SMM C/P CME Event
14 April 1980 --- Day of Year (DOY): 105
A 4-image time sequence (north sector) taken by SMM on April 14, 1980 shows the outer and inner loops of a coronal mass ejection as it expands outward over the north pole of the sun.
Archetypal loop/cavity with structured, interior (prominence) loop/cavity. Inner loop emitting in line of h-alpha at 07:18 and 07:21. Event is superposed on rays. Western leg is superposed on streamer. Loop front flattens as it moves out through field of view. Region is blown out. Deflections.
Start/Stop Times in SMM Coronagraph Field of View:
April 14 04:49~08:47
Central Position Angle: ~005 degrees
Width (in degrees): ~051
Speed (in km/sec): 409 <--- Outer Loop
Speed (in km/sec): 374 <--- Outer Cavity
Speed (in km/sec): 365 <--- Inner Prominence Loop
Speed (in km/sec): 353 <--- Inner Cavity (below Prominence)
Detailed information on all SMM mass ejections is available in the SMM Catalogue of Coronal Mass Ejections