Esquema de tres interfaces con compensación isostática local en el margen continental Argentino

Autores
Pedraza de Marchi, Ana Carolina; Guidella, Marta; Tocho, Claudia
Año de publicación
2016
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present paper, we investigate the Airy type isostatic compensation scheme for three interfaces:water-sediments, sediments-crust and crust-mantle, using forward modelling to calculate the isostaticanomaly with different approximations of Parkers expression in the Argentine continentalmargin. The isostatic anomaly is estimated as the residue between the observed free air anomaly andthe calculated free air anomaly through the sum of the contributions from the tree interfaces.After that, we perform the inversion of the isostatic anomaly in order to find the deflection of theMoho necessary to compensate it (or minimize it) using one term of Parkers expression in the inversion,as an experiment to test the numerical methods. The Moho here considered is obtained fromknowing the depth of the basement and crustal thickness. Another way to estimate the crust-mantleinterface (Moho) is by the inversion with the iterative method of Parker-Oldenburg (Parker, 1973;Oldenburg, 1974), which allows inverting the Bouguer anomaly with more than one term. With theMoho thus obtained, a free-air gravity anomaly can be calculated, which reproduces the observedanomaly quite well. Even considering that the experiment constitutes a schematic model just to testthe numerical methods involved, from the comparison with the only available digitized refractionprofile in the study area, we find that the large wavelength of the inverted Moho is reproduced fairlywell by the modeled Moho for both methods. However, the iterative method yields smoother surfaces,possibly more realistic surfaces given the roughness that the other estimates present.
Fil: Pedraza de Marchi, Ana Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Guidella, Marta. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Tocho, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
ISOSTASIA
ANOMALÍAS DE GRAVEDAD
MARGEN CONTINENTAL ARGENTINO
DESARROLLO DE PARKER
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/112766
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Esquema de tres interfaces con compensación isostática local en el margen continental ArgentinoPedraza de Marchi, Ana CarolinaGuidella, MartaTocho, ClaudiaISOSTASIAANOMALÍAS DE GRAVEDADMARGEN CONTINENTAL ARGENTINODESARROLLO DE PARKERhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In the present paper, we investigate the Airy type isostatic compensation scheme for three interfaces:water-sediments, sediments-crust and crust-mantle, using forward modelling to calculate the isostaticanomaly with different approximations of Parkers expression in the Argentine continentalmargin. The isostatic anomaly is estimated as the residue between the observed free air anomaly andthe calculated free air anomaly through the sum of the contributions from the tree interfaces.After that, we perform the inversion of the isostatic anomaly in order to find the deflection of theMoho necessary to compensate it (or minimize it) using one term of Parkers expression in the inversion,as an experiment to test the numerical methods. The Moho here considered is obtained fromknowing the depth of the basement and crustal thickness. Another way to estimate the crust-mantleinterface (Moho) is by the inversion with the iterative method of Parker-Oldenburg (Parker, 1973;Oldenburg, 1974), which allows inverting the Bouguer anomaly with more than one term. With theMoho thus obtained, a free-air gravity anomaly can be calculated, which reproduces the observedanomaly quite well. Even considering that the experiment constitutes a schematic model just to testthe numerical methods involved, from the comparison with the only available digitized refractionprofile in the study area, we find that the large wavelength of the inverted Moho is reproduced fairlywell by the modeled Moho for both methods. However, the iterative method yields smoother surfaces,possibly more realistic surfaces given the roughness that the other estimates present.Fil: Pedraza de Marchi, Ana Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Guidella, Marta. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Tocho, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaEuropean Association of Geoscientists & Engineers2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112766Pedraza de Marchi, Ana Carolina; Guidella, Marta; Tocho, Claudia; Esquema de tres interfaces con compensación isostática local en el margen continental Argentino; European Association of Geoscientists & Engineers; Geosciencias Aplicadas Latinoamericanas; 3; 1; 3-2016; 1-132352-8281CONICET DigitalCONICETspainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:04:33Zoai:ri.conicet.gov.ar:11336/112766instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:04:33.313CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
title Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
spellingShingle Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
Pedraza de Marchi, Ana Carolina
ISOSTASIA
ANOMALÍAS DE GRAVEDAD
MARGEN CONTINENTAL ARGENTINO
DESARROLLO DE PARKER
title_short Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
