Indian Journal of Physics

, Volume 86, Issue 7, pp 563–567 | Cite as

Sunspots and geomagnetic storms during solar cycle-23

  • B. S. Rathore
  • S. C. Kaushik
  • R. S. Bhadoria
  • K. K. Parashar
  • D. C. Gupta
Original Paper
First Online:
Received:
Accepted:

Abstract

Geo-magnetic storms generally occur due to abnormal conditions in the interplanetary magnetic field (IMF) and solar wind plasma emissions caused by various solar activities. The Disturbance storm time (Dst) index is used to identify more than 220 storms which occurred in time interval 1996–2007, the span of solar cycle-23. Using the minimum Dst value as an indicator, we classify the storms as moderate (138), strong (67), severe (11), and great (4). We have analyzed and studied them statistically. We have found that yearly occurrences of geomagnetic storm are strongly correlated with 11 year sunspot cycle, but no significant correlation between the maximum and minimum phase of solar cycle-23 has been found. It is also found that solar cycle-23 is remarkable for occurrence of intense geomagnetic storms during its declining phase. It is also observed that Halo CME is the main cause to produce geomagnetic storms. The results are discussed in the present paper.

Keywords

Geomagnetic storm Interplanetary magnetic field (IMF) Disturbance storm time (Dst) and solar cycle Coronal mass ejection 

PACS Nos.

96.60.-j 96.60.qd 94.05.sd 94.05.S- 94.05.Sd 
This is a preview of subscription content, log in to check access.

Notes

Acknowledgments

Authors are grateful to Director of Inter University Centre of Astronomy and Astrophysics (IUCAA) for providing research facilities at IUCAA Pune (India). Authors are also thankful to Durgesh Tripathi (IUCAA) for their valuable discussion about CMEs.

References

  1. [1]
    S W Kahler Anne. Rev. Astron. Astrophys. 30 113 (1992)ADSCrossRefGoogle Scholar
  2. [2]
    J T Gosling J. Geophys. Res. 98 18937 (1993)ADSCrossRefGoogle Scholar
  3. [3]
    N U Crooker Nature 365 595 (1994)ADSCrossRefGoogle Scholar
  4. [4]
    C W Snyder, M Neugebaur and U R Rao J. Geophys. Res. 68 6361 (1963)ADSGoogle Scholar
  5. [5]
    Feynman J. Rev. Geophys. Space Phys. 21 338 (1983)ADSCrossRefGoogle Scholar
  6. [6]
    Y M Wang and N R Sheeley (Jr.) Geophys. Res. Lett. 24 3141 (1997)ADSCrossRefGoogle Scholar
  7. [7]
    I Sabbah Geophys. Res. Lett. 27 13 (2000)CrossRefGoogle Scholar
  8. [8]
    A Jain, S Tiwari, S Jain and A K Gwal Indian J. Phys. 85 1367 (2011)ADSCrossRefGoogle Scholar
  9. [9]
    P Pal, A Bhowmik, R Roy, R Ali, A Choudhury, A Guha and B K De Indian J. Phys. 84 641 (2010)CrossRefGoogle Scholar
  10. [10]
    C A Loewe and G W Prolss J. Geophys. Res. 102 14209 (1997)ADSCrossRefGoogle Scholar
  11. [11]
    D A Couzens and J H King Interplanetary Medium Data Book NSSDS WDC-A Maryland Suppl. 3 (1986)Google Scholar
  12. [12]
    J H King Interplanetary Medium Data Book NSSDS WDC-A Maryland (1997)Google Scholar
  13. [13]
    J H King and N E Papitashvili Interplanetary Medium Data Book NSSDC WDC-A (1998)Google Scholar
  14. [14]
    W D Gonzalez and A L C Gonzalez Planet. Space Sci. 38 181 (1990)ADSCrossRefGoogle Scholar
  15. [15]
    B Singh, S C Dubey, D P Tiwari and A K Tripathi Proc. ICRC 1 (2005)Google Scholar
  16. [16]
    A Raizada, S Kumar and S Khare Indian J. Phys. 84 183(2010)ADSCrossRefGoogle Scholar
  17. [17]
    S Kumar and M P Yadav Proc. ICRC 3565 (2001)Google Scholar
  18. [18]
    P K Shrivastava and A M Jaiswal Proc. ICRC 31 1 (2009)Google Scholar
  19. [19]
    P K Shrivastava and B K Mishra Proc. ICRC 32 280 (2011)Google Scholar
  20. [20]
    N Gopalswamy ASI Conference Series 2 241 (2011)Google Scholar
  21. [21]
    S C Kaushik and P K Shrivastava Ind. J. Radio Space Phys. 28 203 (1999)ADSGoogle Scholar
  22. [22]
    B S Rathore, S C Kaushik, K K Parashar and P Kapil Proceeding of the 32nd ICRC 407 (2011)Google Scholar

Copyright information

© Indian Association for the Cultivation of Science 2012

Authors and Affiliations

  • B. S. Rathore
    • 1
  • S. C. Kaushik
    • 1
    • 2
  • R. S. Bhadoria
    • 1
  • K. K. Parashar
    • 1
  • D. C. Gupta
    • 1
  1. 1.School of Studies in PhysicsJiwaji UniversityGwaliorIndia
  2. 2.Govt. PG CollegeDatiaIndia

Personalised recommendations