[Ips-wgr] IPS Weekly Geo. Report (10 February 05)
rwc
rwc at ips.gov.au
Thu Feb 10 12:01:05 EST 2005
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 10 FEBRUARY 2005, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (01 FEBRUARY - 09 FEBRUARY)
K indices are in UT (0-24). For conversion to local time:
AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
Australian Region*
Date K-INDICES A
01 Feb 2122 2212 6
02 Feb 2222 2321 7
03 Feb 2343 1111 9
04 Feb 2112 2211 5
05 Feb 2111 2012 4
06 Feb 2231 1223 8
07 Feb 3233 4354 21
08 Feb 4433 4444 24
09 Feb 3333 4333 16
*estimated from real time data
The geomagnetic activity remained mostly at quiet
levels from 01 to 06 February with some unsettled
periods observed on 02 and 06 February, and some
active periods on 03 February. The activity rose
from quiet levels to minor storm levels on 07 February
when the earth entered the high speed coronal hole
wind stream. The effect of this coronal hole has been
showing a gradual decline since 08 February as the
geomagnetic activity remained at Quiet to Active
levels on 08 February and at Unsettled to Active
levels on 09 February.
2. FORECAST (10 FEBRUARY - 12 MARCH)
Disturbed Periods: 10 Feb, 14 Feb, 18 Feb, 25 to 27 Feb,
06 to 09 March.
Best Quiet Periods: 12 to 13 Feb, 20 to 24 Feb, 28 Feb to 05 March.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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