolinitic clays are less indicated.Sociedade Brasileira de Geofísica2006-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000100006Revista Brasileira de Geofísica v.24 n.1 2006reponame:Revista Brasileira de Geofísica (Online)instname:Sociedade Brasileira de Geofísica (SBG)instacron:SBG10.1590/S0102-261X2006000100006info:eu-repo/semantics/openAccessBhokonok,OlegPrado,Renato LuizDiogo,Liliana Alcazareng2007-05-15T00:00:00Zoai:scielo:S0102-261X2006000100006Revistahttp://www.scielo.br/rbgONGhttps://old.scielo.br/oai/scielo-oai.php||sbgf@sbgf.org.br1809-45110102-261Xopendoar:2007-05-15T00:00Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)false
dc.title.none.fl_str_mv Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
title Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
spellingShingle Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
Bhokonok,Oleg
seismic reflection
seismic sources
shallow geophysics
geophones
seismic in São Paulo city
title_short Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
title_full Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
title_fullStr Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
title_full_unstemmed Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
title_sort Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas
author Bhokonok,Oleg
author_facet Bhokonok,Oleg
Prado,Renato Luiz
Diogo,Liliana Alcazar
author_role author
author2 Prado,Renato Luiz
Diogo,Liliana Alcazar
author2_role author
author
dc.contributor.author.fl_str_mv Bhokonok,Oleg
Prado,Renato Luiz
Diogo,Liliana Alcazar
dc.subject.por.fl_str_mv seismic reflection
seismic sources
shallow geophysics
geophones
seismic in São Paulo city
topic seismic reflection
seismic sources
shallow geophysics
geophones
seismic in São Paulo city
description Pseudo walkaway noise tests were accomplished in study area in São Paulo city, Brazil, in order to evaluate the potentiality of seismic reflection technique in shallow geological/geotechnical investigation in urban environment, where there is usually the presence of different types as well as intensities of noises and the paved surface. Data acquisition was conducted with a 24 channel seismograph with 24 bit A/D converter, 28 Hz and 100 Hz geophones, as well as sledge hammer and seismic rifle as sources. The best results were obtained with: (i) 100 Hz geophones with 0.18 m spike and hammer source with steel plate; (ii) 100 Hz geophones coupled through clay on asphaltic coverage with hammer source applied on asphalt. Laboratory tests were also accomplished in shake table in order to evaluate geophone responses when they were coupled with different types of clay. Tests indicated clay employment is a good alternative to couple geophones, notwithstanding kaolinitic clays are less indicated.
publishDate 2006
dc.date.none.fl_str_mv 2006-03-01
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=S0102-261X2006000100006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000100006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0102-261X2006000100006
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 Sociedade Brasileira de Geofísica
publisher.none.fl_str_mv Sociedade Brasileira de Geofísica
dc.source.none.fl_str_mv Revista Brasileira de Geofísica v.24 n.1 2006
reponame:Revista Brasileira de Geofísica (Online)
instname:Sociedade Brasileira de Geofísica (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Geofísica (SBG)
instacron_str SBG
institution SBG
reponame_str Revista Brasileira de Geofísica (Online)
collection Revista Brasileira de Geofísica (Online)
repository.name.fl_str_mv Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)
repository.mail.fl_str_mv ||sbgf@sbgf.org.br
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