Boynton, R.J, Balikhin, M.A, Billings, S.A et al. (2 more authors) (2011) Using the NARMAX OLS-ERR algorithm to obtain the most influential coupling functions that affect the evolution of the magnetosphere. Journal of Geophysical Research: Space Physics, 116. pp. 1-8. ISSN 0148-0227
Abstract
The NARMAX OLS-ERR algorithm, which is widely used in the study of systems dynamics, is able to determine the causal relationship between the input and output variables for nonlinear systems. This technique has been applied to measurements of the solar wind from ACE at L1 and the Dst index in order to find the best solar wind–magnetosphere coupling function, i.e., which combination of solar wind parameters provides the best predictive capabilities of the Dst index. The data-deduced coupling functions were then compared to those suggested in previous analytical and data-based studies. The most appropriate coupling function was found to be n1/2VαBT sin6(θ/2), where the power of velocity, α, was inconclusive but should be in the range 2–3.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2011 American Geophysical Union. This is an author produced version of a paper subsequently published in Journal of Geophysical Research: Space Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Non-linear systems; Energy-transfer; Identification; dynamics; Models; Field |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Feb 2014 11:30 |
Last Modified: | 15 Sep 2014 02:40 |
Published Version: | http://dx.doi.org/10.1029/2010JA015505 |
Status: | Published |
Publisher: | American Geophysical Union |
Refereed: | Yes |
Identification Number: | 10.1029/2010JA015505 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77105 |