High resolution radar mapping of the Cierva Point, Antarctic

Detalhes bibliográficos
Autor(a) principal: Travassos,Jandyr M
Data de Publicação: 2010
Outros Autores: Musa,Jorge E
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=S0102-261X2010000200007
Resumo: The excellent penetration of the electromagnetic field in ice favors the radar and the radio-echo sounding methods for the study of ice masses laying on Earth's surface. In particular the ground penetrating radar has proved to be very effective for surface-based studies of land and sea ice. The most ubiquitous radar signatures are reflections from the internal structure of ice, the so-called stratigraphic layers, or from the bedrock. In this paper we concentrate on some reflection phenomena other than on ice stratigraphy revealed on the ice cover of the Cierva Point, Antarctic Peninsula. We acquired 25 SW-NE and NE-SE profiles in an area of 140 × 175 m² with an acquisition train of 2 Nansen sledges dragged by a ski-doo. Radar sections revealed internal reflection horizons are caused by changes in dielectric properties as well as density fluctuations and preferred crystal orientation fabric.
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spelling High resolution radar mapping of the Cierva Point, AntarcticGPRradar stratigraphylow reflectivity zoneAntarcticThe excellent penetration of the electromagnetic field in ice favors the radar and the radio-echo sounding methods for the study of ice masses laying on Earth's surface. In particular the ground penetrating radar has proved to be very effective for surface-based studies of land and sea ice. The most ubiquitous radar signatures are reflections from the internal structure of ice, the so-called stratigraphic layers, or from the bedrock. In this paper we concentrate on some reflection phenomena other than on ice stratigraphy revealed on the ice cover of the Cierva Point, Antarctic Peninsula. We acquired 25 SW-NE and NE-SE profiles in an area of 140 × 175 m² with an acquisition train of 2 Nansen sledges dragged by a ski-doo. Radar sections revealed internal reflection horizons are caused by changes in dielectric properties as well as density fluctuations and preferred crystal orientation fabric.Sociedade Brasileira de Geofísica2010-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000200007Revista Brasileira de Geofísica v.28 n.2 2010reponame:Revista Brasileira de Geofísica (Online)instname:Sociedade Brasileira de Geofísica (SBG)instacron:SBG10.1590/S0102-261X2010000200007info:eu-repo/semantics/openAccessTravassos,Jandyr MMusa,Jorge Eeng2010-09-03T00:00:00Zoai:scielo:S0102-261X2010000200007Revistahttp://www.scielo.br/rbgONGhttps://old.scielo.br/oai/scielo-oai.php||sbgf@sbgf.org.br1809-45110102-261Xopendoar:2010-09-03T00:00Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)false
dc.title.none.fl_str_mv High resolution radar mapping of the Cierva Point, Antarctic
title High resolution radar mapping of the Cierva Point, Antarctic
spellingShingle High resolution radar mapping of the Cierva Point, Antarctic
Travassos,Jandyr M
GPR
radar stratigraphy
low reflectivity zone
Antarctic
title_short High resolution radar mapping of the Cierva Point, Antarctic
title_full High resolution radar mapping of the Cierva Point, Antarctic
title_fullStr High resolution radar mapping of the Cierva Point, Antarctic
title_full_unstemmed High resolution radar mapping of the Cierva Point, Antarctic
title_sort High resolution radar mapping of the Cierva Point, Antarctic
author Travassos,Jandyr M
author_facet Travassos,Jandyr M
Musa,Jorge E
author_role author
author2 Musa,Jorge E
author2_role author
dc.contributor.author.fl_str_mv Travassos,Jandyr M
Musa,Jorge E
dc.subject.por.fl_str_mv GPR
radar stratigraphy
low reflectivity zone
Antarctic
topic GPR
radar stratigraphy
low reflectivity zone
Antarctic
description The excellent penetration of the electromagnetic field in ice favors the radar and the radio-echo sounding methods for the study of ice masses laying on Earth's surface. In particular the ground penetrating radar has proved to be very effective for surface-based studies of land and sea ice. The most ubiquitous radar signatures are reflections from the internal structure of ice, the so-called stratigraphic layers, or from the bedrock. In this paper we concentrate on some reflection phenomena other than on ice stratigraphy revealed on the ice cover of the Cierva Point, Antarctic Peninsula. We acquired 25 SW-NE and NE-SE profiles in an area of 140 × 175 m² with an acquisition train of 2 Nansen sledges dragged by a ski-doo. Radar sections revealed internal reflection horizons are caused by changes in dielectric properties as well as density fluctuations and preferred crystal orientation fabric.
publishDate 2010
dc.date.none.fl_str_mv 2010-06-01
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=S0102-261X2010000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0102-261X2010000200007
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.28 n.2 2010
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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