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91-11-07.DLY
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1991-11-08
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/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
07 NOVEMBER, 1991
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 07 NOVEMBER
------------------------------------------------------
PLEASE NOTE: Proton fluence values at greater than 1 MeV are now valid. The
satellite hardware problem has been rectified.
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 311, 11/07/91
10.7 FLUX=193.5 90-AVG=199 SSN=210 BKI=3322 2333 BAI=012
BGND-XRAY=C1.2 FLU1=3.2E+05 FLU10=1.1E+04 PKI=2212 2322 PAI=008
BOU-DEV=021,038,011,015,012,025,021,024 DEV-AVG=020 NT SWF=01:004
XRAY-MAX= M2.4 @ 0001UT XRAY-MIN= C1.1 @ 2329UT XRAY-AVG= C1.7
NEUTN-MAX= +007% @ 0910UT NEUTN-MIN= -004% @ 1920UT NEUTN-AVG= +3.1%
PCA-MAX= +0.3DB @ 1955UT PCA-MIN= -0.3DB @ 2320UT PCA-AVG= +0.0DB
BOUTF-MAX=55320NT @ 0523UT BOUTF-MIN=55284NT @ 1946UT BOUTF-AVG=55306NT
GOES7-MAX=P:+109NT@ 1559UT GOES7-MIN=N:-004NT@ 0034UT G7-AVG=+074,+043,+006
GOES6-MAX=P:+120NT@ 2222UT GOES6-MIN=E:-025NT@ 0317UT G6-AVG=+088,-003,+023
FLUXFCST=STD:193,190,192;SESC:190,185,185 BAI/PAI-FCST=007,007,007/010,010,010
KFCST=2233 3222 2233 3222 27DAY-AP=008,008 27DAY-KP=1112 3222 1112 3222
WARNINGS=
ALERTS=
!!END-DATA!!
BRIEF SUMMARY OF EVENTS
-----------------------
Solar activity became low today. After region 6906 (S16W42) produced
yesterdays class M2.8/1B flare at 23:59 UT on 06 November, the region
stabilized and began to slowly decay. The region has continued to gradually
decay throughout the period and has remained relatively dormant.
Regions 6908 (N21E26) and 6914 (S18W31) displayed some growth but have
not produced any notable flare activity.
The only other notable event was an eruptive prominence which was seen
reaching out to 0.32 solar radii at 07:28 UT. This occurred near N22E90,
although the region responsible for this event has not yet shown itself.
However, the proximity of this eruptive prominence to the east limb would
suggest that the region responsible should rotate into view over the next 24
hours.
Solar activity should continue low to possibly moderate. Region 6906 is
still capable of generating an isolated M-class flare, as may be the region
which is just beyond the east limb. The other regions presently visible are
not expected to generate anything more substantial than minor C-class flares.
The geomagnetic field was quiet to unsettled today. Conditions should
continue quiet to unsettled for the next 24 to 72 hours at least.
HF propagation conditions have been near normal over most regions.
Southern hemisphere regions are reporting higher than normal noise levels
with below normal propagation conditions. Conditions over most regions
(except perhaps some southern hemisphere regions) should be near normal and
possibly slightly above normal particularly over the low latitude regions
over the next several days at least.
** End of Daily Update **