
LASCO Activity Report for
August 21, 2001 SOHO Science Daily Meeting
Planner: K. Schenk, G. Lawrence
Event times are first frame seen in C2 camera unless otherwise noted.
These are preliminary observations for the daily SOHO science discussions.
Final analysis is reported on the Lasco CME list.
An archive of these reports is available.
Points Of Interest
Proton fluxes now normal in both coronagraphs following the
halo CME and proton storm late on 2001/8/15.
2001/08/19
06:06 UT N West Thick wide bright front with cavity and core
and some arcades. Streamer to N disrupted.
11:30 UT W Limb Faint wide loop front follows narrower faster
front. Core-like material follows at 14:31
12:54 UT E Limb Bright front, fairly narrow, cavity follows
20:30 UT E Limb Bright narrow ragged front with cavity and core
21:30 UT S East Faint loop front fills quadrant and crosses
S Pole. Some gusty outflow in SW. Probably
backsided
2001/08/20
00:54 UT N East Small bright front/large blob, fairly fast
08:31 UT S East Narrow bright spray, narrow front follows
12:54 UT S West Narrow loop front
17:06 UT S West Fairly faint slow ragged front along faint
diffuse streamer. Prolonged gusty outflow follows
19:50 UT E Limb Initially bright front fades in C2, cavity follows,
some slower gusty outflow. Further similiar event
at 11:06 8/21
2001/08/21
05:26 UT N West Nebulous front with faint arcades
12:06 UT S West Wide bright loop front with cavity and core,
currently in progress
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771