Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica
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| Natura: | Artículo científico |
| Lingua: | en |
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Universitat de Barcelona
2007
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| _version_ | 1876453656098766848 |
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| author | E. Suriñach |
| author_facet | E. Suriñach |
| contents | Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica E. Suriñach J. G. Galindo-Saldívar J. R. Rodríguez-Fernández R. E. Chávez E. L. Flores-Márquez A. Maldonado Ciencias de la Tierra Gravity Powell Basin Inverse theory Marine geophysics Antarctic Peninsula The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during theEarly Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, SouthScotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise obtained with the R/VHespérides and data from the Global Gravity Grid and Sea Floor Topography (GGSFT) database (Sandwell andSmith, 1997) are used to determine the 3D geometry of the crustal-mantle interface (CMI) by numerical inversionmethods. Water layer contribution and sedimentary effects were eliminated from the Free Air anomaly toobtain the total anomaly. Sedimentary effects were obtained from the analysis of existing and new SCAN 97multichannel 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 showsan increase in the thickness of the crust towards the continental margins and a NW-SE oriented axis of symmetrycoinciding with the position of an older oceanic spreading axis. This interface shows a moderate uplifttowards the western part and depicts two main uplifts to the northern and eastern sectors 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550406 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.4 Vol.5 |
| format | Artículo científico |
| id | redalyc_50550406 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universitat de Barcelona |
| spellingShingle | Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica E. Suriñach Ciencias de la Tierra Gravity Powell Basin Inverse theory Marine geophysics Antarctic Peninsula Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica E. Suriñach J. G. Galindo-Saldívar J. R. Rodríguez-Fernández R. E. Chávez E. L. Flores-Márquez A. Maldonado Ciencias de la Tierra Gravity Powell Basin Inverse theory Marine geophysics Antarctic Peninsula The Powell Basin is a small oceanic basin located at the NE end of the Antarctic Peninsula developed during theEarly Miocene and mostly surrounded by the continental crusts of the South Orkney Microcontinent, SouthScotia Ridge and Antarctic Peninsula margins. Gravity data from the SCAN 97 cruise obtained with the R/VHespérides and data from the Global Gravity Grid and Sea Floor Topography (GGSFT) database (Sandwell andSmith, 1997) are used to determine the 3D geometry of the crustal-mantle interface (CMI) by numerical inversionmethods. Water layer contribution and sedimentary effects were eliminated from the Free Air anomaly toobtain the total anomaly. Sedimentary effects were obtained from the analysis of existing and new SCAN 97multichannel 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 showsan increase in the thickness of the crust towards the continental margins and a NW-SE oriented axis of symmetrycoinciding with the position of an older oceanic spreading axis. This interface shows a moderate uplifttowards the western part and depicts two main uplifts to the northern and eastern sectors 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550406 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.4 Vol.5 |
| title | Combined use of the GGSFT data base and on board marine collected data to model the Moho beneath the Powell Basin, Antarctica |
| topic | Ciencias de la Tierra Gravity Powell Basin Inverse theory Marine geophysics Antarctic Peninsula |
| url | https://www.redalyc.org/articulo.oa?id=50550406 |