title_full Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
title_fullStr Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
title_full_unstemmed Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
title_sort Esquema de tres interfaces con compensación isostática local en el margen continental Argentino
dc.creator.none.fl_str_mv Pedraza de Marchi, Ana Carolina
Guidella, Marta
Tocho, Claudia
author Pedraza de Marchi, Ana Carolina
author_facet Pedraza de Marchi, Ana Carolina
Guidella, Marta
Tocho, Claudia
author_role author
author2 Guidella, Marta
Tocho, Claudia
author2_role author
author
dc.subject.none.fl_str_mv ISOSTASIA
ANOMALÍAS DE GRAVEDAD
MARGEN CONTINENTAL ARGENTINO
DESARROLLO DE PARKER
topic ISOSTASIA
ANOMALÍAS DE GRAVEDAD
MARGEN CONTINENTAL ARGENTINO
DESARROLLO DE PARKER
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In the present paper, we investigate the Airy type isostatic compensation scheme for three interfaces:water-sediments, sediments-crust and crust-mantle, using forward modelling to calculate the isostaticanomaly with different approximations of Parkers expression in the Argentine continentalmargin. The isostatic anomaly is estimated as the residue between the observed free air anomaly andthe calculated free air anomaly through the sum of the contributions from the tree interfaces.After that, we perform the inversion of the isostatic anomaly in order to find the deflection of theMoho necessary to compensate it (or minimize it) using one term of Parkers expression in the inversion,as an experiment to test the numerical methods. The Moho here considered is obtained fromknowing the depth of the basement and crustal thickness. Another way to estimate the crust-mantleinterface (Moho) is by the inversion with the iterative method of Parker-Oldenburg (Parker, 1973;Oldenburg, 1974), which allows inverting the Bouguer anomaly with more than one term. With theMoho thus obtained, a free-air gravity anomaly can be calculated, which reproduces the observedanomaly quite well. Even considering that the experiment constitutes a schematic model just to testthe numerical methods involved, from the comparison with the only available digitized refractionprofile in the study area, we find that the large wavelength of the inverted Moho is reproduced fairlywell by the modeled Moho for both methods. However, the iterative method yields smoother surfaces,possibly more realistic surfaces given the roughness that the other estimates present.
Fil: Pedraza de Marchi, Ana Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Guidella, Marta. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Tocho, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description In the present paper, we investigate the Airy type isostatic compensation scheme for three interfaces:water-sediments, sediments-crust and crust-mantle, using forward modelling to calculate the isostaticanomaly with different approximations of Parkers expression in the Argentine continentalmargin. The isostatic anomaly is estimated as the residue between the observed free air anomaly andthe calculated free air anomaly through the sum of the contributions from the tree interfaces.After that, we perform the inversion of the isostatic anomaly in order to find the deflection of theMoho necessary to compensate it (or minimize it) using one term of Parkers expression in the inversion,as an experiment to test the numerical methods. The Moho here considered is obtained fromknowing the depth of the basement and crustal thickness. Another way to estimate the crust-mantleinterface (Moho) is by the inversion with the iterative method of Parker-Oldenburg (Parker, 1973;Oldenburg, 1974), which allows inverting the Bouguer anomaly with more than one term. With theMoho thus obtained, a free-air gravity anomaly can be calculated, which reproduces the observedanomaly quite well. Even considering that the experiment constitutes a schematic model just to testthe numerical methods involved, from the comparison with the only available digitized refractionprofile in the study area, we find that the large wavelength of the inverted Moho is reproduced fairlywell by the modeled Moho for both methods. However, the iterative method yields smoother surfaces,possibly more realistic surfaces given the roughness that the other estimates present.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/112766
Pedraza de Marchi, Ana Carolina; Guidella, Marta; Tocho, Claudia; Esquema de tres interfaces con compensación isostática local en el margen continental Argentino; European Association of Geoscientists & Engineers; Geosciencias Aplicadas Latinoamericanas; 3; 1; 3-2016; 1-13
2352-8281
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112766
identifier_str_mv Pedraza de Marchi, Ana Carolina; Guidella, Marta; Tocho, Claudia; Esquema de tres interfaces con compensación isostática local en el margen continental Argentino; European Association of Geoscientists & Engineers; Geosciencias Aplicadas Latinoamericanas; 3; 1; 3-2016; 1-13
2352-8281
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv European Association of Geoscientists & Engineers
publisher.none.fl_str_mv European Association of Geoscientists & Engineers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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