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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ftuabarcelonapb:oai:ddd.uab.cat:85964 2024-04-21T07:48:20+00:00 Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica Chávez Segura, René Flores Márquez, Elsa Leticia Suriñach Cornet, Emma Galindo ZaldÃvar, Jesús RodrÃguez Fernández, José Maldonado, Andrés Consejo Superior de Investigaciones CientÃficas (Espanya). Instituto Andaluz de Ciencias de la Tierra 2007 application/pdf https://ddd.uab.cat/record/85964 eng eng Geologica acta Vol. 5, Núm. 4 (2007), p. 323-335 https://ddd.uab.cat/record/85964 urn:10.1344/105.000000293 urn:oai:ddd.uab.cat:85964 urn:articleid:16965728v5n4p323 urn:oai:raco.cat:article/82440 urn:oai:revistes.ub.edu:article/1914 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/3.0/ Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics Article 2007 ftuabarcelonapb 2024-03-26T09:32:44Z 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 Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics |
spellingShingle |
Gravity Inverse theory Antarctic Peninsula Powell Basin Marine geophysics Chávez Segura, René Flores Márquez, Elsa Leticia Suriñach Cornet, Emma Galindo ZaldÃvar, Jesús RodrÃguez Fernández, José Maldonado, Andrés Consejo Superior de Investigaciones CientÃficas (Espanya). Instituto Andaluz de Ciencias de la Tierra 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 Segura, René Flores Márquez, Elsa Leticia Suriñach Cornet, Emma Galindo ZaldÃvar, Jesús RodrÃguez Fernández, José Maldonado, Andrés Consejo Superior de Investigaciones CientÃficas (Espanya). Instituto Andaluz de Ciencias de la Tierra |
author_facet |
Chávez Segura, René Flores Márquez, Elsa Leticia Suriñach Cornet, Emma Galindo ZaldÃvar, Jesús RodrÃguez Fernández, José Maldonado, Andrés Consejo Superior de Investigaciones CientÃficas (Espanya). Instituto Andaluz de Ciencias de la Tierra |
author_sort |
Chávez Segura, René |
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 |
publishDate |
2007 |
url |
https://ddd.uab.cat/record/85964 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
Geologica acta Vol. 5, Núm. 4 (2007), p. 323-335 https://ddd.uab.cat/record/85964 urn:10.1344/105.000000293 urn:oai:ddd.uab.cat:85964 urn:articleid:16965728v5n4p323 urn:oai:raco.cat:article/82440 urn:oai:revistes.ub.edu:article/1914 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/3.0/ |
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1796949118080253952 |