World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

The Effect of Upstream Turbulence and Its Anisotropy on the Efficiency of Solar Wind – Magnetosphere Coupling : Volume 15, Issue 4 (02/07/2008)

By Jankovičová, D.

Click here to view

Book Id: WPLBN0003985656
Format Type: PDF Article :
File Size: Pages 7
Reproduction Date: 2015

Title: The Effect of Upstream Turbulence and Its Anisotropy on the Efficiency of Solar Wind – Magnetosphere Coupling : Volume 15, Issue 4 (02/07/2008)  
Author: Jankovičová, D.
Volume: Vol. 15, Issue 4
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Vörös, Z., Šimkanin, J., & Jankovičová, D. (2008). The Effect of Upstream Turbulence and Its Anisotropy on the Efficiency of Solar Wind – Magnetosphere Coupling : Volume 15, Issue 4 (02/07/2008). Retrieved from http://hawaiilibrary.net/


Description
Description: Institute of Atmospheric Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic. The importance of space weather and its forecasting is growing as interest in studying geoeffective processes in the Sun – solar wind – magnetosphere – ionosphere coupled system is increasing. This paper introduces the proper selection criteria for solar wind magnetic turbulence events during duskward electric field and southward Bz driven geomagnetic storms. Two measures for the strength of solar wind fluctuations were investigated: the standard deviations of magnetic field components and a proxy for the so-called Shebalin anisotropy angles. These measures were compared to the strength of geomagnetic storms obtained from a SYM-H index time series. We found a weak correlation between standard deviation of interplanetary magnetic field GSM component Bz and SYM-H index, and a strong correlation between Shebalin anisotropy angle and the SYM-H index, which can be the result of an increase of probability of magnetic reconnection in fluctuating magnetic fields.

Summary
The effect of upstream turbulence and its anisotropy on the efficiency of solar wind – magnetosphere coupling

Excerpt
Borovsky, J. E. and Funsten, H. O.: Role of solar wind turbulence in the coupling of the solar wind to the Earth's magnetosphere, J. Geophys. Res., 108(A6), 1246, doi:10.1029/2002JA009601, 2003.; Bruno, R. and Carbone, V.: The solar wind as a turbulence laboratory, Living Rev. Solar Phys., 4, 1–186, 2005.; Burlaga, L. F.: Intermittent turbulence in the solar wind, J. Geophys. Res., 96, 5847–5851, 1991.; Burlaga, L. F. and Forman, M. A.: Large-scale speed fluctuations at 1 AU on scales from 1 hour to 1 year: 1999 and 1995, J. Geophys. Res., 107(A11), 1403, doi:10.1029/2002JA009271, 2002.; D'Amicis, R., Bruno, R., and Bavassano, B.: Is geomagnetic activity driven by solar wind turbulence?, Geophys. Res. Lett., 34, L05108, doi:10.1029/2006GL028896, 2007.; Cho, J., Lazarian, A., and Vishniac, E. T.: MHD turbulence: Scaling laws and astrophysical implications, in: Turbulence and magnetic fields in astrophysics, edited by: Falgarone, E. and Passot, T., Springer LNP 614, 56–98, 2003.; Gonzalez, W. D. and Tsurutani, B. T.: Criteria of interplanetary parameters causing intense magnetic storms ($D_st<$−100 nT), Planet. Space Sci., 35, 1101–1109, 1987.; Gonzalez, W. D., Tsurutani, B. T., and de Gonzalez, A. L. C.: Interplanetary origin of geomagnetic storms, Space Sci. Rev., 88, 529–562, 1999.; Gonzalez, W. D., Tsurutani, B. T., Lepping, R. P., and Schwenn, R.: Interplanetary phenomena associated with very intense geomagnetic storms, J. Atmosph. Solar Terr. Phys., 64, 173–181, 2002.; Jankovičová, D., Vörös, Z., and \vSimkanin, J., The influence of solar wind turbulence on geomagnetic activity, Nonlin. Processes Geophys., 15, 53–59, 2008.; Matthaeus, W. H., Oughton, S., Ghosh, S., and Hossain, M.: Scaling of anisotropy in hydromagnetic turbulence, Phys. Rev. Lett., 81, 2056–2059, 1998.; McPherron, R. L., Baker, D. N., Bargatze, L. F., Clauer, C. R., and Holzer, R. E.: IMF control of geomagnetic activity, Adv. Space Res., 8, (9)71–(9)86, 1988.; Oughton, S., Matthaeus, W. H., and Ghosh, S.: Scaling of spectral anisotropy with magnetic field strength in decaying magnetohydrodynamic turbulence, Phys. Plasmas, 5(12), 4235–4242, 1998.; Oughton, S., Matthaeus, W. H., and Ghosh, S.: Anisotropy and energy decay in magnetohydrodynamic turbulence: theory and solar wind observations, in: Advances in Turbulence VII, Proceedings of the Seventh European Turbulence Conference, Saint-Jean Cap Ferrat, France, 30 Jun–3 Jul, edited by: Frisch, U., Kluwer, ISBN 0-7923-5115-0, 1998.; Sorriso-Valvo, L., Carbone, V., Veltri, P., Consolini, G., and Bruno, R.: Intermittency in the solar wind turbulence through probability distribution functions of fluctuations, Geophys. Res. Lett., 26, 1801–1804, 1999.; Shebalin, J. V., Matthaeus, W. H., and Montgomery, D. C.: Anisotropy in MHD turbulence due to a mean magnetic field, J. Plasma Phys., 29, 525–547, 1983.; Vassiliadis, D., Klimas, A. J., Baker, D. N., and Roberts, D. A.: The nonlinearity of models VB(south)-AL coupling, J. Geophys. Res., 101, 19 779–19 788, 1996.; Vörös, Z., Jankovičová, D., and Kovács, P.: Scaling and singularity characteristics of solar wind and magnetospheric fluctuations, Nonlin. Processes Geophys., 9, 149–162, 2002.; Wanliss, J. A., and Showalter, K. M.: High-resolution global storm index: $D_st$ versus SYM-H, J. Geophys. Res., 111, A02202, doi:10.1029/2005JA011034, 2006.

 

Click To View

Additional Books


  • Structuring of Turbulence and Its Impact... (by )
  • A Mechanistic Modelling and Data Assimil... (by )
  • A Probabilistic Seismic Hazard Model Bas... (by )
  • Intensity of Convective Motions in Marin... (by )
  • Intrinsic Low-frequency Variability of t... (by )
  • Excitation of Kinetic Alfvén Turbulence ... (by )
  • How Much Does Inclusion of Non-linearity... (by )
  • Joint State and Parameter Estimation wit... (by )
  • On the Scaling Characteristics of Observ... (by )
  • Tempting Long-memory - on the Interpreta... (by )
  • On Reliability Analysis of Multi-categor... (by )
  • Multivariate Autoregressive Modelling of... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.