Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica
The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during the Early Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, South Scotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise o...
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Institut de Ciències de la Terra "Jaume Almera"
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ftdialnet:oai:dialnet.unirioja.es:ART0000182921 2023-05-15T14:04:43+02:00 Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica Chávez, R. E. Suriñach, Emma Maldonado López, Andrés Galindo Zaldívar, Jesús Flores Márquez, E. L. 2007 application/pdf https://dialnet.unirioja.es/servlet/oaiart?codigo=2487031 eng eng Institut de Ciències de la Terra "Jaume Almera" https://dialnet.unirioja.es/servlet/oaiart?codigo=2487031 (Revista) ISSN 1695-6133 LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI Geologica acta: an international earth science journal, ISSN 1695-6133, Vol. 5, Nº. 4, 2007, pags. 323-336 Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics text (article) 2007 ftdialnet 2019-08-29T08:48:09Z The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during the Early Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, South Scotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise obtained with the R/V Hespérides and data from the Global Gravity Grid and Sea Floor Topography (GGSFT) database (Sandwell and Smith, 1997) are used to determine the 3D geometry of the crustal-mantle interface (CMI) by numerical inversion methods. Water layer contribution and sedimentary effects were eliminated from the Free Air anomaly to obtain the total anomaly. Sedimentary effects were obtained from the analysis of existing and new SCAN 97 multichannel seismic profiles (MCS). The regional anomaly was obtained after spectral and filtering processes. The smooth 3D geometry of the crustal mantle interface obtained after inversion of the regional anomaly shows an increase in the thickness of the crust towards the continental margins and a NW-SE oriented axis of symmetry coinciding with the position of an older oceanic spreading axis. This interface shows a moderate uplift towards the western part and depicts two main uplifts to the northern and eastern sectors. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dialnet - Portada de revistas (Universidad de La Rioja) Antarctic The Antarctic Antarctic Peninsula South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) Powell Basin ENVELOPE(-49.500,-49.500,-62.250,-62.250) |
institution |
Open Polar |
collection |
Dialnet - Portada de revistas (Universidad de La Rioja) |
op_collection_id |
ftdialnet |
language |
English |
topic |
Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics |
spellingShingle |
Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics Chávez, R. E. Suriñach, Emma Maldonado López, Andrés Galindo Zaldívar, Jesús Flores Márquez, E. L. Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
topic_facet |
Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics |
description |
The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during the Early Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, South Scotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise obtained with the R/V Hespérides and data from the Global Gravity Grid and Sea Floor Topography (GGSFT) database (Sandwell and Smith, 1997) are used to determine the 3D geometry of the crustal-mantle interface (CMI) by numerical inversion methods. Water layer contribution and sedimentary effects were eliminated from the Free Air anomaly to obtain the total anomaly. Sedimentary effects were obtained from the analysis of existing and new SCAN 97 multichannel seismic profiles (MCS). The regional anomaly was obtained after spectral and filtering processes. The smooth 3D geometry of the crustal mantle interface obtained after inversion of the regional anomaly shows an increase in the thickness of the crust towards the continental margins and a NW-SE oriented axis of symmetry coinciding with the position of an older oceanic spreading axis. This interface shows a moderate uplift towards the western part and depicts two main uplifts to the northern and eastern sectors. |
format |
Article in Journal/Newspaper |
author |
Chávez, R. E. Suriñach, Emma Maldonado López, Andrés Galindo Zaldívar, Jesús Flores Márquez, E. L. |
author_facet |
Chávez, R. E. Suriñach, Emma Maldonado López, Andrés Galindo Zaldívar, Jesús Flores Márquez, E. L. |
author_sort |
Chávez, R. E. |
title |
Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
title_short |
Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
title_full |
Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
title_fullStr |
Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
title_full_unstemmed |
Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
title_sort |
combined use of the ggsft data base and on board marine collected data to model the moho beneath the powell basin, antarctica |
publisher |
Institut de Ciències de la Terra "Jaume Almera" |
publishDate |
2007 |
url |
https://dialnet.unirioja.es/servlet/oaiart?codigo=2487031 |
long_lat |
ENVELOPE(-46.500,-46.500,-60.000,-60.000) ENVELOPE(-49.500,-49.500,-62.250,-62.250) |
geographic |
Antarctic The Antarctic Antarctic Peninsula South Scotia Ridge Powell Basin |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula South Scotia Ridge Powell Basin |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Geologica acta: an international earth science journal, ISSN 1695-6133, Vol. 5, Nº. 4, 2007, pags. 323-336 |
op_relation |
https://dialnet.unirioja.es/servlet/oaiart?codigo=2487031 (Revista) ISSN 1695-6133 |
op_rights |
LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI |
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