Note on tracking Sun-Earth connection event

ICME Event: 2010/02/11

Observer: Jie Zhang on 2019/07/13

1. ICME
  1.1. Catalog
     # Identified in ICME catalogs: Richardson & Can List
      RC catalog:
      Disturbance start time: 2010/02/11 00:00 UT
      Ejecta      Start time: 2010/02/11 08:00 UT
      Ejecta      End   time: 2010/02/12 03:00 UT
      dv = 70 km/s, v = 360 km/s, vmax= 380 km/s
      MC index:     3
      Dst:        -7 nT
      Suggested source CME: 2010/02/07 03:54 UT
      V_transit:  450 km/s
      
  1.2. Comments
      Overall ICME quality index: 2
      ICME signatures: Bmax: 9.9 nT
                       No Bz rotation, no other obvious signatures
      Others ICME signature: no
      Peculiar behavior: high density and low temperature in the start
                         low density and high temperature in the end
			 relatively high plasma beta

      Disturbance time 362 km/s  -> search window 115 hrs -> 2010/02/06 15 UT

2. CME
   2.1. A. Candidate A
    A.1. LASCO:    
      #CME 2010/02/07 03:12 UT, full halo
      
      From CDAW: full halo, vel=421 km/s
      https://cdaw.gsfc.nasa.gov/movie/make_javamovie.php?stime=20100207_0228&etime=20100207_0813&img1=lasc2rdf&title=20100207.035403.p113g;V=421km/s

      From SEEDS C2: Vel=342, PA=91, AW=64
      http://spaceweather.gmu.edu/seeds/mkmovie.php?cme=20100207.035403.w064.v0342.p091&frame=7

      A halo CEM emcompassing the southern pole; bright area moves toward the east limb

    A.2 .STEREO: 
           Also seen as a major CME toward the Earth in COR2-A and COR2 B, but not halo
	   Vel=528 km/s, PA=105
	   http://spaceweather.gmu.edu/seeds/mkmovie.php?cme=20100207.042400.w091.v0528.p105&frame=5&cor2=a

    A.3.GOES
	  :M6.4,onset at 2010/02/07 02:20 UT
	   NOAA 11045,  AR11401 at N24E01
				
   A.4. EIT
   https://cdaw.gsfc.nasa.gov/CME_list/nrl_mpg/2010_02/100207_eit_195.mpg

   A.5.Comment: Likely the source. The timing and location are all right.
	  

   2.2. Comment
        Very likely source is candaite A: 2010/02/07 03:12 UT CME, no other alternative candidates in the search window.


3. Other Comments


4. Summary
    SW index 2
    Source index 1
    Overall index 2.