Response of the magnetosphere to perturbation by storms and Alfven wave trains

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We investigate AE time series at one-minute sampling intervals under (a) geomagnetic storm Dst index below -100 nT, (b) weak geomagnetic activity Dst>-20nT, and high-intensity, long-duration continuous auroral activity (HILDCAA). The Takens estimator of correlation dimension and an ensemble of su...

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Autores principales: De La Vega, M., Favetto, A.B.
Formato: JOUR
Materias:
Geomagnetic field
Magnetosphere peturbations
magnetosphere
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00167169_v39_n1_p103_DeLaVega
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00167169_v39_n1_p103_DeLaVega
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spelling todo:paper_00167169_v39_n1_p103_DeLaVega2023-10-03T14:14:38Z Response of the magnetosphere to perturbation by storms and Alfven wave trains De La Vega, M. Favetto, A.B. Geomagnetic field Magnetosphere peturbations magnetosphere We investigate AE time series at one-minute sampling intervals under (a) geomagnetic storm Dst index below -100 nT, (b) weak geomagnetic activity Dst>-20nT, and high-intensity, long-duration continuous auroral activity (HILDCAA). The Takens estimator of correlation dimension and an ensemble of surrogate data sets were calculated for these conditions. No conclusive indication of deterministic behavior was found. The predictability was studied for all series and for surrogated sets. The case corresponding to HILDCAA was the most predictable and the one with the lowest correlation dimension. Thus the magnetosphere during an HILDCAA event may act as a stationary excited system. Fil:De La Vega, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Favetto, A.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00167169_v39_n1_p103_DeLaVega
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Geomagnetic field
Magnetosphere peturbations
magnetosphere
spellingShingle Geomagnetic field
Magnetosphere peturbations
magnetosphere
De La Vega, M.
Favetto, A.B.
Response of the magnetosphere to perturbation by storms and Alfven wave trains
topic_facet Geomagnetic field
Magnetosphere peturbations
magnetosphere
description We investigate AE time series at one-minute sampling intervals under (a) geomagnetic storm Dst index below -100 nT, (b) weak geomagnetic activity Dst>-20nT, and high-intensity, long-duration continuous auroral activity (HILDCAA). The Takens estimator of correlation dimension and an ensemble of surrogate data sets were calculated for these conditions. No conclusive indication of deterministic behavior was found. The predictability was studied for all series and for surrogated sets. The case corresponding to HILDCAA was the most predictable and the one with the lowest correlation dimension. Thus the magnetosphere during an HILDCAA event may act as a stationary excited system.
format JOUR
author De La Vega, M.
Favetto, A.B.
author_facet De La Vega, M.
Favetto, A.B.
author_sort De La Vega, M.
title Response of the magnetosphere to perturbation by storms and Alfven wave trains
title_short Response of the magnetosphere to perturbation by storms and Alfven wave trains
title_full Response of the magnetosphere to perturbation by storms and Alfven wave trains
title_fullStr Response of the magnetosphere to perturbation by storms and Alfven wave trains
title_full_unstemmed Response of the magnetosphere to perturbation by storms and Alfven wave trains
title_sort response of the magnetosphere to perturbation by storms and alfven wave trains
url http://hdl.handle.net/20.500.12110/paper_00167169_v39_n1_p103_DeLaVega
work_keys_str_mv AT delavegam responseofthemagnetospheretoperturbationbystormsandalfvenwavetrains
AT favettoab responseofthemagnetospheretoperturbationbystormsandalfvenwavetrains
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