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Event 1998.08.24 - (1998-236)

Particle event: To(Ep>10 MeV) - 24d23h
Tmax1(Ep>10 MeV) - 25d02h, Jmax1(Ep>10 MeV) - 320
/cm2.s.sr
Tmax2(Ep>10 MeV) - 26d07h, Jmax2(Ep>10 MeV) - 210
/cm2.s.sr
Duration of the event - 6 days
Energy of the SCR and 0.1 GCR fluxes balance -
Eb(max1) = 720 MeV
- Eb(max2) = 310 MeV
Sources: ? solar flare 24d21h48m, 3B/X1.0, N35E09, АR8307
Main burst X-ray 1-8 ?: onset - 24d21h50m, max - 24d22h12m, Ф = 0.16 J/m2
CME: gap
Particle fluxes and associated phenomena
[pic]
Integral time-of-maximum proton spectrum [pic]




Integral fluxes of protons for the event of 1998 August 24

|S/c, |Eр, MeV |To |Tmax |Jmax, |Dura-|Comments |
|instruments| | | |/cm2.s.sr |tion | |
|GOES-10 | | | | | | |
|EPS |>5 |23h |25d02h/26d07|158/1730 |6d | |
| | | |h | | | |
|EPS |>10 |23h |25d02h/26d07|96/320 |6d | |
| | | |h | | | |
|EPS |>30 |23h |25d02h/26d04|25/34 |3d | |
| | | |h | | | |
|EPS |>50 |23h |25d02h/26d04|10/6.7 |2d | |
| | | |h | | | |
|EPS |>60 |23h |25d02h/26d04|7.5/3 |2d | |
| | | |h | | | |
|EPS |>100 |23h |25d01h/26d04|3.2/0.3 |2d | |
| | | |h | | | |
|METEOR-2 | | | | | | |
|CBM |>5 |- |- |- |- | |
|CBM |>15 |- |- |- |- | |
|CBM |>25 |23h |25d < 22h/- |>19/ - |5d | |
|CBM |>40 |23h |25d < 21h/- |>18.5/ - |3d | |
|BP | >90 |- |25d < 21h/- |>0.7/ - |- | |
|ChD |>600 |- |- |- |- | |
|POES-15 | | | | | | |
|MEPED |>0.24 |23h |25d00h/26d07|630/108600 |- | |
| | | |h | | | |
|MEPED |>0.8 |23h |25d00h/26d07|460/28000 |- | |
| | | |h | | | |
|MEPED |>2.5 |23h |25d00h/26d07|350/8000 |- | |
| | | |h | | | |
|MEPED |>6.9 |23h |25d00h/26d07|300/700 |- | |
| | | |h | | | |
|MEPED |>16 |23h |25d00h/26d07|65.1/135.1 |- | |
| | | |h | | | |
|MEPED |>36 |23h |25d00h/26d07|30/20.5 |- | |
| | | |h | | | |
|MEPED |>70 |23h |25d00h/26d07|5.23/1.25 |- | |
| | | |h | | | |
|MEPED |>140 |23h |25d00h/26d07|2.24/0.28 |- | |
| | | |h | | | |
|IMP-8 | | | | | | |
|CPME |>1 |>20h |25d08h/26d07|1180/16000 |7d | |
| | | |h | | | |
|CPME |>4 |>20h |25d08h/26d07|270/2590 |7d | |
| | | |h | | | |
|CPME |>10 |>20h |25d08h/26d07|90/455 |5d | |
| | | |h | | | |
|CPME |>30 |>20h |25d08h/26d07|20,3/50, |4d | |
| | | |h | | | |
|CPME |>60 |>20h |25d08h/26d07|10.5/29 |4d | |
| | | |h | | | |
|ACE | | | | | | |
|SIS |>10 |23h |25d03h/ - |150/ - |- | |
|SIS |>30 |23h |25d01h/ - |42/ - |- | |
|BALLOОNS | | | | | | |
|Mi |>154 | |25d(08h-09h)|2.7/ - | | |
| | | |/ - | | | |
|Mi |>215 | |25d(08h-09h)|0.8/ - | | |
| | | |/ - | | | |
|Mi |>357 | |25d(08h-09h)|0.16/ - | | |
| | | |/ - | | | |
|Mi |>150 | |- |- /0.2 | | |
| | | |/26d(07h-07h| | | |
| | | |) | | | |
|Mi |>164 | |- |- /0.14 | | |
| | | |/26d(07h-07h| | | |
| | | |) | | | |
|Mi |>189 | |- |- /0.05 | | |
| | | |/26d(07h-07h| | | |
| | | |) | | | |
|NM | | | | | | |
|Network |>1000 | |25d01h/ - |1.75ћ10-03/ | | |
| | | | |- | | |

Differential fluxes of protons for the event of 1998 August 24

|S/c, |?Е, MeV |To |Tmax |Jmax. |Dura-|Comments |
|instruments| | | |/cm2.s.sr.Me|tion | |
| | | | |V | | |
| | | |Protons | | | |
|IMP-8 | | | | | | |
|CPME |1-2 |>20h |25d08h/26d07|479/8340 |6d | |
| | | |h | | | |
|CPME |2-4.6 |>20h |25d08h/26d07|192/2220 |6d | |
| | | |h | | | |
|CPME |4.6-15 |>20h |25d08h/26d07|17,4/179 |6d | |
| | | |h | | | |
|CPME |15-25 |>20h |<25d04h/26d0|3,4/14,7 |2d | |
| | | |7h | | | |
|CPME |25-48 |>20h |<25d04h/26d0|0,5/1,0 |2d | |
| | | |7h | | | |
|CPME |48-96 |>20h |<25d04h/26d0|0,14/0,6 |2d | |
| | | |7h | | | |
|CPME |96-145 |>20h |<25d04h/26d0|0,09/0,12 |2d | |
| | | |7h | | | |
|CPME |145-440 |>20h |<25d04h/26d0|0,01/0,003 |2d | |
| | | |7h | | | |
|SOHO | |Data |absent | | | |

References
Dietrich W. and C. Lopate. Measurements of iron reach SEP events using the
University of Chicago IMP-8 instrument. - Proc. 26th Int. Cosmic Ray Conf.,
Salt Lake City, USA, v.6, 71-74, 1999.
Leske R.A., R.A. Mewaldt, .C. Cummings, et.al., 2001.
Struminsky A.B. Prolonged release of > 100 MeV protons from local radiation
belts of the Sun. - Proc. 26th Annual Seminar "Physics of Auroral
Phenomena", Apatity, Russia, p.162-165, 2003.
Miroshnichenko L.I. and
J. Perez-Peraza. 2008.
































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