 | Superactive region NOAA9077 produced 3 X-class, 10 M-class (2>M5) and 16 C-class flares during its passage over the solar disk in 7-21 July 2000.
 | The largest solar radio burst in the 23rd solar cycle at 10 cm wavelegnth (3085 SFU at 2840 MHz) on July 10 by the M5.7/2B flare/CME event
| The second largest X-class event in the 23rd solar cycle: X5.7/3B flare/Halo CME on July 14
| |
| Geo-effects of the energetic event on July 14:
| The largest proton event since March 1991;The largest magnetospheric storms since 1989;Failure of ASCA, etc.
|
| Solar Radio Spectrometers at HSOS observed many events in the NOAA9077 AR (including 2 X-class, 2 M5.7class major events). SMFT at HSOS recorded a number of vector magnetograms, and Ha, Hb filterograms, etc.
| | |
