sfr910927: Al1, AlMg, Mg3, Al12, and Be119, 28SEP91 09:25:55 - 16:11:15, 256x256 FR.
See the PASJ paper and other notes. These include a summary of all work.
The great continuity of the initial structures with the latter. The northern arches are not affected until the very end when the arcade finally rises intothem. There is great continuity between the initial brightenings up to 11:24 and the new structure at 12:27. The southern end, where the high overlying arches appear to have gone and the new bright tails are visible, is the most changed.
What about the flux leading out to the west? Is there an overlying arcade, or is it all open around the juncture. There seems to be very little cahnge in these at all.
The tails are clearly seen to expand up into the over lying arcade, and the bright ridge extend down them. This indicates that there is a flow of denser/hotter plasma.
Later on in the north it seems we see heated fields at several levels as the arcade grows up into the existing overlying loops.
Not only do the loops rotate counterclockwise, but the axis itself and the whole structure seem to rotate clockwise.
The tails are twisted counter-clockwise as you look up them from the south to north. This is right-hand screw helicity.
The short stubby western tails, eventually merge into the soutern end of the arcade, while the eastern long tails unwind and contribute the remaining underlying string seen at the end.
There is a change in the shape of the northern large arcade loops early on, as if the central hole is being elongated and pulled out buy the rising structure.
There may be some slight darkening along the filament channel, but in the main the later southern hole is the only major darkening.
This is a "rolling hole" as we have so often seen since.
Counter-clockwise rotation (see note above).
