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CLASSIFICATION OF THE INTERPLANETARY SHOCKS BY SHOCK DRIVERS

  • OH SU YEON (Department of Astronomy & Space Science, Chungnam National University) ;
  • YI YU (Department of Astronomy & Space Science, Chungnam National University) ;
  • NAH JA-KYUNG (Department of Astronomy & Space Science, Chungnam National University) ;
  • CHO KYUNG-SEOK (Radio Research Laboratory, Space Environment Research)
  • 발행 : 2002.09.01

초록

From the data of solar wind observation by ACE spacecraft orbiting the Earth-Sun Lagrangian point, we selected 48 forward interplanetary shocks(IPSs) occurred in 2000, maximum solar activity period. Examining the profiles of solar wind parameters, the IPSs are classified by their shock drivers. The significant shock drivers are the interplanetary coronal mass ejection(ICME) and the high speed stream(HSS). The IPSs driven by the ICMEs are classified into shocks driven by magnetic clouds and by ejectas based on the existence of magnetic flux rope structure and magnetic field strength. Some IPSs could be formed as the blast wave by the smaller energy and shorter duration of shock drivers such as type II radio burst. Out of selected 48 forward IPSs, $56.2\%$ of the IPSs are driven by ICME, $16.7\%$ by HSS, and $16.7\%$ of the shocks are classified into blast-wave type shocks. However, the shock drivers of remaining $10\%$ of the IPSs are unidentified. The classification of the IPSs by their driver is a first step toward investigating the critical magnitudes of the IPS drivers commencing the magnetic storms in each class.

키워드

참고문헌

  1. Berdichevsky, Daniel. B., Szabo, Adam, Lepping, R. P., &: Vinas, A. F., 2000, Interplanetary fast shocks and as-sociated drivers observed through the 23rd minimum by Wind over its first 2.5 years, J. Geophys. Res., 105, 27289 https://doi.org/10.1029/1999JA000367
  2. Burlaga, L. F., Slittler, E., Mariani, F. & Schwenn, R., 1981, Magnetic loop behind an interplanetary shock:Voyager, Helios and IMP 8 observations, J. Geophys. Res., 86, 6673 https://doi.org/10.1029/JA086iA08p06673
  3. Burlaga, L. F., 1995, Interplanetary Magnetohydrodynamics, Oxford University Press, PP.89-93
  4. Burlaga, L. F., Skoug, R. M., Smith, C. W., Webb, D. F., Zurbuchen, T. H, & Reinard Alysha, 2001, Fast ejecta during the ascending phase of solar cycle 23:ACE obser-vations, 1998-1999, J. Geophys. Res., 106, 20957 https://doi.org/10.1029/2000JA000214
  5. Foukal, P. V., 1995, Solar Astrophysics, John Wiley & Sons, pp.413-416
  6. Geiss, J., Gloeckler, G., & Steiger, R. von., 1995, Observa-tions of the solar wind and interstellar pick-up ion popu-lations in the heliosphere with ULYSSES, Space Science Rev., 72, 49 https://doi.org/10.1007/BF00768753
  7. Kallenrode, M-B., 2000, Space Physics, 2nd Ed., Sprmger-Verlag, PP. 143-148
  8. McComas, D. J., Bame, S. J., Barraclough, B. L., Feld-man, W. C., Funsten, H. 0., Gosling, J. T., Riley, P., Skoug, R., Balogh, A., Forsyth, R., Goldstein, B. E., & Neugebauer, M., 1998, An unusual coronal mass ejec-tion: First Solar Wind Electron, Proton, Alpha Monitor (SWEPAM) results from the Advanced Composition Ex-plorer, Geophys. Res. Lett., 25, 1 https://doi.org/10.1029/97GL03444
  9. Smith, Z., & Dryer, M., 1990, MHD study of temporal and spatial evolution of simulated interplanetary shocks in the ecliptic plane within 1 AU, Solar Physics, 129, 387 https://doi.org/10.1007/BF00159049

피인용 문헌

  1. A statistical comparison of interplanetary shock and CME propagation models vol.108, pp.A12, 2003, https://doi.org/10.1029/2003JA010029
  2. Solar Cycle Variation of the Interplanetary Forward Shock Drivers Observed at 1 AU vol.245, pp.2, 2007, https://doi.org/10.1007/s11207-007-9042-2
  3. Forbush decreases observed by Daejeon neutron monitor vol.57, pp.3, 2016, https://doi.org/10.1016/j.asr.2015.11.026
  4. Are all leading shocks driven by magnetic clouds? vol.115, pp.A4, 2010, https://doi.org/10.1029/2009JA014875