1997/05/12 - 1997/05/15 Sun-Earth Connection Event

DST (and Kp) index plot

Solar wind plot

 

CME image: C3 at 1997/05/12 14:51 UT, direct

CME image: C3 at 1997/05/12 14:51 UT, direct, radio-spoked

CME image: C3 at 1997/05/12 14:51 UT, running difference

CME image: C3 at 1997/05/12 14:51 UT, running difference,radial-spoked

CME image: C2 at 1997/05/12 08:35 UT, direct

CME image: C2 at 1997/05/12 08:35 UT, running difference

EIT image at 1997/05/12 05:07 UT, direct

EIT image at 1997/05/12 05:07 UT, running difference

CME height-time plot: first order fit

CME height-time plot: second order fit

 

GOES X-ray plot

 

Dst 1997/05/15 12:00 UT (-115)

CME 1997/05/12 06:30 UT (1 to 1, G)

PA-halo, AW 360, V 306 km/s

EIT dimming/wave/post-arcade, GOES C1.3 flare

NOAA 8038, N21W06

In solar wind data, see shock and magnetic cloud. The southern field occurred at the end of the shock sheath and the beginning of the cloud. The cloud is identified in Lepping list, Gopal 2000 and Webb 2000.

Shock, ~9-hour from 97/05/15 0 UT to 97/05/16 09 UT. The B jumped from 5 nT to 25 nT. V jumped from 350 km/s to 470 km/s. Te from 8 ev to 13 ev, and TI from 3 ev to 14 ev. Ion N from 10 to 30 cm^-3.

Magnetic cloud, 16-hour from 97/05/15 09 UT to 97/05/16 01 UT. See B rotation in X, Y and Z component. B peaked at the beginning of the cloud at 25 nT, and gradually decreased to 5 nT. V maintained at ~500 km/s which show no expansion feature. N and T are low inside the cloud.