Depth of the conductosphere under the Indian shield

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The depth at which the highly conducting layer of the upper mantle, the conductosphere, begins under the Indian shield is estimated. To do this, the geomagnetic daily variations measured north of the magnetic equator are separated into contributions of internal and external origin, and from the latt...

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Autores principales:	Favetto, Alicia Beatriz, Osella, Ana María, Duhau de Romero, Silvia
Publicado:	1992
Materias:	conductosphere depth geomagnetic daily variation magnetic field mantle (upper) tectonic unit Asia, Indian Shield
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v71_n3-4_p180_Favetto http://hdl.handle.net/20.500.12110/paper_00319201_v71_n3-4_p180_Favetto
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00319201_v71_n3-4_p180_Favetto
record_format	dspace
spelling	paper:paper_00319201_v71_n3-4_p180_Favetto2023-06-08T14:58:55Z Depth of the conductosphere under the Indian shield Favetto, Alicia Beatriz Osella, Ana María Duhau de Romero, Silvia conductosphere depth geomagnetic daily variation magnetic field mantle (upper) tectonic unit Asia, Indian Shield The depth at which the highly conducting layer of the upper mantle, the conductosphere, begins under the Indian shield is estimated. To do this, the geomagnetic daily variations measured north of the magnetic equator are separated into contributions of internal and external origin, and from the latter an analytical representation for the ionospheric current system is inferred. The external field produced by this current and the field induced by it in a two-layer conductivity model of the Earth consisting of an insulator overlying a perfect conductor are obtained. The total field thus calculated is compared with the data to obtain the conductosphere depth. The conductosphere below the Indian shield is found to be located at approximately 1000 km, well below the average global value, in agreement with previous findings below the African shield. This result supports the hypothesis that there is a correlation between the deep conducting structure of the Earth and some tectonic features. © 1992. Fil:Favetto, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Osella, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Duhau, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1992 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v71_n3-4_p180_Favetto http://hdl.handle.net/20.500.12110/paper_00319201_v71_n3-4_p180_Favetto
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	conductosphere depth geomagnetic daily variation magnetic field mantle (upper) tectonic unit Asia, Indian Shield
spellingShingle	conductosphere depth geomagnetic daily variation magnetic field mantle (upper) tectonic unit Asia, Indian Shield Favetto, Alicia Beatriz Osella, Ana María Duhau de Romero, Silvia Depth of the conductosphere under the Indian shield
topic_facet	conductosphere depth geomagnetic daily variation magnetic field mantle (upper) tectonic unit Asia, Indian Shield
description	The depth at which the highly conducting layer of the upper mantle, the conductosphere, begins under the Indian shield is estimated. To do this, the geomagnetic daily variations measured north of the magnetic equator are separated into contributions of internal and external origin, and from the latter an analytical representation for the ionospheric current system is inferred. The external field produced by this current and the field induced by it in a two-layer conductivity model of the Earth consisting of an insulator overlying a perfect conductor are obtained. The total field thus calculated is compared with the data to obtain the conductosphere depth. The conductosphere below the Indian shield is found to be located at approximately 1000 km, well below the average global value, in agreement with previous findings below the African shield. This result supports the hypothesis that there is a correlation between the deep conducting structure of the Earth and some tectonic features. © 1992.
author	Favetto, Alicia Beatriz Osella, Ana María Duhau de Romero, Silvia
author_facet	Favetto, Alicia Beatriz Osella, Ana María Duhau de Romero, Silvia
author_sort	Favetto, Alicia Beatriz
title	Depth of the conductosphere under the Indian shield
title_short	Depth of the conductosphere under the Indian shield
title_full	Depth of the conductosphere under the Indian shield
title_fullStr	Depth of the conductosphere under the Indian shield
title_full_unstemmed	Depth of the conductosphere under the Indian shield
title_sort	depth of the conductosphere under the indian shield
publishDate	1992
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v71_n3-4_p180_Favetto http://hdl.handle.net/20.500.12110/paper_00319201_v71_n3-4_p180_Favetto
work_keys_str_mv	AT favettoaliciabeatriz depthoftheconductosphereundertheindianshield AT osellaanamaria depthoftheconductosphereundertheindianshield AT duhauderomerosilvia depthoftheconductosphereundertheindianshield
_version_	1768542025193357312

Depth of the conductosphere under the Indian shield

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