Event Selection Guide

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1991 1992 1993 1994 1995 1996 1997 1998  

Magnetic Storms (1997) - *Sources of Information
Date   Day No.  Min Dst  Solar Wind &  IMF Data Type of Solar Wind Transients Abbreviations Guide  Interesting Aspects  Space Weather Effects  Solar Source Disturbance  Forecasts & Warnings  References
 10-11 Jan 1997  010- 011 -78 plot

 Wind-kpot, UCLA-IMP8 UCLA-Wind1 UCLA-Wind2 Omniweb

 S-N magnetic cloud /corotating stream. IMC from 10Jan 05 UT - 11Jan 02UT ISTP event study. Strong energetic electronc acceleration. Magnetic cloud preceeded by 12hrs of IMF fluctuations. Strong dawn-dusk asymmetry in the ring current. FAC controlled by -IMF and little affected by dynamic pressure increases. AE >2000 nT. Estimated 400 GW dissipated - 47.5% joule heating, 30% ring current, 22.5% auroral precipitation -----SHINE recurrent structures event study. CEDAR storm study (6-10 Jan) and Incoherent Scatter Coordinated Observation Days. SAMPEX - SOHO Celias plot  Loss of Telstar 401      Baker et al., JGR,17279, 1998; Laakso, et al., GRL, 3007, 1998.; Buhler, et al., GRL 2983, 1998; Lanzerotti et al., GRL, 2967, 1998; Le et al., GRL 2533, 1998; Safrankova et al., GRL, 2549, 1998; Leamon et al, GRL, 2505, 1998.; Lu et al., JGR, 11685, 1998; Zhao & Hoeksema, GRL, 2965, 1997
 8-12 Feb 1997  039- 043 -68 plot

 Wind-kplot, UCLA-IMP8 UCLA-Wind1 UCLA-Wind2 Omniweb

  IS / EyC, BzS (High speed stream on 8 Feb, shock on 9 Feb -- plot taken from SOHO CELIAS) IMC from 10Feb 03UT - 10Feb 18UT      Partially earth-directed CME with related geomagnetic activity (STEP Interval) --IACG Campaign 3: 8 Feb possible eruption on W. limb (1703-2320UT)    
 16-18 Feb 1997  047- 050 -54 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  BzS, BzN, SBC          
 27 Feb - 04 Mar 1997  058- 063  -76 plot1 plot2

 UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

            
 28-31 Mar 1997  087- 090 -63 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

            
 10-12 Apr 1997  100- 102 -82 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

  IR, BzS, BzN, PC  ISTP event study. CEDAR storm study (10-11 Apr) and Incoherent Scatter Coordinated Observation Days. SAMPEX sees enhanced eletron belts        
 16-21 Apr 1997  106- 111 -77 plot

Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

            
 21-23 Apr 1997  111- 113 -107 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

  Magnetic Cloud 21Apr 15 UT - 23 Apr 07UT          
 1-4 May 1997  121- 124 -64 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

            
 15-18 May 1997  135- 138 -115 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

  S-N magnetic cloud extending from 15May 09UT - 16May 01UT

 Data suggest wave acceleration of radiation belt electrons on time scales of tens of minutes at L=3-4. SAMPEX plots

Case where an active magnetosphere suddenly shuts down, convection is reduced, the hot plasma fades out, plasmasphere builds up. Should extend study to May 24 to view magnetosphere as it shuts down (Borovsky, private communication, 1998)

        Baker et al.,GRL, 2975, 1998.
 26-29 May 1997  146- 149 -73 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

  PC, BzS, BzN          
 7-11 Jun 1997  158 - 162 -84 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1 UCLA-Wind2 Omniweb

  BzS; Magnetic Cloud from 08jun 22UT to 10jun 01 UT.          
 15-16 Jul 1997  196- 198 -45 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  PC/EyC,, BzS, BzN; Magnetic cloud from 15jul 06UT to 16jul 01UT.          
 03-04 Aug 1997  215- 217 -49 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  Magnetic cloud from 03aug 14UT to 04aug 01UT          
 03-06 Sep 1997  246- 250 -98 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

 MISC (Complex ejecta structure with some signature of an IMC possibly associated with the halo CME on Aug 29.      Halo CME on Aug 29    
 17-19 Sep 1997  260- 263 -56 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  EyC/BzS/PC, SBC/PC, MISC; Magnetic cloud from 18 Sep 00UT to 20 Sep 12UT.          
 30 Sep - 05 Oct 1997  273- 278  -98 plot1 plot2

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  MISC (Extended strong IMF, ejecta/IMC?); magnetic cloud from 01 Oct 16UT to 02 Oct 23UT.  ISTP event study  INSAT 2-D failure on 1 Oct 1630 UT      
 08-16 Oct 1997  281- 289 -130 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  IMC/ BzS/ BzN (plasma sheath ahead of IMC) Magnetic cloud from 10 Oct 23UT to 12 Oct 00UT          
 23-31 Oct 1997  296- 304 -64 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  IS, EyC, BzS, SBC, EyC, PC, MISC          
 06-09 Nov 1997  309- 313  -110 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  BzS, IS, MISC; IMC from 7 Nov 5UT to 8 Nov 12UT ; 7-10 Nov: counterstreaming electron event; 6 Nov: solar energetic particles ESA Space Environment and Effects Analysis Section Study of the solar energetic protons events 3-9 Nov.  ISTP event study.    Large CME observation by SOHO    
 09-12 Nov 1997  313- 316 -54 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  IS, BzS, SBC, PC (F IS during extended interval of BzS)          
 22-27 Nov 1997  326- 331 -108 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  BzS, BzN, BzS (Ejecta, possibly IMC) ; 22-26 Nov: counterstreaming electron event          
 10-13 Dec 1997  344-347 -53 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  IS, BzS, EyC, PC, SBC (Ejecta, extended low beta plasma)          
 30 Dec - 04 Jan 1997/98  97364- 98004 -77 plot

 Wind-kplot, UCLA-IMP8, UCLA-Wind1, UCLA-Wind2 Omniweb

  BzS, BzN, Misc (Ejecta, possibly an IMC); 30 Dec - 02 Jan: counter- streaming electron event