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The Coupling Between the Solar Wind and Proton Fluxes at Geo : Volume 31, Issue 10 (02/10/2013)

By Boynton, R. J.

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Book Id: WPLBN0004002252
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: The Coupling Between the Solar Wind and Proton Fluxes at Geo : Volume 31, Issue 10 (02/10/2013)  
Author: Boynton, R. J.
Volume: Vol. 31, Issue 10
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Moiseenko, I., Amariutei, O. A., Billings, S. A., & Boynton, R. J. (2013). The Coupling Between the Solar Wind and Proton Fluxes at Geo : Volume 31, Issue 10 (02/10/2013). Retrieved from http://members.worldlibrary.net/


Description
Description: ACSE, University of Sheffield, Sheffield, UK. The relationship between the solar wind and the proton flux at geosynchronous Earth orbit (GEO) is investigated using the error reduction ratio (ERR) analysis. The ERR analysis is able to search for the most appropriate inputs that control the evolution of the system. This approach is a black box method and is able to derive a mathematical model of a system from input-output data. This method is used to analyse eight energy ranges of the proton flux at GEO from 80 keV to 14.5 MeV. The inputs to the algorithm were solar wind velocity, density and pressure; the Dst index; the solar energetic proton (SEP) flux; and a function of the interplanetary magnetic field (IMF) tangential magnitude and clock angle. The results show that for lowest five energy channels (80 to 800 keV) the GEO proton fluxes are controlled by the solar wind velocity with a lag of two to three days. However, above 350 keV, the SEP fluxes, accounts for a significant portion of the GEO proton flux variance. For the highest three energy channels (0.74 to 14.5 MeV), the SEPs account for the majority of the ERR. The results also show an anisotropy of protons with gyrocenters inside GEO and outside GEO, where the protons inside GEO are controlled partly by the Dst index and also an IMF-clock angle function.

Summary
The coupling between the solar wind and proton fluxes at GEO

Excerpt
Balikhin, M. A., Boaghe, O. M., Billings, S. A., and Alleyne, H. S. C. K.: Terrestrial magnetosphere as a nonlinear resonator, Geophys. Res. Lett., 28, 1123–1126, 2001.; Balikhin, M. A., Boynton, R. J., Billings, S. A., Gedalin, M., Ganushkina, N., Coca, D., and Wei, H.: Data based quest for solar wind-magnetosphere coupling function, Geophys. Res. Lett., 37, L24107, doi:10.1029/2010GL045733, 2010.; Billings, S. A. and Voon, W. S. F.: Correlation based model validity tests for non-linear models, Int. Control J., 44, 235–244, 1986.; Balikhin, M. A., Gedalin, M., Reeves, G. D., Boynton, R. J., and Billings, S. A.: Time scaling of the electron flux increase at geo: The local energy diffusion model vs observations, J. Geophys. Res., 117, A10208, doi:10.1029/2012JA018114, 2012.; Billings, S. A., Chen, S., and Korenberg, M. J.: Identification of mimo non-linear systems using a forward-regression orthogonal estimator, Int. J. Control, 49, 2157–2189, 1989.; Blake, J. B., Martina, E. F., and Paulikas, G. A.: On the access of solar protons to the synchronous altitude region, J. Geophys. Res., 79, 1345–1348, doi:10.1029/JA079i010p01345, 1974.; Blake, J. B., Kolasinski, W. A., Fillius, R. W., and Mullen, E. G.: Injection of electrons and protons with energies of tens of mev into l < 3 on 24 march 1991, Geophys. Res. Lett., 19, 821–824, doi:10.1029/92GL00624, 1992.; Boaghe, O. M., Balikhin, M. A., Billings, S. A., and Alleyne, H.: Identification of nonlinear processes in the magnetospheric dynamics and forecasting of dst index, J. Geophys. Res., 106, 30047–30066, 2001.; Boynton, R. J., Balikhin, M. A., Billings, S. A., Wei, H. L., and Ganushkina, N.: Using the narmax ols-err algorithm to obtain the most influential coupling functions that affect the evolution of the magnetosphere, J. Geophys. Res., 116, A05218, doi:10.1029/2010JA015505, 2011.; Boynton, R. J., Balikhin, M. A., Billings, S. A., Reeves, G. D., Ganushkina, N., Gedalin, M., Amariutei, O. A., Borovsky, J. E., and Walker, S. N.: The analysis of electron fluxes at geosynchronous orbit employing a narmax approach, J. Geophys. Res. Space Physics, 118, 1500–1513, doi:10.1002/jgra.50192, 2013.; Burton, R. K., McPherron, R. L., and Russull, C. T.: An empirical relationship between interplanetary conditions and dst, J. Geophys Res., 80, 4204–4214, 1975.; Daglis, I. A., Thorne, R. M., Baumjohann, W., and Orsini, S.: The terrestrial ring current: Origin, formation, and decay, Rev. Geophys., 37, 407–438, doi:10.1029/1999RG900009, 1999.; Hanser, F. A.: Eps/hepad calibration and data handbook, Technical report, Tech. Rep. GOESN-ENG-048D, Assurance Technol. Corp., Carlisle, Mass., 2011.; Horne, R. B., Thorne, R. M., Glauert, S. A., Albert, J. M., Meredith, N. P., and Anderson, R. R.: Timescale for radiation belt electron acceleration by whistler mode chorus waves, J. Geophys. Res., 110, A03225, doi:10.1029/2004JA010811, 2005.; Hudson, M. K., Kotelnikov, A. D., Li, X., Roth, I., Temerin, M., Wygant, J., Blake, J. B., and Gussenhoven, M. S.: Simulation of proton radiation belt formation during the march 24, 1991 ssc, Geophys. Res. Lett., 22, 291–294, doi:10.1029/95GL00009, 1995.; Ivanova, T. A., Kuznetsov, S. N., Sosnovets, E. N., and Tverskaya, L. V.: Dynamics of the low-latitude limit of penetration of low-energy solar protons into the magnetosphere, Geomagn. Aeron., Engl. Transl., 25, 5–8, 1985.; Kan, J. R. and Lee, L


 

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