A major 'fountain' prominence or spray activity, associated with a flare in McMath Region 15808 on the SE-limb, occurred on 1 February 1979 at 0905 UT. This region was about 14 degree behind the limb on February 1. The frame at 093510 UT indicates helical patterns delineating the internal magnetic field lines. A surge occurring at 0920 UT suddenly lifted the spray material to greater heights with a speed of about 250 km/sec. |