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Low-dimensional chaos in magnetospheric activity from AE time seriesThe magnetospheric response to the solar-wind input, as represented by the time-series measurements of the auroral electrojet (AE) index, has been examined using phase-space reconstruction techniques. The system was found to behave as a low-dimensional chaotic system with a fractal dimension of 3.6 and has Kolmogorov entropy less than 0.2/min. These indicate that the dynamics of the system can be adequately described by four independent variables, and that the corresponding intrinsic time scale is of the order of 5 min. The relevance of the results to magnetospheric modeling is discussed.
Document ID
19910026437
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Vassiliadis, D. V.
(Maryland Univ. College Park, MD, United States)
Sharma, A. S.
(Maryland Univ. College Park, MD, United States)
Eastman, T. E.
(Maryland Univ. College Park, MD, United States)
Papadopoulos, K.
(Maryland, University College Park, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1990
Publication Information
Publication: Geophysical Research Letters
Volume: 17
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
91A11060
Funding Number(s)
CONTRACT_GRANT: NAG5-1101
Distribution Limits
Public
Copyright
Other

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